diff --git a/arduino/AVCLan_mini/AVCLan_mini.ino b/arduino/AVCLan_mini/AVCLan_mini.ino
new file mode 100644
index 0000000..678b033
--- /dev/null
+++ b/arduino/AVCLan_mini/AVCLan_mini.ino
@@ -0,0 +1,141 @@
+
+#include <AVCLanDrv.h>
+#include <BuffSerial.h>
+#include <config.h>
+
+
+int ledPin = 13;                 // LED connected to digital pin 13
+AVCLanDrv avclan;
+bool first;
+byte t;
+byte count;
+
+void setup(){
+  pinMode(ledPin, OUTPUT);      // sets the digital pin as output
+  bSerial.begin(250000);
+  avclan.begin();
+  bSerial.println("AVCLan");
+  first = true;
+}
+
+void loop(){
+
+
+  if (INPUT_IS_SET){
+//    LedOn();
+    byte res = avclan.readMessage();
+    if (!res){
+      avclan.printMessage(true);
+    }else{
+      bSerial.print("R");
+      bSerial.printHex4(res);
+      bSerial.println();
+      while (!avclan.isAvcBusFree());
+    }
+//    LedOff();
+  }else{
+    if (first){
+      first = false;
+      avclan.deviceAddress = 0x240;
+      avclan.broadcast = AVC_MSG_BROADCAST;
+      avclan.masterAddress = 0x0360;
+      avclan.slaveAddress  = 0x01FF;
+      avclan.dataSize      = 0x04;
+      avclan.message[0]    = 0x01;
+      avclan.message[1]    = 0x11;
+      avclan.message[2]    = 0x13;
+      avclan.message[3]    = 0x63;
+//      byte res = avclan.sendMessage();
+//      if (!res){
+//        avclan.printMessage(false);
+//      }else{
+//        bSerial.print("W");
+//        bSerial.printHex4(res);
+//        bSerial.println();
+//      }
+    }  
+  }
+  if (bSerial.rxEnabled()) {
+    cbi(UCSR0B, RXCIE0);								// disable RX complete interrupt
+    uint8_t readkey = bSerial.rxRead();
+
+    switch (readkey){
+      case 'P':                                  // print config
+        bSerial.print("Overflow: ");
+        bSerial.printHex8(bSerial.txOverflow >> 8);
+        bSerial.printHex8(bSerial.txOverflow);
+        bSerial.println();
+        break;
+      case 'M':
+        count = 0;     
+        while(1){
+          while (INPUT_IS_SET);
+          uint8_t oldSREG = SREG;
+          cli();             // disable interrupts
+          while (INPUT_IS_CLEAR);
+          TCNT2 = 0;
+          while (INPUT_IS_SET){
+            t = TCNT2;
+            if (t > 0xF0) break;
+          };
+          t = t / 2; 
+          SREG = oldSREG;
+          bSerial.printDec(t);
+          bSerial.println();
+          count++;
+          if (count > 30){
+            delay(300);
+            count = 0;
+          }
+        }
+        break;
+      case 'S':
+        bSerial.println("S");
+        sendMess();
+        break;
+      case 'H':
+        bSerial.println("H set");
+        AVC_OUT_EN;
+        OUTPUT_SET_1;
+        break;
+      case 'L':
+        bSerial.println("L set");
+        AVC_OUT_EN;
+        OUTPUT_SET_0;
+        break;
+      case 'D':
+        bSerial.println("Out dis");
+        AVC_OUT_DIS;
+        break;
+    }
+  }
+}
+
+void sendMess(){
+      avclan.deviceAddress = 0x360;
+      avclan.broadcast = AVC_MSG_NORMAL;
+      avclan.masterAddress = 0x0360;
+      avclan.slaveAddress  = 0x0140;
+      avclan.dataSize      = 0x05;
