diff --git a/Button.cpp b/Button.cpp
index 7ff6a3e9..cddcee09 100644
--- a/Button.cpp
+++ b/Button.cpp
@@ -132,6 +132,7 @@ void TButton::Update() {
     if( pModelOn  != nullptr ) { pModelOn->iVisible  =   m_state; }
     if( pModelOff != nullptr ) { pModelOff->iVisible = (!m_state); }
 
+#ifdef _WIN32
     if (iFeedbackBit) {
         // jeżeli generuje informację zwrotną
         if (m_state) // zapalenie
@@ -139,6 +140,7 @@ void TButton::Update() {
         else
             Console::BitsClear(iFeedbackBit);
     }
+#endif
 };
 
 void TButton::AssignBool(bool const *bValue) {
diff --git a/Button.h b/Button.h
index 5ac94579..7eced4e4 100644
--- a/Button.h
+++ b/Button.h
@@ -19,10 +19,14 @@ public:
 // methods
     TButton() = default;
     void Clear(int const i = -1);
-    inline void FeedbackBitSet( int const i ) {
+    inline
+    void FeedbackBitSet( int const i ) {
         iFeedbackBit = 1 << i; };
     void Turn( bool const State );
     inline
+    bool GetValue() const {
+        return ( m_state ? 1 : 0 ); }
+    inline
     bool Active() {
         return ( ( pModelOn != nullptr )
               || ( pModelOff != nullptr ) ); }
diff --git a/Console.cpp b/Console.cpp
index 94712fa6..5dc0cd3e 100644
--- a/Console.cpp
+++ b/Console.cpp
@@ -12,7 +12,6 @@ http://mozilla.org/MPL/2.0/.
 #include "Globals.h"
 #include "LPT.h"
 #include "Logs.h"
-#include "MWD.h" // maciek001: obsluga portu COM
 #include "PoKeys55.h"
 #include "utilities.h"
 
@@ -54,31 +53,6 @@ Działanie jest następujące:
 
 /*******************************/
 
-/* //kod do przetrawienia:
-//aby się nie włączacz wygaszacz ekranu, co jakiś czas naciska się wirtualnie ScrollLock
-
-[DllImport("user32.dll")]
-static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, UIntPtr dwExtraInfo);
-
-private static void PressScrollLock()
-{//przyciska i zwalnia ScrollLock
- const byte vkScroll = 0x91;
- const byte keyeventfKeyup = 0x2;
- keybd_event(vkScroll, 0x45, 0, (UIntPtr)0);
- keybd_event(vkScroll, 0x45, keyeventfKeyup, (UIntPtr)0);
-};
-
-[DllImport("user32.dll")]
-private static extern bool SystemParametersInfo(int uAction,int uParam,int &lpvParam,int flags);
-
-public static Int32 GetScreenSaverTimeout()
-{
- Int32 value=0;
- SystemParametersInfo(14,0,&value,0);
- return value;
-};
-*/
-
 // static class member storage allocation
 TKeyTrans Console::ktTable[4 * 256];
 
@@ -99,7 +73,6 @@ int Console::iMode = 0;
 int Console::iConfig = 0;
 TPoKeys55 *Console::PoKeys55[2] = {NULL, NULL};
 TLPT *Console::LPT = NULL;
-TMWDComm *Console::MWDComm = NULL; // maciek001: obiekt dla MWD
 int Console::iSwitch[8]; // bistabilne w kabinie, załączane z [Shift], wyłączane bez
 int Console::iButton[8]; // monostabilne w kabinie, załączane podczas trzymania klawisza
 
@@ -111,14 +84,12 @@ Console::Console()
         iSwitch[i] = 0; // bity 0..127 - bez [Ctrl], 128..255 - z [Ctrl]
         iButton[i] = 0; // bity 0..127 - bez [Shift], 128..255 - z [Shift]
     }
-	MWDComm = NULL;
 };
 
 Console::~Console()
 {
     delete PoKeys55[0];
     delete PoKeys55[1];
-    delete MWDComm;
 };
 
 void Console::ModeSet(int m, int h)
@@ -166,18 +137,6 @@ int Console::On()
         break;
     }
 
-	if (Global.bMWDmasterEnable)
-	{
-		WriteLog("Opening ComPort");
-		MWDComm = new TMWDComm();
-		if (!(MWDComm->Open())) // jeżeli nie otwarł portu
-		{
-			WriteLog("ERROR: ComPort is NOT OPEN!");
-			delete MWDComm;
-			MWDComm = NULL;
-		}
-	}
-
     return 0;
 };
 
@@ -190,14 +149,9 @@ void Console::Off()
             SetLedState(VK_SCROLL, true); // przyciśnięty
             SetLedState(VK_SCROLL, false); // zwolniony
         }
-    delete PoKeys55[0];
-    PoKeys55[0] = NULL;
-    delete PoKeys55[1];
-    PoKeys55[1] = NULL;
-    delete LPT;
-    LPT = NULL;
-	delete MWDComm;
-	MWDComm = NULL;
+    SafeDelete( PoKeys55[0] );
+    SafeDelete( PoKeys55[1] );
+    SafeDelete( LPT );
 };
 
 void Console::BitsSet(int mask, int entry)
@@ -289,56 +243,6 @@ void Console::BitsUpdate(int mask)
         }
         break;
 	}
-	if (Global.bMWDmasterEnable)
-	{
-		// maciek001: MWDComm lampki i kontrolki
-		// out3: ogrzewanie sk?adu, opory rozruchowe, poslizg, zaluzjewent, -, -, czuwak, shp
-		// out4: stycz.liniowe, pezekaznikr??nicobwpomoc, nadmiarprzetw, roznicowy obw. g?, nadmiarsilniki, wylszybki, zanikpr?duprzyje?dzienaoporach, nadmiarsprezarki
-		// out5: HASLER */
-		if (mask & 0x0001) if (iBits & 1) {
-			MWDComm->WriteDataBuff[4] |= 1 << 7;  	// SHP	HASLER też
-			if (!MWDComm->bSHPstate) {
-				MWDComm->bSHPstate = true;
-				MWDComm->bPrzejazdSHP = true;
-			}
-			else MWDComm->bPrzejazdSHP = false;
-		}
-		else {
-			MWDComm->WriteDataBuff[4] &= ~(1 << 7);
-			MWDComm->bPrzejazdSHP = false;
-			MWDComm->bSHPstate = false;
-		}
-		if (mask & 0x0002) if (iBits & 2) MWDComm->WriteDataBuff[4] |= 1 << 6;  	// CA
-		else MWDComm->WriteDataBuff[4] &= ~(1 << 6);
-		if (mask & 0x0004) if (iBits & 4) MWDComm->WriteDataBuff[4] |= 1 << 1; 		// jazda na oporach rozruchowych
-		else MWDComm->WriteDataBuff[4] &= ~(1 << 1);
-		if (mask & 0x0008) if (iBits & 8)	MWDComm->WriteDataBuff[5] |= 1 << 5; 	// wyłącznik szybki
-		else MWDComm->WriteDataBuff[5] &= ~(1 << 5);
-		if (mask & 0x0010) if (iBits & 0x10) MWDComm->WriteDataBuff[5] |= 1 << 4; 	// nadmiarowy silników trakcyjnych
-		else MWDComm->WriteDataBuff[5] &= ~(1 << 4);
-		if (mask & 0x0020) if (iBits & 0x20) MWDComm->WriteDataBuff[5] |= 1 << 0; 	// styczniki liniowe
-		else MWDComm->WriteDataBuff[5] &= ~(1 << 0);
-		if (mask & 0x0040) if (iBits & 0x40) MWDComm->WriteDataBuff[4] |= 1 << 2; 	// poślizg
-		else MWDComm->WriteDataBuff[4] &= ~(1 << 2);
-		if (mask & 0x0080) if (iBits & 0x80) MWDComm->WriteDataBuff[5] |= 1 << 2; 	// (nadmiarowy) przetwornicy? ++
-		else MWDComm->WriteDataBuff[5] &= ~(1 << 2);
-		if (mask & 0x0100) if (iBits & 0x100) MWDComm->WriteDataBuff[5] |= 1 << 7; 	// nadmiarowy sprężarki
-		else MWDComm->WriteDataBuff[5] &= ~(1 << 7);
-		if (mask & 0x0200) if (iBits & 0x200) MWDComm->WriteDataBuff[2] |= 1 << 1; 	// wentylatory i opory
-		else MWDComm->WriteDataBuff[2] &= ~(1 << 1);
-		if (mask & 0x0400) if (iBits & 0x400) MWDComm->WriteDataBuff[2] |= 1 << 2; 	// wysoki rozruch
-		else MWDComm->WriteDataBuff[2] &= ~(1 << 2);
-		if (mask & 0x0800) if (iBits & 0x800) MWDComm->WriteDataBuff[4] |= 1 << 0;	// ogrzewanie pociągu
-		else MWDComm->WriteDataBuff[4] &= ~(1 << 0);
-		if (mask & 0x1000) if (iBits & 0x1000) MWDComm->bHamowanie = true;	// hasler: ciśnienie w hamulcach HASLER rysik 2
-		else MWDComm->bHamowanie = false;
-		if (mask & 0x2000) if (iBits & 0x2000) MWDComm->WriteDataBuff[6] |= 1 << 4; // hasler: prąd "na" silnikach - HASLER rysik 3
-		else MWDComm->WriteDataBuff[6] &= ~(1 << 4);
-		if (mask & 0x4000) if (iBits & 0x4000) MWDComm->WriteDataBuff[6] |= 1 << 7; // brzęczyk SHP/CA
-		else MWDComm->WriteDataBuff[6] &= ~(1 << 7);
-		//if(mask & 0x8000) if(iBits & 0x8000) MWDComm->WriteDataBuff[1] |= 1<<7; (puste)
-		//else MWDComm->WriteDataBuff[0] &= ~(1<<7);
-	}
 };
 
 bool Console::Pressed(int x)
@@ -351,85 +255,39 @@ bool Console::Pressed(int x)
 