+      avclan.message[0]    = 0x00;
+      avclan.message[1]    = 0x01;
+      avclan.message[2]    = 0x12;
+      avclan.message[2]    = 0x10;
+      avclan.message[3]    = 0x63;
+      byte res = avclan.sendMessage();
+      if (!res){
+        avclan.printMessage(false);
+      }else{
+        bSerial.print("W");
+        bSerial.printHex4(res);
+        bSerial.println();
+      }
+} 
+
+void LedOn(){
+  digitalWrite(ledPin, HIGH);
+}
+
+void LedOff(){
+  digitalWrite(ledPin, LOW);
+}
diff --git a/arduino/README.md b/arduino/README.md
new file mode 100644
index 0000000..8fe3c72
--- /dev/null
+++ b/arduino/README.md
@@ -0,0 +1,2 @@
+Sources from http://compcar.ru/forum/showthread.php?t=3959
+
diff --git a/arduino/libraries/AVCLanDrv/AVCLanDrv.cpp b/arduino/libraries/AVCLanDrv/AVCLanDrv.cpp
new file mode 100644
index 0000000..3899711
--- /dev/null
+++ b/arduino/libraries/AVCLanDrv/AVCLanDrv.cpp
@@ -0,0 +1,447 @@
+/*
+  AVCLanDrv.cpp v.01 - AVCLan Library for 'duino / Wiring
+  Created by Kochetkov Aleksey, 30.06.2009
+*/
+
+#include "AVCLanDrv.h"
+#include "BuffSerial.h"
+
+// AVCLan driver & timer2 init, 
+void AVCLanDrv::begin (){
+	// AVCLan TX+/TX- 	read line INPUT
+	cbi(DATAIN_DDR,  DATAIN);
+#ifdef AVCLAN_ST485
+	sbi(DATAIN_PORT, DATAIN);
+#else 
+	cbi(DATAIN_PORT, DATAIN);
+#endif
+
+	// AVCLan TX+/TX-		write line OUTPUT	
+#ifdef AVCLAN_RESISTOR
+	cbi(DATAOUT_DDR,  DATAOUT);
+	cbi(DATAOUT_PORT, DATAOUT);
+	cbi(ADCSRB, ACME);	// Analog Comparator Multiplexer Enable - NO
+	cbi(ACSR, ACIS1);	// Analog Comparator Interrupt Mode Select
+	cbi(ACSR, ACIS0);  // Comparator Interrupt on Output Toggle
+	cbi(ACSR, ACD); 	// Analog Comparator Disbale - NO
+#else 
+	sbi(DATAOUT_DDR,  DATAOUT);
+	sbi(OUTEN_DDR,  OUTEN);
+	AVC_OUT_DIS;
+	OUTPUT_SET_0;
+#endif
+	// timer2 setup, prescaler factor - 8
+#if defined(__AVR_ATmega8__)
+//	ASSR=0x00;
+	TCCR2=0x02;
+//	TCNT2=0x00;
+//	OCR2=0x00;
+#else   // ATMega168
+//	ASSR=0x00;
+//	TCCR2A=0x00;
+	TCCR2B=0x02;
+//	TCNT2=0x00;
+//	OCR2A=0x00;
+//	OCR2B=0x00;
+#endif
+	deviceAddress = 0x0000;
+}
+
+// Reads specified number of bits from the AVCLan.
+// nbBits (byte) -> Number of bits to read.
+// Return (word) -> Data value read.
+word AVCLanDrv::readBits (byte nbBits){
+	word data  = 0;
+	_parityBit = 0;
+	
+	while (nbBits-- > 0){
+		// Insert new bit
+		data <<= 1;
+		// Wait until rising edge of new bit.
+		while (INPUT_IS_CLEAR){
+			// Reset watchdog.
+			//wdt_reset();
+		}
+
+		// Reset timer to measure bit length.
+		TCNT2 = 0;
+		// Wait until falling edge.
+		while (INPUT_IS_SET);
+		// Compare half way between a '1' (20 us) and a '0' (32 us ): 32 - (32 - 20) /2 = 26 us
+		if (TCNT2 < AVC_BIT_0_HOLD_ON_MIN_LENGTH){
+			// Set new bit.
+			data |= 0x0001;
+			// Adjust parity.
+			_parityBit = ! _parityBit;
+		}
+	}
+	return data;
+}
+
+// Read incoming messages on the AVCLan.
+// Return true if success.
+byte AVCLanDrv::readMessage (){
+	uint8_t t = 0;
+	uint8_t oldSREG = SREG;
+	cli();             // disable interrupts
+
+	// Start bit.
+	while (INPUT_IS_CLEAR);
+	TCCR2B=0x03;      // prescaler 32
+	TCNT2 = 0;
+	// Wait until falling edge.