 void Console::ValueSet(int x, double y)
 { // ustawienie wartości (y) na kanale analogowym (x)
-    if (iMode == 4)
-        if (PoKeys55[0])
-        {
-            x = Global.iPoKeysPWM[x];
-            if (Global.iCalibrateOutDebugInfo == x)
-                WriteLog("CalibrateOutDebugInfo: oryginal=" + std::to_string(y));
-            if (Global.fCalibrateOutMax[x] > 0)
-            {
-                y = clamp( y, 0.0, Global.fCalibrateOutMax[x]);
-                if (Global.iCalibrateOutDebugInfo == x)
-                    WriteLog(" cutted=" + std::to_string(y));
-                y = y / Global.fCalibrateOutMax[x]; // sprowadzenie do <0,1> jeśli podana
-                                                     // maksymalna wartość
-                if (Global.iCalibrateOutDebugInfo == x)
-                    WriteLog(" fraction=" + std::to_string(y));
-            }
-            double temp = (((((Global.fCalibrateOut[x][5] * y) + Global.fCalibrateOut[x][4]) * y +
-                             Global.fCalibrateOut[x][3]) *
-                                y +
-                            Global.fCalibrateOut[x][2]) *
-                               y +
-                           Global.fCalibrateOut[x][1]) *
-                              y +
-                          Global.fCalibrateOut[x][0]; // zakres <0;1>
-            if (Global.iCalibrateOutDebugInfo == x)
-                WriteLog(" calibrated=" + std::to_string(temp));
-            PoKeys55[0]->PWM(x, temp);
+    if( iMode != 4 )  { return; }
+
+    if (PoKeys55[0])
+    {
+        x = Global.iPoKeysPWM[x];
+        if( Global.iCalibrateOutDebugInfo == x ) {
+            WriteLog( "CalibrateOutDebugInfo: oryginal=" + std::to_string( y ) );
         }
-	if (Global.bMWDmasterEnable)
-	{
-		unsigned int iliczba;
-		switch (x)
-		{
-		case 0: iliczba = (unsigned int)floor((y / (Global.fMWDzg[0] * 10) * Global.fMWDzg[1]) + 0.5); // zbiornik główny
-			MWDComm->WriteDataBuff[12] = (unsigned char)(iliczba >> 8);
-			MWDComm->WriteDataBuff[11] = (unsigned char)iliczba;
-			if (Global.bMWDmasterEnable && Global.iMWDDebugMode & 8) WriteLog("Main tank press " + to_string(MWDComm->WriteDataBuff[12]) + " " + to_string(MWDComm->WriteDataBuff[11]));
-			break;
-		case 1: iliczba = (unsigned int)floor((y / (Global.fMWDpg[0] * 10) * Global.fMWDpg[1]) + 0.5); // przewód główny
-			MWDComm->WriteDataBuff[10] = (unsigned char)(iliczba >> 8);
-			MWDComm->WriteDataBuff[9] = (unsigned char)iliczba;
-			if (Global.bMWDmasterEnable && Global.iMWDDebugMode & 8) WriteLog("Main pipe press " + to_string(MWDComm->WriteDataBuff[10]) + " " + to_string(MWDComm->WriteDataBuff[9]));
-			break;
-		case 2: iliczba = (unsigned int)floor((y / (Global.fMWDph[0] * 10) * Global.fMWDph[1]) + 0.5); // cylinder hamulcowy
-			MWDComm->WriteDataBuff[8] = (unsigned char)(iliczba >> 8);
-			MWDComm->WriteDataBuff[7] = (unsigned char)iliczba;
-			if (Global.bMWDmasterEnable && Global.iMWDDebugMode & 8) WriteLog("Break press " + to_string(MWDComm->WriteDataBuff[8]) + " " + to_string(MWDComm->WriteDataBuff[7]));
-			break;
-		case 3: iliczba = (unsigned int)floor((y / Global.fMWDvolt[0] * Global.fMWDvolt[1]) + 0.5); // woltomierz WN
-			MWDComm->WriteDataBuff[14] = (unsigned char)(iliczba >> 8);
-			MWDComm->WriteDataBuff[13] = (unsigned char)iliczba;
-			if (Global.bMWDmasterEnable && Global.iMWDDebugMode & 8) WriteLog("Hi Volt meter " + to_string(MWDComm->WriteDataBuff[14]) + " " + to_string(MWDComm->WriteDataBuff[13]));
-			break;
-		case 4: iliczba = (unsigned int)floor((y / Global.fMWDamp[0] * Global.fMWDamp[1]) + 0.5);	// amp WN 1
-			MWDComm->WriteDataBuff[16] = (unsigned char)(iliczba >> 8);
-			MWDComm->WriteDataBuff[15] = (unsigned char)iliczba;
-			if (Global.bMWDmasterEnable && Global.iMWDDebugMode & 8) WriteLog("Apm meter1 " + to_string(MWDComm->WriteDataBuff[16]) + " " + to_string(MWDComm->WriteDataBuff[15]));
-			break;
-		case 5: iliczba = (unsigned int)floor((y / Global.fMWDamp[0] * Global.fMWDamp[1]) + 0.5);	// amp WN 2
-			MWDComm->WriteDataBuff[18] = (unsigned char)(iliczba >> 8);
-			MWDComm->WriteDataBuff[17] = (unsigned char)iliczba;
-			if (Global.bMWDmasterEnable && Global.iMWDDebugMode & 8) WriteLog("Apm meter2 " + to_string(MWDComm->WriteDataBuff[18]) + " " + to_string(MWDComm->WriteDataBuff[17]));
-			break;
-		case 6: iliczba = (unsigned int)floor((y / Global.fMWDamp[0] * Global.fMWDamp[1]) + 0.5);	// amp WN 3
-			MWDComm->WriteDataBuff[20] = (unsigned int)(iliczba >> 8);
-			MWDComm->WriteDataBuff[19] = (unsigned char)iliczba;
-			if (Global.bMWDmasterEnable && Global.iMWDDebugMode & 8) WriteLog("Apm meter3 " + to_string(MWDComm->WriteDataBuff[20]) + " " + to_string(MWDComm->WriteDataBuff[19]));
-			break;
-		case 7: if (Global.iPause) MWDComm->WriteDataBuff[0] = 0; //skoro pauza to hasler stoi i nie nabija kilometrów CHYBA NIE DZIAŁA!
-				else MWDComm->WriteDataBuff[0] = (unsigned char)floor(y); 	// prędkość dla np haslera
-				if (Global.bMWDmasterEnable && Global.iMWDDebugMode & 8) WriteLog("Speed: " + to_string(MWDComm->WriteDataBuff[0]));
-			break;
-		case 8: iliczba = (unsigned int)floor((y / Global.fMWDlowVolt[0] * Global.fMWDlowVolt[1]) + 0.5);	// volt NN
-			MWDComm->WriteDataBuff[22] = (unsigned int)(iliczba >> 8);
-			MWDComm->WriteDataBuff[21] = (unsigned char)iliczba;
-			if (Global.bMWDmasterEnable && Global.iMWDDebugMode & 8) WriteLog("Low Volt meter " + to_string(MWDComm->WriteDataBuff[22]) + " " + to_string(MWDComm->WriteDataBuff[21]));
-			break; // przygotowane do wdrożenia, jeszcze nie wywoływane
-		}
-	}
+        if (Global.fCalibrateOutMax[x] > 0)
+        {
+            y = clamp( y, 0.0, Global.fCalibrateOutMax[x]);
+            if( Global.iCalibrateOutDebugInfo == x ) {
+                WriteLog( " cutted=" + std::to_string( y ) );
+            }
+            // sprowadzenie do <0,1> jeśli podana maksymalna wartość
+            y = y / Global.fCalibrateOutMax[x];
+            if( Global.iCalibrateOutDebugInfo == x ) {
+                WriteLog( " fraction=" + std::to_string( y ) );
+            }
+        }
+        double temp = (((((Global.fCalibrateOut[x][5] * y) + Global.fCalibrateOut[x][4]) * y +
+                            Global.fCalibrateOut[x][3]) *
+                            y +
+                        Global.fCalibrateOut[x][2]) *
+                            y +
+                        Global.fCalibrateOut[x][1]) *
+                            y +
+                        Global.fCalibrateOut[x][0]; // zakres <0;1>
+        if( Global.iCalibrateOutDebugInfo == x ) {
+            WriteLog( " calibrated=" + std::to_string( temp ) );
+        }
+        PoKeys55[0]->PWM(x, temp);
+    }
 };
 
 void Console::Update()
@@ -447,11 +305,6 @@ void Console::Update()
                 Global.iPause |= 8; // tak???
                 PoKeys55[0]->Connect(); // próba ponownego podłączenia
             }
-	if (Global.bMWDmasterEnable)
-	{
-		if (MWDComm->GetMWDState()) MWDComm->Run();
-		else MWDComm->Close();
-	}
 };
 
 float Console::AnalogGet(int x)
@@ -476,11 +329,6 @@ float Console::AnalogCalibrateGet(int x)
 		if (x == 1) return b/10;
 		else return b;
 	}
-	if (Global.bMWDmasterEnable && Global.bMWDBreakEnable)
-	{
-		float b = (float)MWDComm->uiAnalog[x];
-		return (b - Global.fMWDAnalogInCalib[x][0]) / (Global.fMWDAnalogInCalib[x][1] - Global.fMWDAnalogInCalib[x][0]);
-	}
     return -1.0; // odcięcie
 };
 
@@ -515,6 +363,7 @@ void Console::OnKeyDown(int k)
         }
     }
 };
+
 void Console::OnKeyUp(int k)
 { // puszczenie klawisza w zasadzie nie ma znaczenia dla iSwitch, ale zeruje iButton
     if ((k & 0x20000) == 0) // monostabilne tylko bez [Ctrl]
@@ -523,10 +372,12 @@ void Console::OnKeyUp(int k)
         else
             iButton[char(k) >> 5] &= ~(1 << (k & 31)); // wyłącz monostabilny podstawowy
 };
+
 int Console::KeyDownConvert(int k)
 {
     return int(ktTable[k & 0x3FF].iDown);
 };
+
 int Console::KeyUpConvert(int k)
 {
     return int(ktTable[k & 0x3FF].iUp);
diff --git a/Console.h b/Console.h
index aedaff1f..fd9f6631 100644
--- a/Console.h
+++ b/Console.h
@@ -13,7 +13,6 @@ http://mozilla.org/MPL/2.0/.
 class TConsoleDevice; // urządzenie podłączalne za pomocą DLL
 class TPoKeys55;
 class TLPT;
-class TMWDComm;        // maciek001: dodana obsluga portu COM
 
 // klasy konwersji znaków wprowadzanych z klawiatury
 class TKeyTrans
@@ -32,7 +31,6 @@ class Console
     static int iBits; // podstawowy zestaw lampek
     static TPoKeys55 *PoKeys55[2]; // może ich być kilka
     static TLPT *LPT;
-    static TMWDComm *MWDComm; // maciek001: na potrzeby MWD
     static void BitsUpdate(int mask);
     // zmienne dla trybu "jednokabinowego", potrzebne do współpracy z pulpitem (PoKeys)
     // używając klawiatury, każdy pojazd powinien mieć własny stan przełączników
diff --git a/EU07.cpp b/EU07.cpp
index 966256bc..ab3af211 100644
--- a/EU07.cpp
+++ b/EU07.cpp
@@ -32,6 +32,7 @@ Stele, firleju, szociu, hunter, ZiomalCl, OLI_EU and others
 #include "mouseinput.h"
 #include "gamepadinput.h"
 #include "Console.h"
+#include "uart.h"
 #include "PyInt.h"
 
 #ifdef EU07_BUILD_STATIC
@@ -50,6 +51,7 @@ Stele, firleju, szociu, hunter, ZiomalCl, OLI_EU and others
 #pragma comment( lib, "openal32.lib")
 #pragma comment( lib, "setupapi.lib" )
 #pragma comment( lib, "python27.lib" )
+#pragma comment( lib, "libserialport-0.lib" )
 #pragma comment (lib, "dbghelp.lib")
 #pragma comment (lib, "version.lib")
 #ifdef CAN_I_HAS_LIBPNG
@@ -68,6 +70,7 @@ keyboard_input Keyboard;
 mouse_input Mouse;
 gamepad_input Gamepad;
 glm::dvec2 mouse_pickmodepos;  // stores last mouse position in control picking mode
+std::unique_ptr<uart_input> uart;
 
 }
 
@@ -411,6 +414,9 @@ int main(int argc, char *argv[])
     input::Keyboard.init();
     input::Mouse.init();
     input::Gamepad.init();
+    if( true == Global.uart_conf.enable ) {
+        input::uart = std::make_unique<uart_input>();
+    }
 
     Global.pWorld = &World; // Ra: wskaźnik potrzebny do usuwania pojazdów
     try {
@@ -443,6 +449,7 @@ int main(int argc, char *argv[])
             input::Keyboard.poll();
             if( true == Global.InputMouse )   { input::Mouse.poll(); }
             if( true == Global.InputGamepad ) { input::Gamepad.poll(); }
+            if( input::uart != nullptr )      { input::uart->poll(); }
         }
     }
     catch( std::bad_alloc const &Error ) {
diff --git a/Globals.cpp b/Globals.cpp
index e40eb860..62c33e69 100644
--- a/Globals.cpp
+++ b/Globals.cpp
@@ -579,102 +579,44 @@ global_settings::ConfigParse(cParser &Parser) {
             Parser.getTokens();
             Parser >> InputGamepad;
         }
-        // maciek001: ustawienia MWD
-		else if (token == "mwdmasterenable") {         // główne włączenie maszyny!
-			Parser.getTokens();
-			Parser >> bMWDmasterEnable;
-			if (bMWDdebugEnable) WriteLog("SerialPort Master Enable");
-		}
-		else if (token == "mwddebugenable") {         // logowanie pracy
-			Parser.getTokens();
-			Parser >> bMWDdebugEnable;
-			if (bMWDdebugEnable) WriteLog("MWD Debug Mode On");
-		}
-		else if (token == "mwddebugmode") {           // co ma być debugowane?
-			Parser.getTokens(1, false);
-			Parser >> iMWDDebugMode;
-			if (bMWDdebugEnable) WriteLog("Debug Mode = " + to_string(iMWDDebugMode));
-		}
-		else if (token == "mwdcomportname") {         // nazwa portu COM
-			Parser.getTokens();
-			Parser >> sMWDPortId;
-			if (bMWDdebugEnable) WriteLog("PortName " + sMWDPortId);
-		}
-		else if (token == "mwdbaudrate") {            // prędkość transmisji danych
-			Parser.getTokens(1, false);
-			Parser >> iMWDBaudrate;
-			if (bMWDdebugEnable) WriteLog("Baud rate = " + to_string((int)(iMWDBaudrate / 1000)) + (" kbps"));
-		}
-		else if (token == "mwdinputenable") {         // włącz wejścia
-			Parser.getTokens();
-			Parser >> bMWDInputEnable;
-			if (bMWDdebugEnable && bMWDInputEnable) WriteLog("MWD Input Enable");
-		}
-		else if (token == "mwdbreakenable") {         // włącz obsługę hamulców
-			Parser.getTokens();
-			Parser >> bMWDBreakEnable;
-			if (bMWDdebugEnable && bMWDBreakEnable) WriteLog("MWD Break Enable");
-		}
-		else if (token == "mwdmainbreakconfig") {      // ustawienia hamulca zespolonego
-			Parser.getTokens(2, false);
-			Parser >> fMWDAnalogInCalib[0][0] >> fMWDAnalogInCalib[0][1];
-			if (bMWDdebugEnable) WriteLog("Main break settings: " + to_string(fMWDAnalogInCalib[0][0]) + (" ") + to_string(fMWDAnalogInCalib[0][1]));
-		}
-		else if (token == "mwdlocbreakconfig") {	// ustawienia hamulca lokomotywy
-			Parser.getTokens(2, false);
-			Parser >> fMWDAnalogInCalib[1][0] >> fMWDAnalogInCalib[1][1];
-			if (bMWDdebugEnable) WriteLog("Locomotive break settings: " + to_string(fMWDAnalogInCalib[1][0]) + (" ") + to_string(fMWDAnalogInCalib[1][1]));
-		}
-		else if (token == "mwdanalogin1config") {      // ustawienia hamulca zespolonego
-			Parser.getTokens(2, false);
-			Parser >> fMWDAnalogInCalib[2][0] >> fMWDAnalogInCalib[2][1];
-			if (bMWDdebugEnable) WriteLog("Analog input 1 settings: " + to_string(fMWDAnalogInCalib[2][0]) + (" ") + to_string(fMWDAnalogInCalib[2][1]));
-		}
-		else if (token == "mwdanalogin2config") {	// ustawienia hamulca lokomotywy
-			Parser.getTokens(2, false);
-			Parser >> fMWDAnalogInCalib[3][0] >> fMWDAnalogInCalib[3][1];
-			if (bMWDdebugEnable) WriteLog("Analog input 2 settings: " + to_string(fMWDAnalogInCalib[3][0]) + (" ") + to_string(fMWDAnalogInCalib[3][1]));
-		}
-		else if (token == "mwdmaintankpress") {        // max ciśnienie w zbiorniku głownym i rozdzielczość
-			Parser.getTokens(2, false);
-			Parser >> fMWDzg[0] >> fMWDzg[1];
-			if (bMWDdebugEnable) WriteLog("MainAirTank settings: " + to_string(fMWDzg[0]) + (" ") + to_string(fMWDzg[1]));
-		}
-		else if (token == "mwdmainpipepress") {        // max ciśnienie w przewodzie głownym i rozdzielczość
-			Parser.getTokens(2, false);
-			Parser >> fMWDpg[0] >> fMWDpg[1];
-			if (bMWDdebugEnable) WriteLog("MainAirPipe settings: " + to_string(fMWDpg[0]) + (" ") + to_string(fMWDpg[1]));
-		}
-		else if (token == "mwdbreakpress") {           // max ciśnienie w hamulcach i rozdzielczość
-			Parser.getTokens(2, false);
-			Parser >> fMWDph[0] >> fMWDph[1];
-			if (bMWDdebugEnable) WriteLog("AirPipe settings: " + to_string(fMWDph[0]) + (" ") + to_string(fMWDph[1]));
-		}
-		else if (token == "mwdhivoltmeter") {          // max napięcie na woltomierzu WN
-			Parser.getTokens(2, false);
-			Parser >> fMWDvolt[0] >> fMWDvolt[1];
-			if (bMWDdebugEnable) WriteLog("VoltMeter settings: " + to_string(fMWDvolt[0]) + (" ") + to_string(fMWDvolt[1]));
-		}
-		else if (token == "mwdhiampmeter") {
-			Parser.getTokens(2, false);
-			Parser >> fMWDamp[0] >> fMWDamp[1];
-			if (bMWDdebugEnable) WriteLog("Amp settings: " + to_string(fMWDamp[0]) + (" ") + to_string(fMWDamp[1]));
-		}
-		else if (token == "mwdlowvoltmeter") {
-			Parser.getTokens(2, false);
-			Parser >> fMWDlowVolt[0] >> fMWDlowVolt[1];
-			if (bMWDdebugEnable) WriteLog("Low VoltMeter settings: " + to_string(fMWDlowVolt[0]) + (" ") + to_string(fMWDlowVolt[1]));
-		}
-		else if (token == "mwddivider") {
-			Parser.getTokens(1, false);
-			Parser >> iMWDdivider;
-			if (iMWDdivider == 0)
-			{
-				WriteLog("Dzielnik nie może być równy ZERO! Ustawiam na 1!");
-				iMWDdivider = 1;
-			}
-			if (bMWDdebugEnable) WriteLog("Divider = " + to_string(iMWDdivider));
-		}
+        else if( token == "uart" ) {
+            uart_conf.enable = true;
+            Parser.getTokens( 3, false );
+            Parser
+                >> uart_conf.port
+                >> uart_conf.baud
+                >> uart_conf.updatetime;
+        }
+        else if( token == "uarttune" ) {
+            Parser.getTokens( 14 );
+            Parser
+                >> uart_conf.mainbrakemin
+                >> uart_conf.mainbrakemax
+                >> uart_conf.localbrakemin
+                >> uart_conf.localbrakemax
+                >> uart_conf.tankmax
+                >> uart_conf.tankuart
+                >> uart_conf.pipemax
+                >> uart_conf.pipeuart
+                >> uart_conf.brakemax
+                >> uart_conf.brakeuart
+                >> uart_conf.hvmax
+                >> uart_conf.hvuart
+                >> uart_conf.currentmax
+                >> uart_conf.currentuart;
+        }
+        else if( token == "uartfeature" ) {
+            Parser.getTokens( 4 );
+            Parser
+                >> uart_conf.mainenable
+                >> uart_conf.scndenable
+                >> uart_conf.trainenable
+                >> uart_conf.localenable;
+        }
+        else if( token == "uartdebug" ) {
+            Parser.getTokens( 1 );
+            Parser >> uart_conf.debug;
+        }
     } while ((token != "") && (token != "endconfig")); //(!Parser->EndOfFile)
     // na koniec trochę zależności
     if (!bLoadTraction) // wczytywanie drutów i słupów
diff --git a/Globals.h b/Globals.h
index 19ecd7b3..59a8a487 100644
--- a/Globals.h
+++ b/Globals.h
@@ -13,6 +13,7 @@ http://mozilla.org/MPL/2.0/.
 #include "dumb3d.h"
 #include "float3d.h"
 #include "light.h"
+#include "uart.h"
 #include "utilities.h"
 
 struct global_settings {
@@ -60,8 +61,6 @@ struct global_settings {
     int iWriteLogEnabled{ 3 }; // maska bitowa: 1-zapis do pliku, 2-okienko, 4-nazwy torów
     bool MultipleLogs{ false };
     unsigned int DisabledLogTypes{ 0 };
-    bool bMWDdebugEnable{ false }; // włącz dodawanie do logu
-    int iMWDDebugMode{ 0 }; // co ma wyświetlać w logu
     // simulation
     bool RealisticControlMode{ false }; // controls ability to steer the vehicle from outside views
     bool bFreeFly{ false };
@@ -159,25 +158,7 @@ struct global_settings {
         0, 0, 0, 0, 0, 0, 0 };
     int iCalibrateOutDebugInfo { -1 }; // numer wyjścia kalibrowanego dla którego wyświetlać informacje podczas kalibracji
     int iPoKeysPWM[ 7 ] = { 0, 1, 2, 3, 4, 5, 6 }; // numery wejść dla PWM
-    // maciek001: konfiguracja wstępna portu COM
-    bool bMWDmasterEnable { false };// główne włączenie portu!
-    std::string sMWDPortId { "COM1" }; // nazwa portu z którego korzystamy
-    unsigned long int iMWDBaudrate{ 9600 }; // prędkość transmisji danych
-    bool bMWDInputEnable { false }; // włącz wejścia
-    bool bMWDBreakEnable { false }; // włącz wejścia analogowe
-    // wartość max potencjometru, wartość min potencjometru, rozdzielczość (max. wartość jaka może być)
-    double fMWDAnalogInCalib[ 4 ][ 2 ] = {
-        { 0, 1023 },
-        { 0, 1023 },
-        { 0, 1023 },
-        { 0, 1023 } };
-    double fMWDzg[ 2 ] = { 0.9, 1023 };
-    double fMWDpg[ 2 ] = { 0.8, 1023 };
-    double fMWDph[ 2 ] = { 0.6, 1023 };
-    double fMWDvolt[ 2 ] = { 4000, 1023 };
-    double fMWDamp[ 2 ] = { 800, 1023 };
-    double fMWDlowVolt[ 2 ] = { 150, 1023 };
-    int iMWDdivider { 5 };
+    uart_input::conf_t uart_conf;
     // multiplayer
     int iMultiplayer{ 0 }; // blokada działania niektórych eventów na rzecz kominikacji
     // other
diff --git a/Train.cpp b/Train.cpp
index a121654d..100df383 100644
--- a/Train.cpp
+++ b/Train.cpp
@@ -159,19 +159,23 @@ TTrain::commandhandler_map const TTrain::m_commandhandlers = {
     { user_command::mastercontrollerincreasefast, &TTrain::OnCommand_mastercontrollerincreasefast },
     { user_command::mastercontrollerdecrease, &TTrain::OnCommand_mastercontrollerdecrease },
     { user_command::mastercontrollerdecreasefast, &TTrain::OnCommand_mastercontrollerdecreasefast },
+    { user_command::mastercontrollerset, &TTrain::OnCommand_mastercontrollerset },
     { user_command::secondcontrollerincrease, &TTrain::OnCommand_secondcontrollerincrease },
     { user_command::secondcontrollerincreasefast, &TTrain::OnCommand_secondcontrollerincreasefast },
     { user_command::secondcontrollerdecrease, &TTrain::OnCommand_secondcontrollerdecrease },
     { user_command::secondcontrollerdecreasefast, &TTrain::OnCommand_secondcontrollerdecreasefast },
+    { user_command::secondcontrollerset, &TTrain::OnCommand_secondcontrollerset },
     { user_command::notchingrelaytoggle, &TTrain::OnCommand_notchingrelaytoggle },
     { user_command::mucurrentindicatorothersourceactivate, &TTrain::OnCommand_mucurrentindicatorothersourceactivate },
     { user_command::independentbrakeincrease, &TTrain::OnCommand_independentbrakeincrease },
     { user_command::independentbrakeincreasefast, &TTrain::OnCommand_independentbrakeincreasefast },
     { user_command::independentbrakedecrease, &TTrain::OnCommand_independentbrakedecrease },
     { user_command::independentbrakedecreasefast, &TTrain::OnCommand_independentbrakedecreasefast },
+    { user_command::independentbrakeset, &TTrain::OnCommand_independentbrakeset },
     { user_command::independentbrakebailoff, &TTrain::OnCommand_independentbrakebailoff },
     { user_command::trainbrakeincrease, &TTrain::OnCommand_trainbrakeincrease },
     { user_command::trainbrakedecrease, &TTrain::OnCommand_trainbrakedecrease },
+    { user_command::trainbrakeset, &TTrain::OnCommand_trainbrakeset },
     { user_command::trainbrakecharging, &TTrain::OnCommand_trainbrakecharging },
     { user_command::trainbrakerelease, &TTrain::OnCommand_trainbrakerelease },
     { user_command::trainbrakefirstservice, &TTrain::OnCommand_trainbrakefirstservice },
@@ -437,9 +441,9 @@ PyObject *TTrain::GetTrainState() {
     PyDict_SetItemString( dict, "fuse", PyGetBool( mover->FuseFlag ) );
 	PyDict_SetItemString( dict, "epfuse", PyGetBool( mover->EpFuse ));
     // induction motor state data
-    char* TXTT[ 10 ] = { "fd", "fdt", "fdb", "pd", "pdt", "pdb", "itothv", "1", "2", "3" };
-    char* TXTC[ 10 ] = { "fr", "frt", "frb", "pr", "prt", "prb", "im", "vm", "ihv", "uhv" };
-    char* TXTP[ 3 ] = { "bc", "bp", "sp" };
+    char const *TXTT[ 10 ] = { "fd", "fdt", "fdb", "pd", "pdt", "pdb", "itothv", "1", "2", "3" };
+    char const *TXTC[ 10 ] = { "fr", "frt", "frb", "pr", "prt", "prb", "im", "vm", "ihv", "uhv" };
+    char const *TXTP[ 3 ] = { "bc", "bp", "sp" };
     for( int j = 0; j < 10; ++j )
         PyDict_SetItemString( dict, ( std::string( "eimp_t_" ) + std::string( TXTT[ j ] ) ).c_str(), PyGetFloatS( fEIMParams[ 0 ][ j ] ) );
     for( int i = 0; i < 8; ++i ) {
@@ -496,6 +500,35 @@ PyObject *TTrain::GetTrainState() {
     return dict;
 }
 
+TTrain::state_t
+TTrain::get_state() const {
+
+    return {
+        btLampkaSHP.GetValue(),
+        btLampkaCzuwaka.GetValue(),
+        btLampkaOpory.GetValue(),
+        btLampkaWylSzybki.GetValue(),
+        btLampkaNadmSil.GetValue(),
+        btLampkaStyczn.GetValue(),
+        btLampkaPoslizg.GetValue(),
+        btLampkaNadmPrzetw.GetValue(),
+        btLampkaPrzetwOff.GetValue(),
+        btLampkaNadmSpr.GetValue(),
+        btLampkaNadmWent.GetValue(),
+        btLampkaWysRozr.GetValue(),
+        btLampkaOgrzewanieSkladu.GetValue(),
+        btHaslerBrakes.GetValue(),
+        btHaslerCurrent.GetValue(),
+        ( TestFlag( mvOccupied->SecuritySystem.Status, s_CAalarm ) || TestFlag( mvOccupied->SecuritySystem.Status, s_SHPalarm ) ),
+        fTachoVelocity,
+        static_cast<float>( mvOccupied->Compressor ),
+        static_cast<float>( mvOccupied->PipePress ),
+        static_cast<float>( mvOccupied->BrakePress ),
+        fHVoltage,
+        { fHCurrent[ ( mvControlled->TrainType & dt_EZT ) ? 0 : 1 ], fHCurrent[ 2 ], fHCurrent[ 3 ] }
+    };
+}
+
 bool TTrain::is_eztoer() const {
 
     return
@@ -596,6 +629,17 @@ void TTrain::OnCommand_mastercontrollerdecreasefast( TTrain *Train, command_data
     }
 }
 
+void TTrain::OnCommand_mastercontrollerset( TTrain *Train, command_data const &Command ) {
+
+    auto const targetposition { std::min<int>( Command.param1, Train->mvControlled->MainCtrlPosNo ) };
+    while( targetposition < Train->mvControlled->MainCtrlPos ) {
+        Train->mvControlled->DecMainCtrl( 1 );
+    }
+    while( targetposition > Train->mvControlled->MainCtrlPos ) {
+        Train->mvControlled->IncMainCtrl( 1 );
+    }
+}
+
 void TTrain::OnCommand_secondcontrollerincrease( TTrain *Train, command_data const &Command ) {
 
     if( Command.action != GLFW_RELEASE ) {
@@ -678,6 +722,17 @@ void TTrain::OnCommand_secondcontrollerdecreasefast( TTrain *Train, command_data
     }
 }
 
+void TTrain::OnCommand_secondcontrollerset( TTrain *Train, command_data const &Command ) {
+
+    auto const targetposition { std::min<int>( Command.param1, Train->mvControlled->ScndCtrlPosNo ) };
+    while( targetposition < Train->mvControlled->ScndCtrlPos ) {
+        Train->mvControlled->DecScndCtrl( 1 );
+    }
+    while( targetposition > Train->mvControlled->ScndCtrlPos ) {
+        Train->mvControlled->IncScndCtrl( 1 );
+    }
+}
+
 void TTrain::OnCommand_independentbrakeincrease( TTrain *Train, command_data const &Command ) {
 
     if( Command.action != GLFW_RELEASE ) {
@@ -724,6 +779,18 @@ void TTrain::OnCommand_independentbrakedecreasefast( TTrain *Train, command_data
     }
 }
 
+void TTrain::OnCommand_independentbrakeset( TTrain *Train, command_data const &Command ) {
+    
+    Train->mvControlled->LocalBrakePos = (
+        std::round(
+            interpolate<double>(
+                0.0,
+                LocalBrakePosNo,
+                clamp(
+                    reinterpret_cast<double const &>( Command.param1 ),
+                    0.0, 1.0 ) ) ) );
+}
+
 void TTrain::OnCommand_independentbrakebailoff( TTrain *Train, command_data const &Command ) {
 
     if( false == FreeFlyModeFlag ) {
@@ -801,6 +868,17 @@ void TTrain::OnCommand_trainbrakedecrease( TTrain *Train, command_data const &Co
     }
 }
 
+void TTrain::OnCommand_trainbrakeset( TTrain *Train, command_data const &Command ) {
+
+    Train->mvControlled->BrakeLevelSet(
+        interpolate(
+            Train->mvControlled->Handle->GetPos( bh_MIN ),
+            Train->mvControlled->Handle->GetPos( bh_MAX ),
+            clamp(
+                reinterpret_cast<double const &>( Command.param1 ),
+                0.0, 1.0 ) ) );
+}
+
 void TTrain::OnCommand_trainbrakecharging( TTrain *Train, command_data const &Command ) {
 
     if( Command.action != GLFW_RELEASE ) {
@@ -1293,6 +1371,8 @@ void TTrain::OnCommand_batterytoggle( TTrain *Train, command_data const &Command
         // only reacting to press, so the switch doesn't flip back and forth if key is held down
         if( false == Train->mvOccupied->Battery ) {
             // turn on
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             // wyłącznik jest też w SN61, ewentualnie załączać prąd na stałe z poziomu FIZ
             if( Train->mvOccupied->BatterySwitch( true ) ) {
                 // bateria potrzebna np. do zapalenia świateł
@@ -1312,6 +1392,8 @@ void TTrain::OnCommand_batterytoggle( TTrain *Train, command_data const &Command
         }
         else {
             //turn off
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             if( Train->mvOccupied->BatterySwitch( false ) ) {
                 // ewentualnie zablokować z FIZ, np. w samochodach się nie odłącza akumulatora
                 if( Train->ggBatteryButton.SubModel ) {
@@ -1334,6 +1416,8 @@ void TTrain::OnCommand_pantographtogglefront( TTrain *Train, command_data const
         // only reacting to press, so the switch doesn't flip back and forth if key is held down
         if( false == Train->mvControlled->PantFrontUp ) {
             // turn on...
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             Train->mvControlled->PantFrontSP = false;
             if( Train->mvControlled->PantFront( true ) ) {
                 if( Train->mvControlled->PantFrontStart != 1 ) {
@@ -1356,6 +1440,8 @@ void TTrain::OnCommand_pantographtogglefront( TTrain *Train, command_data const
         }
         else {
             // ...or turn off
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             if( Train->mvOccupied->PantSwitchType == "impulse" ) {
                 if( ( Train->ggPantFrontButtonOff.SubModel == nullptr )
                  && ( Train->ggPantSelectedDownButton.SubModel == nullptr ) ) {
@@ -1414,6 +1500,8 @@ void TTrain::OnCommand_pantographtogglerear( TTrain *Train, command_data const &
         // only reacting to press, so the switch doesn't flip back and forth if key is held down
         if( false == Train->mvControlled->PantRearUp ) {
             // turn on...
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             Train->mvControlled->PantRearSP = false;
             if( Train->mvControlled->PantRear( true ) ) {
                 if( Train->mvControlled->PantRearStart != 1 ) {
@@ -1436,6 +1524,8 @@ void TTrain::OnCommand_pantographtogglerear( TTrain *Train, command_data const &
         }
         else {
             // ...or turn off
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             if( Train->mvOccupied->PantSwitchType == "impulse" ) {
                 if( ( Train->ggPantRearButtonOff.SubModel == nullptr )
                  && ( Train->ggPantSelectedDownButton.SubModel == nullptr ) ) {
@@ -1603,6 +1693,8 @@ void TTrain::OnCommand_linebreakertoggle( TTrain *Train, command_data const &Com
         // press or hold...
         if( Train->m_linebreakerstate == 0 ) {
             // ...to close the circuit
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             if( Command.action == GLFW_PRESS ) {
                 // fresh press, start fresh closing delay calculation
                 Train->fMainRelayTimer = 0.0f;
@@ -1649,6 +1741,8 @@ void TTrain::OnCommand_linebreakertoggle( TTrain *Train, command_data const &Com
         }
         else if( Train->m_linebreakerstate == 1 ) {
             // ...to open the circuit
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             if( true == Train->mvControlled->MainSwitch( false ) ) {
 
                 Train->m_linebreakerstate = -1;
@@ -1755,6 +1849,8 @@ void TTrain::OnCommand_convertertoggle( TTrain *Train, command_data const &Comma
         if( ( false == Train->mvControlled->ConverterAllow )
          && ( Train->ggConverterButton.GetValue() < 0.5 ) ) {
             // turn on
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             // visual feedback
             Train->ggConverterButton.UpdateValue( 1.0, Train->dsbSwitch );
 /*
@@ -1782,6 +1878,8 @@ void TTrain::OnCommand_convertertoggle( TTrain *Train, command_data const &Comma
         }
         else {
             //turn off
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             // visual feedback
             Train->ggConverterButton.UpdateValue( 0.0, Train->dsbSwitch );
             if( Train->ggConverterOffButton.SubModel != nullptr ) {
@@ -1907,6 +2005,8 @@ void TTrain::OnCommand_compressortoggle( TTrain *Train, command_data const &Comm
         // only reacting to press, so the switch doesn't flip back and forth if key is held down
         if( false == Train->mvControlled->CompressorAllow ) {
             // turn on
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             // visual feedback
             Train->ggCompressorButton.UpdateValue( 1.0, Train->dsbSwitch );
             // impulse type switch has no effect if there's no power
@@ -1920,6 +2020,8 @@ void TTrain::OnCommand_compressortoggle( TTrain *Train, command_data const &Comm
         }
         else {
             //turn off
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             if( true == Train->mvControlled->CompressorSwitch( false ) ) {
                 // NOTE: we don't have switch type definition for the compresor switch
                 // so for the time being we have hard coded "impulse" switches for all EMUs
@@ -1991,16 +2093,26 @@ void TTrain::OnCommand_motorconnectorsopen( TTrain *Train, command_data const &C
         }
         return;
     }
+
+    command_data command = Command;
+    if( Train->mvControlled->StLinSwitchType == "toggle" ) {
+        if( ( Command.hint == command_hint::on )  && ( true == Train->mvControlled->StLinSwitchOff ) )  { return; }
+        if( ( Command.hint == command_hint::off ) && ( false == Train->mvControlled->StLinSwitchOff ) ) { return; }
+    }
+    else if( Command.hint == command_hint::off ) {
+        command.action = GLFW_RELEASE;
+    }
+
     // NOTE: because we don't have modeled actual circuits this is a simplification of the real mechanics
     // namely, pressing the button will flip it in the entire unit, which isn't exactly physically possible
-    if( Command.action == GLFW_PRESS ) {
+    if( command.action == GLFW_PRESS ) {
         // button works while it's held down but we can only pay attention to initial press
         if( false == Train->mvControlled->StLinSwitchOff ) {
             // open the connectors
             Train->mvControlled->StLinSwitchOff = true;
             if( ( Train->mvControlled->TrainType == dt_ET41 )
              || ( Train->mvControlled->TrainType == dt_ET42 ) ) {
-                // crude implementation of the butto affecting entire unit for multi-unit engines
+                // crude implementation of the button affecting entire unit for multi-unit engines
                 // TODO: rework it into part of standard command propagation system
                 if( ( Train->mvControlled->Couplers[ 0 ].Connected != nullptr )
                  && ( true == TestFlag( Train->mvControlled->Couplers[ 0 ].CouplingFlag, coupling::permanent ) ) ) {
@@ -2057,10 +2169,10 @@ void TTrain::OnCommand_motorconnectorsopen( TTrain *Train, command_data const &C
             }
         }
     }
-    else if( Command.action == GLFW_RELEASE ) {
+    else if( command.action == GLFW_RELEASE ) {
         // button released
         if( Train->mvControlled->StLinSwitchType != "toggle" ) {
-            // default button type (impulse) works on button release
+            // default button type (impulse) ceases its work on button release
             Train->mvControlled->StLinSwitchOff = false;
             if( ( Train->mvControlled->TrainType == dt_ET41 )
              || ( Train->mvControlled->TrainType == dt_ET42 ) ) {
@@ -2105,6 +2217,8 @@ void TTrain::OnCommand_motoroverloadrelaythresholdtoggle( TTrain *Train, command
                 ( false == Train->mvControlled->ShuntMode ) :
                 ( Train->mvControlled->Imax < Train->mvControlled->ImaxHi ) ) ) {
             // turn on
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             if( true == Train->mvControlled->CurrentSwitch( true ) ) {
                 // visual feedback
                 Train->ggMaxCurrentCtrl.UpdateValue( 1.0, Train->dsbSwitch );
@@ -2112,6 +2226,8 @@ void TTrain::OnCommand_motoroverloadrelaythresholdtoggle( TTrain *Train, command
         }
         else {
             //turn off
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             if( true == Train->mvControlled->CurrentSwitch( false ) ) {
                 // visual feedback
                 Train->ggMaxCurrentCtrl.UpdateValue( 0.0, Train->dsbSwitch );
@@ -2212,6 +2328,8 @@ void TTrain::OnCommand_headlighttoggleleft( TTrain *Train, command_data const &C
         // only reacting to press, so the switch doesn't flip back and forth if key is held down
         if( ( Train->DynamicObject->iLights[ vehicleside ] & light::headlight_left ) == 0 ) {
             // turn on
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             Train->DynamicObject->iLights[ vehicleside ] ^= light::headlight_left;
             // visual feedback
             Train->ggLeftLightButton.UpdateValue( 1.0, Train->dsbSwitch );
@@ -2222,6 +2340,8 @@ void TTrain::OnCommand_headlighttoggleleft( TTrain *Train, command_data const &C
         }
         else {
             //turn off
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             Train->DynamicObject->iLights[ vehicleside ] ^= light::headlight_left;
             // visual feedback
             Train->ggLeftLightButton.UpdateValue( 0.0, Train->dsbSwitch );
@@ -2245,6 +2365,8 @@ void TTrain::OnCommand_headlighttoggleright( TTrain *Train, command_data const &
         // only reacting to press, so the switch doesn't flip back and forth if key is held down
         if( ( Train->DynamicObject->iLights[ vehicleside ] & light::headlight_right ) == 0 ) {
             // turn on
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             Train->DynamicObject->iLights[ vehicleside ] ^= light::headlight_right;
             // visual feedback
             Train->ggRightLightButton.UpdateValue( 1.0, Train->dsbSwitch );
@@ -2255,6 +2377,8 @@ void TTrain::OnCommand_headlighttoggleright( TTrain *Train, command_data const &
         }
         else {
             //turn off
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             Train->DynamicObject->iLights[ vehicleside ] ^= light::headlight_right;
             // visual feedback
             Train->ggRightLightButton.UpdateValue( 0.0, Train->dsbSwitch );
@@ -2278,12 +2402,16 @@ void TTrain::OnCommand_headlighttoggleupper( TTrain *Train, command_data const &
         // only reacting to press, so the switch doesn't flip back and forth if key is held down
         if( ( Train->DynamicObject->iLights[ vehicleside ] & light::headlight_upper ) == 0 ) {
             // turn on
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             Train->DynamicObject->iLights[ vehicleside ] ^= light::headlight_upper;
             // visual feedback
             Train->ggUpperLightButton.UpdateValue( 1.0, Train->dsbSwitch );
         }
         else {
             //turn off
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             Train->DynamicObject->iLights[ vehicleside ] ^= light::headlight_upper;
             // visual feedback
             Train->ggUpperLightButton.UpdateValue( 0.0, Train->dsbSwitch );
@@ -2597,12 +2725,16 @@ void TTrain::OnCommand_headlightsdimtoggle( TTrain *Train, command_data const &C
         // only reacting to press, so the switch doesn't flip back and forth if key is held down
         if( false == Train->DynamicObject->DimHeadlights ) {
             // turn on
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             Train->DynamicObject->DimHeadlights = true;
             // visual feedback
             Train->ggDimHeadlightsButton.UpdateValue( 1.0, Train->dsbSwitch );
         }
         else {
             //turn off
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             Train->DynamicObject->DimHeadlights = false;
             // visual feedback
             Train->ggDimHeadlightsButton.UpdateValue( 0.0, Train->dsbSwitch );
@@ -2654,12 +2786,16 @@ void TTrain::OnCommand_interiorlightdimtoggle( TTrain *Train, command_data const
         // only reacting to press, so the switch doesn't flip back and forth if key is held down
         if( false == Train->bCabLightDim ) {
             // turn on
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             Train->bCabLightDim = true;
             // visual feedback
             Train->ggCabLightDimButton.UpdateValue( 1.0, Train->dsbSwitch );
         }
         else {
             //turn off
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             Train->bCabLightDim = false;
             // visual feedback
             Train->ggCabLightDimButton.UpdateValue( 0.0, Train->dsbSwitch );
@@ -2709,12 +2845,16 @@ void TTrain::OnCommand_heatingtoggle( TTrain *Train, command_data const &Command
         // only reacting to press, so the switch doesn't flip back and forth if key is held down
         if( false == Train->mvControlled->Heating ) {
             // turn on
+            if( Command.hint == command_hint::off ) { return; } // caller wants the other state
+
             Train->mvControlled->Heating = true;
             // visual feedback
             Train->ggTrainHeatingButton.UpdateValue( 1.0, Train->dsbSwitch );
         }
         else {
             //turn off
+            if( Command.hint == command_hint::on ) { return; } // caller wants the other state
+
             Train->mvControlled->Heating = false;
             // visual feedback
             Train->ggTrainHeatingButton.UpdateValue( 0.0, Train->dsbSwitch );
@@ -2863,8 +3003,9 @@ void TTrain::OnCommand_doortoggleright( TTrain *Train, command_data const &Comma
 
 void TTrain::OnCommand_carcouplingincrease( TTrain *Train, command_data const &Command ) {
 
-    if( true == FreeFlyModeFlag ) {
-        // tryb freefly
+    if( ( true == FreeFlyModeFlag )
+     && ( Command.action == GLFW_PRESS ) ) {
+        // tryb freefly, press only
         auto coupler { -1 };
         auto *vehicle { Train->DynamicObject->ABuScanNearestObject( Train->DynamicObject->GetTrack(), 1, 1500, coupler ) };
         if( vehicle == nullptr )
@@ -2884,8 +3025,9 @@ void TTrain::OnCommand_carcouplingincrease( TTrain *Train, command_data const &C
 
 void TTrain::OnCommand_carcouplingdisconnect( TTrain *Train, command_data const &Command ) {
 
-    if( true == FreeFlyModeFlag ) {
-        // tryb freefly
+    if( ( true == FreeFlyModeFlag )
+     && ( Command.action == GLFW_PRESS ) ) {
+        // tryb freefly, press only
         auto coupler { -1 };
         auto *vehicle { Train->DynamicObject->ABuScanNearestObject( Train->DynamicObject->GetTrack(), 1, 1500, coupler ) };
         if( vehicle == nullptr )
@@ -3451,43 +3593,27 @@ bool TTrain::Update( double const Deltatime )
             fEIMParams[1 + i][8] = 0;
             fEIMParams[1 + i][9] = 0;
         }
-
-        if (Global.iFeedbackMode == 4)
-        { // wykonywać tylko gdy wyprowadzone na pulpit
-            Console::ValueSet(0,
-                              mvOccupied->Compressor); // Ra: sterowanie miernikiem: zbiornik główny
-            Console::ValueSet(1,
-                              mvOccupied->PipePress); // Ra: sterowanie miernikiem: przewód główny
-            Console::ValueSet(2, mvOccupied->BrakePress); // Ra: sterowanie miernikiem: cylinder hamulcowy
-            Console::ValueSet(3, fHVoltage); // woltomierz wysokiego napięcia
-            Console::ValueSet(4, fHCurrent[2]); // Ra: sterowanie miernikiem: drugi amperomierz
-            Console::ValueSet(5,
-                fHCurrent[(mvControlled->TrainType & dt_EZT) ? 0 : 1]); // pierwszy amperomierz; dla
-            // EZT prąd całkowity
-            Console::ValueSet(6, fTachoVelocity); ////Ra: prędkość na pin 43 - wyjście
-            /// analogowe (to nie jest PWM);
-            /// skakanie zapewnia mechanika
-            /// napędu
+#ifdef _WIN32
+        if (Global.iFeedbackMode == 4) {
+            // wykonywać tylko gdy wyprowadzone na pulpit
+            // Ra: sterowanie miernikiem: zbiornik główny
+            Console::ValueSet(0, mvOccupied->Compressor);
+            // Ra: sterowanie miernikiem: przewód główny
+            Console::ValueSet(1, mvOccupied->PipePress);
+            // Ra: sterowanie miernikiem: cylinder hamulcowy
+            Console::ValueSet(2, mvOccupied->BrakePress);
+            // woltomierz wysokiego napięcia
+            Console::ValueSet(3, fHVoltage);
+            // Ra: sterowanie miernikiem: drugi amperomierz
+            Console::ValueSet(4, fHCurrent[2]);
+            // pierwszy amperomierz; dla EZT prąd całkowity
+            Console::ValueSet(5, fHCurrent[(mvControlled->TrainType & dt_EZT) ? 0 : 1]);
+            // Ra: prędkość na pin 43 - wyjście analogowe (to nie jest PWM); skakanie zapewnia mechanika napędu
+            Console::ValueSet(6, fTachoVelocity);
         }
-
-		if (Global.bMWDmasterEnable) // pobieranie danych dla pulpitu port (COM)
-		{ 
-			Console::ValueSet(0, mvOccupied->Compressor); // zbiornik główny
-			Console::ValueSet(1, mvOccupied->PipePress); // przewód główny
-			Console::ValueSet(2, mvOccupied->BrakePress); // cylinder hamulcowy
-			Console::ValueSet(3, fHVoltage); // woltomierz wysokiego napięcia
-			Console::ValueSet(4, fHCurrent[(mvControlled->TrainType & dt_EZT) ? 0 : 1]); 
-			// pierwszy amperomierz; dla EZT prąd całkowity
-			Console::ValueSet(5, fHCurrent[2]); // drugi amperomierz 2
-			Console::ValueSet(6, fHCurrent[3]); // drugi amperomierz 3
-			Console::ValueSet(7, fTachoVelocity);
-			//Console::ValueSet(8, mvControlled->BatteryVoltage); // jeszcze nie pora ;)
-		}
-
-        // hunter-080812: wyrzucanie szybkiego na elektrykach gdy nie ma napiecia
-        // przy dowolnym ustawieniu kierunkowego
-        // Ra: to już jest w T_MoverParameters::TractionForce(), ale zależy od
-        // kierunku
+#endif
+        // hunter-080812: wyrzucanie szybkiego na elektrykach gdy nie ma napiecia przy dowolnym ustawieniu kierunkowego
+        // Ra: to już jest w T_MoverParameters::TractionForce(), ale zależy od kierunku
         if( ( mvControlled->Mains )
          && ( mvControlled->EngineType == ElectricSeriesMotor ) ) {
             if( std::max( mvControlled->GetTrainsetVoltage(), std::fabs( mvControlled->RunningTraction.TractionVoltage ) ) < 0.5 * mvControlled->EnginePowerSource.MaxVoltage ) {
@@ -4026,9 +4152,10 @@ bool TTrain::Update( double const Deltatime )
         }
         if (ggBrakeCtrl.SubModel)
         {
+#ifdef _WIN32
             if (DynamicObject->Mechanik ?
                     (DynamicObject->Mechanik->AIControllFlag ? false : 
-						(Global.iFeedbackMode == 4 || (Global.bMWDmasterEnable && Global.bMWDBreakEnable))) :
+						(Global.iFeedbackMode == 4 /*|| (Global.bMWDmasterEnable && Global.bMWDBreakEnable)*/)) :
                     false) // nie blokujemy AI
             { // Ra: nie najlepsze miejsce, ale na początek gdzieś to dać trzeba
 				// Firleju: dlatego kasujemy i zastepujemy funkcją w Console
@@ -4037,7 +4164,6 @@ bool TTrain::Update( double const Deltatime )
                     double b = Console::AnalogCalibrateGet(0);
 					b = b * 8.0 - 2.0;
                     b = clamp<double>( b, -2.0, mvOccupied->BrakeCtrlPosNo ); // przycięcie zmiennej do granic
-					if (Global.bMWDdebugEnable && Global.iMWDDebugMode & 4) WriteLog("FV4a break position = " + to_string(b));
 					ggBrakeCtrl.UpdateValue(b); // przesów bez zaokrąglenia
 					mvOccupied->BrakeLevelSet(b);
 				}
@@ -4046,13 +4172,13 @@ bool TTrain::Update( double const Deltatime )
                     double b = Console::AnalogCalibrateGet(0);
 					b = b * 7.0 - 1.0;
                     b = clamp<double>( b, -1.0, mvOccupied->BrakeCtrlPosNo ); // przycięcie zmiennej do granic
-					if (Global.bMWDdebugEnable && Global.iMWDDebugMode & 4) WriteLog("FVel6 break position = " + to_string(b));
                     ggBrakeCtrl.UpdateValue(b); // przesów bez zaokrąglenia
                     mvOccupied->BrakeLevelSet(b);
                 }
                 // else //standardowa prodedura z kranem powiązanym z klawiaturą
                 // ggBrakeCtrl.UpdateValue(double(mvOccupied->BrakeCtrlPos));
             }
+#endif
             // else //standardowa prodedura z kranem powiązanym z klawiaturą
             // ggBrakeCtrl.UpdateValue(double(mvOccupied->BrakeCtrlPos));
             ggBrakeCtrl.UpdateValue(mvOccupied->fBrakeCtrlPos);
@@ -4060,12 +4186,12 @@ bool TTrain::Update( double const Deltatime )
         }
 
         if( ggLocalBrake.SubModel ) {
-
+#ifdef _WIN32
             if( ( DynamicObject->Mechanik != nullptr )
              && ( false == DynamicObject->Mechanik->AIControllFlag ) // nie blokujemy AI
              && ( mvOccupied->BrakeLocHandle == FD1 )
              && ( ( Global.iFeedbackMode == 4 )
-               || ( Global.bMWDmasterEnable && Global.bMWDBreakEnable ) ) ) {
+               /*|| ( Global.bMWDmasterEnable && Global.bMWDBreakEnable )*/ ) ) {
                 // Ra: nie najlepsze miejsce, ale na początek gdzieś to dać trzeba
                 // Firleju: dlatego kasujemy i zastepujemy funkcją w Console
                 auto const b = clamp<double>(
@@ -4074,12 +4200,10 @@ bool TTrain::Update( double const Deltatime )
                     ManualBrakePosNo );
                 ggLocalBrake.UpdateValue( b ); // przesów bez zaokrąglenia
                 mvOccupied->LocalBrakePos = int( 1.09 * b ); // sposób zaokrąglania jest do ustalenia
-                if( ( true == Global.bMWDdebugEnable )
-                 && ( ( Global.iMWDDebugMode & 4 ) != 0 ) ) {
-                    WriteLog( "FD1 break position = " + to_string( b ) );
-                }
             }
-            else {
+            else
+#endif
+            {
                 // standardowa prodedura z kranem powiązanym z klawiaturą
                 ggLocalBrake.UpdateValue( double( mvOccupied->LocalBrakePos ) );
             }
@@ -5146,6 +5270,27 @@ void TTrain::SetLights()
 // clears state of all cabin controls
 void TTrain::clear_cab_controls()
 {
+    // indicators exposed to custom control devices
+    btLampkaSHP.Clear(0);
+    btLampkaCzuwaka.Clear(1);
+    btLampkaOpory.Clear(2);
+    btLampkaWylSzybki.Clear(3);
+    btLampkaNadmSil.Clear(4);
+    btLampkaStyczn.Clear(5);
+    btLampkaPoslizg.Clear(6);
+    btLampkaNadmPrzetw.Clear(((mvControlled->TrainType & dt_EZT) != 0) ? -1 : 7); // EN57 nie ma tej lampki
+    btLampkaPrzetwOff.Clear(((mvControlled->TrainType & dt_EZT) != 0) ? 7 : -1 ); // za to ma tę
+    btLampkaNadmSpr.Clear(8);
+    btLampkaNadmWent.Clear(9);
+    btLampkaWysRozr.Clear(((mvControlled->TrainType & dt_ET22) != 0) ? -1 : 10); // ET22 nie ma tej lampki
+    btLampkaOgrzewanieSkladu.Clear(11);
+    btHaslerBrakes.Clear(12); // ciśnienie w cylindrach do odbijania na haslerze
+    btHaslerCurrent.Clear(13); // prąd na silnikach do odbijania na haslerze
+    // Jeśli ustawiamy nową wartość dla PoKeys wolna jest 15
+    // Numer 14 jest używany dla buczka SHP w update_sounds()
+
+    // other cab controls
+    // TODO: arrange in more readable manner, and eventually refactor
     ggMainCtrl.Clear();
     ggMainCtrlAct.Clear();
     ggScndCtrl.Clear();
@@ -5168,11 +5313,6 @@ void TTrain::clear_cab_controls()
     ggHornLowButton.Clear();
     ggHornHighButton.Clear();
     ggNextCurrentButton.Clear();
-/*
-    ggUniversal1Button.Clear();
-    ggUniversal2Button.Clear();
-    ggUniversal4Button.Clear();
-*/
     for( auto &universal : ggUniversals ) {
         universal.Clear();
     }
@@ -5215,35 +5355,19 @@ void TTrain::clear_cab_controls()
     ggClockHInd.Clear();
     ggEngineVoltage.Clear();
     ggLVoltage.Clear();
-                // ggLVoltage.Output(0); //Ra: sterowanie miernikiem: niskie napięcie
-    // ggEnrot1m.Clear();
-    // ggEnrot2m.Clear();
-    // ggEnrot3m.Clear();
-    // ggEngageRatio.Clear();
     ggMainGearStatus.Clear();
     ggIgnitionKey.Clear();
-				// Jeśli ustawiamy nową wartość dla PoKeys wolna jest 15
-				// Numer 14 jest używany dla buczka SHP w innym miejscu
-    btLampkaPoslizg.Clear(6);
-    btLampkaStyczn.Clear(5);
-    btLampkaNadmPrzetw.Clear(((mvControlled->TrainType & dt_EZT) != 0) ? -1 : 7); // EN57 nie ma tej lampki
+
     btLampkaPrzetw.Clear();
-    btLampkaPrzetwOff.Clear(((mvControlled->TrainType & dt_EZT) != 0) ? 7 : -1 ); // za to ma tę
     btLampkaPrzetwB.Clear();
     btLampkaPrzetwBOff.Clear();
     btLampkaPrzekRozn.Clear();
     btLampkaPrzekRoznPom.Clear();
-    btLampkaNadmSil.Clear(4);
     btLampkaUkrotnienie.Clear();
     btLampkaHamPosp.Clear();
-    btLampkaWylSzybki.Clear(3);
     btLampkaWylSzybkiOff.Clear();
     btLampkaWylSzybkiB.Clear();
     btLampkaWylSzybkiBOff.Clear();
-    btLampkaNadmWent.Clear(9);
-    btLampkaNadmSpr.Clear(8);
-    btLampkaOpory.Clear(2);
-    btLampkaWysRozr.Clear(((mvControlled->TrainType & dt_ET22) != 0) ? -1 : 10); // ET22 nie ma tej lampki
     btLampkaBezoporowa.Clear();
     btLampkaBezoporowaB.Clear();
     btLampkaMaxSila.Clear();
@@ -5254,9 +5378,6 @@ void TTrain::clear_cab_controls()
     btLampkaBlokadaDrzwi.Clear();
     btInstrumentLight.Clear();
     btLampkaWentZaluzje.Clear();
-    btLampkaOgrzewanieSkladu.Clear(11);
-    btLampkaSHP.Clear(0);
-    btLampkaCzuwaka.Clear(1);
     btLampkaDoorLeft.Clear();
     btLampkaDoorRight.Clear();
     btLampkaDepartureSignal.Clear();
@@ -5308,8 +5429,6 @@ void TTrain::clear_cab_controls()
     ggRearUpperLightButton.Clear();
     ggRearLeftEndLightButton.Clear();
     ggRearRightEndLightButton.Clear();
-    btHaslerBrakes.Clear(12); // ciśnienie w cylindrach do odbijania na haslerze
-    btHaslerCurrent.Clear(13); // prąd na silnikach do odbijania na haslerze
 }
 
 // NOTE: we can get rid of this function once we have per-cab persistent state
diff --git a/Train.h b/Train.h
index 9b7d6807..db392353 100644
--- a/Train.h
+++ b/Train.h
@@ -65,9 +65,34 @@ public:
 
 class TTrain
 {
-    friend class TWorld; // temporary due to use of play_sound TODO: refactor this
-
   public:
+// types
+    struct state_t {
+        std::uint8_t shp;
+        std::uint8_t alerter;
+        std::uint8_t motor_resistors;
+        std::uint8_t line_breaker;
+        std::uint8_t motor_overload;
+        std::uint8_t motor_connectors;
+        std::uint8_t wheelslip;
+        std::uint8_t converter_overload;
+        std::uint8_t converter_off;
+        std::uint8_t compressor_overload;
+        std::uint8_t ventilator_overload;
+        std::uint8_t motor_overload_threshold;
+        std::uint8_t train_heating;
+        std::uint8_t recorder_braking;
+        std::uint8_t recorder_power;
+        std::uint8_t alerter_sound;
+        float velocity;
+        float reservoir_pressure;
+        float pipe_pressure;
+        float brake_pressure;
+        float hv_voltage;
+        std::array<float, 3> hv_current;
+    };
+
+// methods
     bool CabChange(int iDirection);
     bool ShowNextCurrent; // pokaz przd w podlaczonej lokomotywie (ET41)
     bool InitializeCab(int NewCabNo, std::string const &asFileName);
@@ -86,6 +111,7 @@ class TTrain
     // McZapkie-310302: ladowanie parametrow z pliku
     bool LoadMMediaFile(std::string const &asFileName);
     PyObject *GetTrainState();
+    state_t get_state() const;
 
   private:
 // types
@@ -119,19 +145,23 @@ class TTrain
     static void OnCommand_mastercontrollerincreasefast( TTrain *Train, command_data const &Command );
     static void OnCommand_mastercontrollerdecrease( TTrain *Train, command_data const &Command );
     static void OnCommand_mastercontrollerdecreasefast( TTrain *Train, command_data const &Command );
+    static void OnCommand_mastercontrollerset( TTrain *Train, command_data const &Command );
     static void OnCommand_secondcontrollerincrease( TTrain *Train, command_data const &Command );
     static void OnCommand_secondcontrollerincreasefast( TTrain *Train, command_data const &Command );
     static void OnCommand_secondcontrollerdecrease( TTrain *Train, command_data const &Command );
     static void OnCommand_secondcontrollerdecreasefast( TTrain *Train, command_data const &Command );
+    static void OnCommand_secondcontrollerset( TTrain *Train, command_data const &Command );
     static void OnCommand_notchingrelaytoggle( TTrain *Train, command_data const &Command );
     static void OnCommand_mucurrentindicatorothersourceactivate( TTrain *Train, command_data const &Command );
     static void OnCommand_independentbrakeincrease( TTrain *Train, command_data const &Command );
     static void OnCommand_independentbrakeincreasefast( TTrain *Train, command_data const &Command );
     static void OnCommand_independentbrakedecrease( TTrain *Train, command_data const &Command );
     static void OnCommand_independentbrakedecreasefast( TTrain *Train, command_data const &Command );
+    static void OnCommand_independentbrakeset( TTrain *Train, command_data const &Command );
     static void OnCommand_independentbrakebailoff( TTrain *Train, command_data const &Command );
     static void OnCommand_trainbrakeincrease( TTrain *Train, command_data const &Command );
     static void OnCommand_trainbrakedecrease( TTrain *Train, command_data const &Command );
+    static void OnCommand_trainbrakeset( TTrain *Train, command_data const &Command );
     static void OnCommand_trainbrakecharging( TTrain *Train, command_data const &Command );
     static void OnCommand_trainbrakerelease( TTrain *Train, command_data const &Command );
     static void OnCommand_trainbrakefirstservice( TTrain *Train, command_data const &Command );
diff --git a/command.cpp b/command.cpp
index b24c988c..e3ee9cad 100644
--- a/command.cpp
+++ b/command.cpp
@@ -26,18 +26,22 @@ commanddescription_sequence Commands_descriptions = {
     { "mastercontrollerincreasefast", command_target::vehicle },
     { "mastercontrollerdecrease", command_target::vehicle },
     { "mastercontrollerdecreasefast", command_target::vehicle },
+    { "mastercontrollerset", command_target::vehicle },
     { "secondcontrollerincrease", command_target::vehicle },
     { "secondcontrollerincreasefast", command_target::vehicle },
     { "secondcontrollerdecrease", command_target::vehicle },
     { "secondcontrollerdecreasefast", command_target::vehicle },
+    { "secondcontrollerset", command_target::vehicle },
     { "mucurrentindicatorothersourceactivate", command_target::vehicle },
     { "independentbrakeincrease", command_target::vehicle },
     { "independentbrakeincreasefast", command_target::vehicle },
     { "independentbrakedecrease", command_target::vehicle },
     { "independentbrakedecreasefast", command_target::vehicle },
+    { "independentbrakeset", command_target::vehicle },
     { "independentbrakebailoff", command_target::vehicle },
     { "trainbrakeincrease", command_target::vehicle },
     { "trainbrakedecrease", command_target::vehicle },
+    { "trainbrakeset", command_target::vehicle },
     { "trainbrakecharging", command_target::vehicle },
     { "trainbrakerelease", command_target::vehicle },
     { "trainbrakefirstservice", command_target::vehicle },
@@ -173,7 +177,7 @@ command_queue::pop( command_data &Command, std::size_t const Recipient ) {
 }
 
 void
-command_relay::post( user_command const Command, std::uint64_t const Param1, std::uint64_t const Param2, int const Action, std::uint16_t const Recipient ) const {
+command_relay::post( user_command const Command, std::uint64_t const Param1, std::uint64_t const Param2, int const Action, command_hint const Hint, std::uint16_t const Recipient ) const {
 
     auto const &command = simulation::Commands_descriptions[ static_cast<std::size_t>( Command ) ];
     if( ( command.target == command_target::vehicle )
@@ -190,6 +194,7 @@ command_relay::post( user_command const Command, std::uint64_t const Param1, std
             Action,
             Param1,
             Param2,
+            Hint,
             Timer::GetDeltaTime() },
         static_cast<std::size_t>( command.target ) | Recipient );
 /*
diff --git a/command.h b/command.h
index 98a69caa..ab8e32d1 100644
--- a/command.h
+++ b/command.h
@@ -20,18 +20,22 @@ enum class user_command {
     mastercontrollerincreasefast,
     mastercontrollerdecrease,
     mastercontrollerdecreasefast,
+    mastercontrollerset,
     secondcontrollerincrease,
     secondcontrollerincreasefast,
     secondcontrollerdecrease,
     secondcontrollerdecreasefast,
+    secondcontrollerset,
     mucurrentindicatorothersourceactivate,
     independentbrakeincrease,
     independentbrakeincreasefast,
     independentbrakedecrease,
     independentbrakedecreasefast,
+    independentbrakeset,
     independentbrakebailoff,
     trainbrakeincrease,
     trainbrakedecrease,
+    trainbrakeset,
     trainbrakecharging,
     trainbrakerelease,
     trainbrakefirstservice,
@@ -135,6 +139,12 @@ enum class user_command {
     none = -1
 };
 
+enum class command_hint {
+    off,
+    on,
+    none = -1
+};
+
 enum class command_target {
 
     userinterface,
@@ -163,6 +173,7 @@ struct command_data {
     int action; // press, repeat or release
     std::uint64_t param1;
     std::uint64_t param2;
+    command_hint hint;
     double time_delta;
 };
 
@@ -212,7 +223,8 @@ public:
     // posts specified command for the specified recipient
     // TODO: replace uint16_t with recipient handle, based on item id
     void
-        post( user_command const Command, std::uint64_t const Param1, std::uint64_t const Param2, int const Action, std::uint16_t const Recipient ) const;
+        post( user_command const Command, std::uint64_t const Param1, std::uint64_t const Param2,
+            int const Action, command_hint const Hint, std::uint16_t const Recipient ) const;
 private:
 // types
 // members
diff --git a/gamepadinput.cpp b/gamepadinput.cpp
index ec433f1c..e3b7c24b 100644
--- a/gamepadinput.cpp
+++ b/gamepadinput.cpp
@@ -201,6 +201,7 @@ gamepad_input::process_axes( glm::vec2 Leftstick, glm::vec2 const &Rightstick, g
             reinterpret_cast<std::uint64_t const &>( turnx ),
             reinterpret_cast<std::uint64_t const &>( turny ),
             GLFW_PRESS,
+            command_hint::none,
             // as we haven't yet implemented either item id system or multiplayer, the 'local' controlled vehicle and entity have temporary ids of 0
             // TODO: pass correct entity id once the missing systems are in place
             0 );
@@ -218,6 +219,7 @@ gamepad_input::process_axes( glm::vec2 Leftstick, glm::vec2 const &Rightstick, g
                 reinterpret_cast<std::uint64_t const &>( movex ),
                 reinterpret_cast<std::uint64_t const &>( movez ),
                 GLFW_PRESS,
+                command_hint::none,
                 0 );
         }
     }
@@ -247,6 +249,7 @@ gamepad_input::process_mode( float const Value, std::uint16_t const Recipient )
                 lookup.second,
                 0, 0,
                 GLFW_RELEASE,
+                command_hint::none,
                 Recipient );
             m_modeaccumulator = 0.0f;
         }
@@ -260,6 +263,7 @@ gamepad_input::process_mode( float const Value, std::uint16_t const Recipient )
                     lookup.first,
                     0, 0,
                     GLFW_PRESS,
+                    command_hint::none,
                     Recipient );
                 m_modeaccumulator -= 1.0f;
             }
@@ -271,6 +275,7 @@ gamepad_input::process_mode( float const Value, std::uint16_t const Recipient )
                 lookup.first,
                 0, 0,
                 GLFW_RELEASE,
+                command_hint::none,
                 Recipient );
             m_modeaccumulator = 0.0f;
         }
@@ -284,6 +289,7 @@ gamepad_input::process_mode( float const Value, std::uint16_t const Recipient )
                 lookup.first,
                 0, 0,
                 GLFW_RELEASE,
+                command_hint::none,
                 Recipient );
             m_modeaccumulator = 0.0f;
         }
@@ -297,6 +303,7 @@ gamepad_input::process_mode( float const Value, std::uint16_t const Recipient )
                     lookup.second,
                     0, 0,
                     GLFW_PRESS,
+                    command_hint::none,
                     Recipient );
                 m_modeaccumulator += 1.0f;
             }
@@ -308,6 +315,7 @@ gamepad_input::process_mode( float const Value, std::uint16_t const Recipient )
                 lookup.second,
                 0, 0,
                 GLFW_RELEASE,
+                command_hint::none,
                 Recipient );
             m_modeaccumulator = 0.0f;
         }
diff --git a/keyboardinput.cpp b/keyboardinput.cpp
index c619436c..ee6fac6c 100644
--- a/keyboardinput.cpp
+++ b/keyboardinput.cpp
@@ -158,7 +158,7 @@ keyboard_input::key( int const Key, int const Action ) {
     // NOTE: basic keyboard controls don't have any parameters
     // as we haven't yet implemented either item id system or multiplayer, the 'local' controlled vehicle and entity have temporary ids of 0
     // TODO: pass correct entity id once the missing systems are in place
-    m_relay.post( lookup->second, 0, 0, Action, 0 );
+    m_relay.post( lookup->second, 0, 0, Action, command_hint::none, 0 );
 
     return true;
 }
@@ -179,6 +179,8 @@ keyboard_input::default_bindings() {
         { GLFW_KEY_KP_SUBTRACT },
         // mastercontrollerdecreasefast
         { GLFW_KEY_KP_SUBTRACT | keymodifier::shift },
+        // mastercontrollerset
+        { -1 },
         // secondcontrollerincrease
         { GLFW_KEY_KP_DIVIDE },
         // secondcontrollerincreasefast
@@ -187,6 +189,8 @@ keyboard_input::default_bindings() {
         { GLFW_KEY_KP_MULTIPLY },
         // secondcontrollerdecreasefast
         { GLFW_KEY_KP_MULTIPLY | keymodifier::shift },
+        // secondcontrollerset
+        { -1 },
         // mucurrentindicatorothersourceactivate
         { GLFW_KEY_Z | keymodifier::shift },
         // independentbrakeincrease
@@ -197,12 +201,16 @@ keyboard_input::default_bindings() {
         { GLFW_KEY_KP_7 },
         // independentbrakedecreasefast
         { GLFW_KEY_KP_7 | keymodifier::shift },
+        // independentbrakeset
+        { -1 },
         // independentbrakebailoff
         { GLFW_KEY_KP_4 },
         // trainbrakeincrease
         { GLFW_KEY_KP_3 },
         // trainbrakedecrease
         { GLFW_KEY_KP_9 },
+        // trainbrakeset
+        { -1 },
         // trainbrakecharging
         { GLFW_KEY_KP_DECIMAL },
         // trainbrakerelease
@@ -481,6 +489,7 @@ keyboard_input::poll() {
             reinterpret_cast<std::uint64_t const &>( movexparam ),
             reinterpret_cast<std::uint64_t const &>( movezparam ),
             GLFW_PRESS,
+            command_hint::none,
             0 );
     }
 
@@ -503,6 +512,7 @@ keyboard_input::poll() {
             reinterpret_cast<std::uint64_t const &>( moveyparam ),
             0,
             GLFW_PRESS,
+            command_hint::none,
             0 );
     }
 
diff --git a/maszyna.vcxproj.filters b/maszyna.vcxproj.filters
index b02c522c..755e3ad1 100644
--- a/maszyna.vcxproj.filters
+++ b/maszyna.vcxproj.filters
@@ -147,9 +147,6 @@
     <ClCompile Include="stdafx.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="Console\MWD.cpp">
-      <Filter>Source Files\input</Filter>
-    </ClCompile>
     <ClCompile Include="Names.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -237,6 +234,9 @@
     <ClCompile Include="utilities.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="uart.cpp">
+      <Filter>Source Files\input</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="Globals.h">
@@ -368,9 +368,6 @@
     <ClInclude Include="Driver.h">
       <Filter>Header Files</Filter>
     </ClInclude>
-    <ClInclude Include="Console\MWD.h">
-      <Filter>Header Files\input</Filter>
-    </ClInclude>
     <ClInclude Include="sun.h">
       <Filter>Header Files</Filter>
     </ClInclude>
@@ -461,6 +458,9 @@
     <ClInclude Include="utilities.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="uart.h">
+      <Filter>Header Files\input</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="maszyna.rc">
diff --git a/mouseinput.cpp b/mouseinput.cpp
index da2c7ee5..8ab848e9 100644
--- a/mouseinput.cpp
+++ b/mouseinput.cpp
@@ -42,6 +42,7 @@ mouse_input::move( double Mousex, double Mousey ) {
             reinterpret_cast<std::uint64_t const &>( Mousex ),
             reinterpret_cast<std::uint64_t const &>( Mousey ),
             GLFW_PRESS,
+            command_hint::none,
             // as we haven't yet implemented either item id system or multiplayer, the 'local' controlled vehicle and entity have temporary ids of 0
             // TODO: pass correct entity id once the missing systems are in place
             0 );
@@ -60,6 +61,7 @@ mouse_input::move( double Mousex, double Mousey ) {
             reinterpret_cast<std::uint64_t const &>( viewoffset.x ),
             reinterpret_cast<std::uint64_t const &>( viewoffset.y ),
             GLFW_PRESS,
+            command_hint::none,
             // as we haven't yet implemented either item id system or multiplayer, the 'local' controlled vehicle and entity have temporary ids of 0
             // TODO: pass correct entity id once the missing systems are in place
             0 );
@@ -102,7 +104,7 @@ mouse_input::button( int const Button, int const Action ) {
                 // NOTE: basic keyboard controls don't have any parameters
                 // as we haven't yet implemented either item id system or multiplayer, the 'local' controlled vehicle and entity have temporary ids of 0
                 // TODO: pass correct entity id once the missing systems are in place
-                m_relay.post( mousecommand, 0, 0, Action, 0 );
+                m_relay.post( mousecommand, 0, 0, Action, command_hint::none, 0 );
                 mousecommand = user_command::none;
             }
             else {
@@ -141,7 +143,7 @@ mouse_input::button( int const Button, int const Action ) {
                         // NOTE: basic keyboard controls don't have any parameters
                         // as we haven't yet implemented either item id system or multiplayer, the 'local' controlled vehicle and entity have temporary ids of 0
                         // TODO: pass correct entity id once the missing systems are in place
-                        m_relay.post( mousecommand, 0, 0, Action, 0 );
+                        m_relay.post( mousecommand, 0, 0, Action, command_hint::none, 0 );
                         m_updateaccumulator = -0.25; // prevent potential command repeat right after issuing one
 
                         switch( mousecommand ) {
@@ -192,13 +194,13 @@ mouse_input::poll() {
             // NOTE: basic keyboard controls don't have any parameters
             // as we haven't yet implemented either item id system or multiplayer, the 'local' controlled vehicle and entity have temporary ids of 0
             // TODO: pass correct entity id once the missing systems are in place
-            m_relay.post( m_mousecommandleft, 0, 0, GLFW_REPEAT, 0 );
+            m_relay.post( m_mousecommandleft, 0, 0, GLFW_REPEAT, command_hint::none, 0 );
         }
         if( m_mousecommandright != user_command::none ) {
             // NOTE: basic keyboard controls don't have any parameters
             // as we haven't yet implemented either item id system or multiplayer, the 'local' controlled vehicle and entity have temporary ids of 0
             // TODO: pass correct entity id once the missing systems are in place
-            m_relay.post( m_mousecommandright, 0, 0, GLFW_REPEAT, 0 );
+            m_relay.post( m_mousecommandright, 0, 0, GLFW_REPEAT, command_hint::none, 0 );
         }
         m_updateaccumulator -= updaterate;
     }
diff --git a/Console/MWD.cpp b/old/MWD.cpp
similarity index 100%
rename from Console/MWD.cpp
rename to old/MWD.cpp
diff --git a/Console/MWD.h b/old/MWD.h
similarity index 100%
rename from Console/MWD.h
rename to old/MWD.h
diff --git a/uart.cpp b/uart.cpp
new file mode 100644
index 00000000..9ee42629
--- /dev/null
+++ b/uart.cpp
@@ -0,0 +1,243 @@
+#include "stdafx.h"
+#include "uart.h"
+
+#include "Globals.h"
+#include "World.h"
+#include "Train.h"
+#include "Logs.h"
+
+uart_input::uart_input()
+{
+    conf = Global.uart_conf;
+
+    if (sp_get_port_by_name(conf.port.c_str(), &port) != SP_OK)
+        throw std::runtime_error("uart: cannot find specified port");
+
+    if (sp_open(port, SP_MODE_READ_WRITE) != SP_OK)
+        throw std::runtime_error("uart: cannot open port");
+
+	sp_port_config *config;
+
+    if (sp_new_config(&config) != SP_OK ||
+		sp_set_config_baudrate(config, conf.baud) != SP_OK ||
+		sp_set_config_flowcontrol(config, SP_FLOWCONTROL_NONE) != SP_OK ||
+		sp_set_config_bits(config, 8) != SP_OK ||
+		sp_set_config_stopbits(config, 1) != SP_OK ||
+		sp_set_config_parity(config, SP_PARITY_NONE) != SP_OK ||
+		sp_set_config(port, config) != SP_OK)
+        throw std::runtime_error("uart: cannot set config");
+
+	sp_free_config(config);
+
+    if (sp_flush(port, SP_BUF_BOTH) != SP_OK)
+        throw std::runtime_error("uart: cannot flush");
+
+    old_packet.fill(0);
+    last_update = std::chrono::high_resolution_clock::now();
+}
+
+uart_input::~uart_input()
+{
+	std::array<uint8_t, 31> buffer = { 0 };
+	sp_blocking_write(port, (void*)buffer.data(), buffer.size(), 0);
+	sp_drain(port);
+
+    sp_close(port);
+    sp_free_port(port);
+}
+
+#define SPLIT_INT16(x) (uint8_t)x, (uint8_t)(x >> 8)
+
+void uart_input::poll()
+{
+    auto now = std::chrono::high_resolution_clock::now();
+    if (std::chrono::duration<float>(now - last_update).count() < conf.updatetime)
+        return;
+    last_update = now;
+
+    auto *t = Global.pWorld->train();
+	if (!t)
+		return;
+
+    sp_return ret;
+
+    if ((ret = sp_input_waiting(port)) >= 16)
+    {
+        std::array<uint8_t, 16> buffer;
+        ret = sp_blocking_read(port, (void*)buffer.data(), buffer.size(), 0);
+		if (ret < 0)
+            throw std::runtime_error("uart: failed to read from port");
+
+		if (conf.debug)
+		{
+			char buf[buffer.size() * 3 + 1];
+			size_t pos = 0;
+			for (uint8_t b : buffer)
+				pos += sprintf(&buf[pos], "%02X ", b);
+			WriteLog("uart: rx: " + std::string(buf));
+		}
+
+		data_pending = false;
+
+        for (auto entry : input_bits)
+        {
+            input_type_t type = std::get<2>(entry);
+
+            size_t byte = std::get<0>(entry) / 8;
+            size_t bit = std::get<0>(entry) % 8;
+
+            bool state = ( (buffer[byte] & (1 << bit)) != 0 );
+
+			bool repeat = (type == impulse_r || 
+			               type == impulse_r_off ||
+			               type == impulse_r_on);
+
+            bool changed = ( (buffer[ byte ] & (1 << bit)) != (old_packet[ byte ] & (1 << bit)) );
+
+            if (!changed && !(repeat && state))
+                continue;
+
+            int action;
+            command_hint desired_state;
+
+            if (type == toggle)
+            {
+                action = GLFW_PRESS;
+                desired_state = ( state ? command_hint::on : command_hint::off );
+            }
+            else if (type == impulse_r_on)
+            {
+                action = ( state ? (changed ? GLFW_PRESS : GLFW_REPEAT) : GLFW_RELEASE );
+                desired_state = command_hint::on;
+            }
+            else if (type == impulse_r_off)
+            {
+                action = ( state ? (changed ? GLFW_PRESS : GLFW_REPEAT) : GLFW_RELEASE );
+                desired_state = command_hint::off;
+            }
+            else if (type == impulse || type == impulse_r)
+            {
+                action = ( state ? (changed ? GLFW_PRESS : GLFW_REPEAT) : GLFW_RELEASE );
+                desired_state = command_hint::none;
+            }
+
+            relay.post( std::get<1>(entry), 0, 0, action, desired_state, 0 );
+        }
+
+        if( true == conf.mainenable ) {
+            // master controller
+            relay.post(
+                user_command::mastercontrollerset,
+                buffer[ 6 ],
+                0,
+                GLFW_PRESS,
+                command_hint::none,
+                // TODO: pass correct entity id once the missing systems are in place
+                0 );
+        }
+        if( true == conf.scndenable ) {
+            // second controller
+            relay.post(
+                user_command::secondcontrollerset,
+                buffer[ 7 ],
+                0,
+                GLFW_PRESS,
+                command_hint::none,
+                // TODO: pass correct entity id once the missing systems are in place
+                0 );
+        }
+        if( true == conf.trainenable ) {
+            // train brake
+            double const position { (float)( ( (uint16_t)buffer[ 8 ] | ( (uint16_t)buffer[ 9 ] << 8 ) ) - conf.mainbrakemin ) / ( conf.mainbrakemax - conf.mainbrakemin ) };
+            relay.post(
+                user_command::trainbrakeset,
+                reinterpret_cast<std::uint64_t const &>( position ),
+                0,
+                GLFW_PRESS,
+                command_hint::none,
+                // TODO: pass correct entity id once the missing systems are in place
+                0 );
+        }
+        if( true == conf.localenable ) {
+            // independent brake
+            double const position { (float)( ( (uint16_t)buffer[ 10 ] | ( (uint16_t)buffer[ 11 ] << 8 ) ) - conf.localbrakemin ) / ( conf.localbrakemax - conf.localbrakemin ) };
+            relay.post(
+                user_command::independentbrakeset,
+                reinterpret_cast<std::uint64_t const &>( position ),
+                0,
+                GLFW_PRESS,
+                command_hint::none,
+                // TODO: pass correct entity id once the missing systems are in place
+                0 );
+        }
+
+        old_packet = buffer;
+    }
+
+	if (!data_pending && sp_output_waiting(port) == 0)
+	{
+	    // TODO: ugly! move it into structure like input_bits
+        auto const trainstate = t->get_state();
+
+	    uint8_t tacho = Global.iPause ? 0 : trainstate.velocity;
+	    uint16_t tank_press = (uint16_t)std::min(conf.tankuart, trainstate.reservoir_pressure * 0.1f / conf.tankmax * conf.tankuart);
+	    uint16_t pipe_press = (uint16_t)std::min(conf.pipeuart, trainstate.pipe_pressure * 0.1f / conf.pipemax * conf.pipeuart);
+	    uint16_t brake_press = (uint16_t)std::min(conf.brakeuart, trainstate.brake_pressure * 0.1f / conf.brakemax * conf.brakeuart);
+	    uint16_t hv_voltage = (uint16_t)std::min(conf.hvuart, trainstate.hv_voltage / conf.hvmax * conf.hvuart);
+	    uint16_t current1 = (uint16_t)std::min(conf.currentuart, trainstate.hv_current[0]) / conf.currentmax * conf.currentuart;
+	    uint16_t current2 = (uint16_t)std::min(conf.currentuart, trainstate.hv_current[1]) / conf.currentmax * conf.currentuart;
+	    uint16_t current3 = (uint16_t)std::min(conf.currentuart, trainstate.hv_current[2]) / conf.currentmax * conf.currentuart;
+
+	    std::array<uint8_t, 31> buffer {
+            //byte 0
+			tacho,
+            //byte 1
+	        0,
+            //byte 2
+			(uint8_t)(
+                trainstate.motor_resistors << 1
+              | trainstate.motor_overload_threshold << 2),
+            //byte 3
+			0,
+            //byte 4
+			(uint8_t)(
+                trainstate.train_heating << 0
+              | trainstate.motor_resistors << 1
+              | trainstate.wheelslip << 2
+              | trainstate.alerter << 6
+              | trainstate.shp << 7),
+            //byte 5
+			(uint8_t)(
+                trainstate.motor_connectors << 0
+              | trainstate.converter_overload << 2
+              | trainstate.motor_overload << 4
+              | trainstate.line_breaker << 5
+              | trainstate.compressor_overload << 6),
+            //byte 6
+			(uint8_t)( trainstate.alerter_sound << 7),
+	        SPLIT_INT16(brake_press), //byte 7-8
+	        SPLIT_INT16(pipe_press), //byte 9-10
+	        SPLIT_INT16(tank_press), //byte 11-12
+	        SPLIT_INT16(hv_voltage), //byte 13-14
+	        SPLIT_INT16(current1), //byte 15-16
+	        SPLIT_INT16(current2), //byte 17-18
+	        SPLIT_INT16(current3), //byte 19-20
+			0, 0, 0, 0, 0, 0, 0, 0, 0, 0 //byte 21-30
+	    };
+
+		if (conf.debug)
+		{
+			char buf[buffer.size() * 3 + 1];
+			size_t pos = 0;
+			for (uint8_t b : buffer)
+				pos += sprintf(&buf[pos], "%02X ", b);
+			WriteLog("uart: tx: " + std::string(buf));
+		}
+
+	    ret = sp_blocking_write(port, (void*)buffer.data(), buffer.size(), 0);
+	    if (ret != buffer.size())
+			throw std::runtime_error("uart: failed to write to port");
+
+		data_pending = true;
+	}
+}
diff --git a/uart.h b/uart.h
new file mode 100644
index 00000000..4ab96f8f
--- /dev/null
+++ b/uart.h
@@ -0,0 +1,92 @@
+#pragma once
+
+#include <libserialport.h>
+#include "command.h"
+
+class uart_input
+{
+public:
+// types
+    struct conf_t {
+        bool enable = false;
+        std::string port;
+        int baud;
+        float updatetime;
+
+        float mainbrakemin = 0.0f;
+        float mainbrakemax = 65535.0f;
+        float localbrakemin = 0.0f;
+        float localbrakemax = 65535.0f;
+        float tankmax = 10.0f;
+        float tankuart = 65535.0f;
+        float pipemax = 10.0f;
+        float pipeuart = 65535.0f;
+        float brakemax = 10.0f;
+        float brakeuart = 65535.0f;
+        float hvmax = 100000.0f;
+        float hvuart = 65535.0f;
+        float currentmax = 10000.0f;
+        float currentuart = 65535.0f;
+
+        bool mainenable = true;
+        bool scndenable = true;
+        bool trainenable = true;
+        bool localenable = true;
+
+        bool debug = false;
+    };
+
+// methods
+    uart_input();
+    ~uart_input();
+    void poll();
+
+private:
+// types
+    enum input_type_t
+    {
+        toggle,
+        impulse,
+        impulse_r,
+        impulse_r_on,
+        impulse_r_off
+    };
+
+    std::array<std::tuple<size_t, user_command, input_type_t>, 23> input_bits =
+    {
+        std::make_tuple(1, user_command::linebreakertoggle, impulse_r_off),
+        std::make_tuple(2, user_command::linebreakertoggle, impulse_r_on),
+        std::make_tuple(3, user_command::motoroverloadrelayreset, impulse),
+        std::make_tuple(5, user_command::converteroverloadrelayreset, impulse),
+        std::make_tuple(6, user_command::motorconnectorsopen, toggle),
+        std::make_tuple(7, user_command::alerteracknowledge, impulse_r),
+
+        std::make_tuple(9, user_command::convertertoggle, toggle),
+        std::make_tuple(10, user_command::compressortoggle, toggle),
+        std::make_tuple(11, user_command::sandboxactivate, impulse),
+        std::make_tuple(12, user_command::heatingtoggle, toggle),
+
+        std::make_tuple(15, user_command::motoroverloadrelaythresholdtoggle, toggle),
+        std::make_tuple(16, user_command::pantographtogglefront, toggle),
+        std::make_tuple(17, user_command::pantographtogglerear, toggle),
+        std::make_tuple(18, user_command::wheelspinbrakeactivate, impulse),
+        std::make_tuple(19, user_command::headlightsdimtoggle, toggle),
+        std::make_tuple(20, user_command::interiorlightdimtoggle, toggle),
+        std::make_tuple(21, user_command::independentbrakebailoff, impulse),
+        std::make_tuple(22, user_command::hornhighactivate, impulse),
+        std::make_tuple(23, user_command::hornlowactivate, impulse),
+
+        std::make_tuple(24, user_command::batterytoggle, toggle),
+        std::make_tuple(25, user_command::headlighttoggleleft, toggle),
+        std::make_tuple(26, user_command::headlighttoggleupper, toggle),
+        std::make_tuple(27, user_command::headlighttoggleright, toggle)
+    };
+
+// members
+    sp_port *port = nullptr;
+    command_relay relay;
+    std::array<uint8_t, 16> old_packet;
+    std::chrono::time_point<std::chrono::high_resolution_clock> last_update;
+    conf_t conf;
+	bool data_pending = false;
+};