+	while (INPUT_IS_SET){
+		t = TCNT2;
+		if (t > 0xFF) {
+			SREG = oldSREG;
+			return 1;
+		}
+	}
+	TCCR2B=0x02;      // prescaler 8
+	
+	if (t < AVC_START_BIT_HOLD_ON_MIN_LENGTH){
+	//if (t < 0x16){
+			SREG = oldSREG;
+			return 2;
+	}
+
+	broadcast = readBits(1);
+
+	masterAddress = readBits(12);
+	bool p = _parityBit;
+	if (p != readBits(1)){
+		SREG = oldSREG;
+		return 3;
+	}
+  
+	slaveAddress = readBits(12);       
+	p = _parityBit;
+	if (p != readBits(1)){
+		SREG = oldSREG;
+		return 4;
+	}
+
+	bool forMe = ( slaveAddress == deviceAddress );
+
+	if (forMe){
+		// Send ACK.
+		send1BitWord(0);
+	}else{  
+		readBits(1);
+	}
+
+	// Control 
+	readBits(4);
+	p = _parityBit;
+	if (p != readBits(1)){
+		SREG = oldSREG;
+		return 5;
+	}
+
+	if (forMe){
+		// Send ACK.
+		send1BitWord(0);
+	}else{  
+		readBits(1);
+	}
+
+	dataSize = readBits(8);
+	p = _parityBit;
+	if (p != readBits(1)){
+		SREG = oldSREG;
+		return 6;
+	}
+
+	if (forMe){
+		// Send ACK.
+		send1BitWord(0);
+	}else{  
+		readBits(1);
+	}
+	if (dataSize > AVC_MAXMSGLEN){
+		SREG = oldSREG;
+		return 7;
+	}
+	byte i;
+	for (i = 0; i < dataSize; i++ ){
+		message[i] = readBits(8);
+		p = _parityBit;
+		if (p != readBits(1)){
+			SREG = oldSREG;
+			return 8;
+		}
+
+		if (forMe){
+			// Send ACK.
+			send1BitWord(0);
+		}else{  
+			readBits(1);
+		}
+	}
+	SREG = oldSREG;
+	return 0;   
+}
+
+// Send a start bit to the AVCLan
+void AVCLanDrv::sendStartBit (){
+	// Reset timer to measure bit length.
+	TCCR2B=0x03;      // prescaler 32
+	TCNT2 = 0;
+	OUTPUT_SET_1;
+
+	// Pulse level high duration.
+	while ( TCNT2 < AVC_START_BIT_HOLD_ON_LENGTH );
+	OUTPUT_SET_0;
+
+	// Pulse level low duration until ~185 us.
+	while ( TCNT2 < AVC_START_BIT_LENGTH );
+	TCCR2B=0x02;      // prescaler 8
+
+}
+
+// Send a 1 bit word to the AVCLan
+void AVCLanDrv::send1BitWord (bool data){
+	// Reset timer to measure bit length.
+	TCNT2 = 0;
+	OUTPUT_SET_1;
+
+	if (data){
+		while (TCNT2 < AVC_BIT_1_HOLD_ON_LENGTH);
+	}else{
+		while (TCNT2 < AVC_BIT_0_HOLD_ON_LENGTH);
+	}
+
+	OUTPUT_SET_0;
+	while (TCNT2 <  AVC_NORMAL_BIT_LENGTH);
+}
+
+// Send a 4 bit word to the AVCLan
+void AVCLanDrv::send4BitWord (byte data){
+	_parityBit = 0;
+
+	// Most significant bit out first.   
+	for ( char nbBits = 0; nbBits < 4; nbBits++ ){
+		// Reset timer to measure bit length.
+		TCNT2 = 2;
+		OUTPUT_SET_1;
+
+		if (data & 0x8){
+			// Adjust parity.
+			_parityBit = ! _parityBit;
+			while ( TCNT2 < AVC_BIT_1_HOLD_ON_LENGTH );
+		}else{
+			while ( TCNT2 < AVC_BIT_0_HOLD_ON_LENGTH );
+		}
+
+		OUTPUT_SET_0;
+		// Hold output low until end of bit.
+		while ( TCNT2 < AVC_NORMAL_BIT_LENGTH );
+
+		// Fetch next bit.
+		data <<= 1;
+	}
+}
+
+// Send a 8 bit word to the AVCLan
+void AVCLanDrv::send8BitWord (byte data){
+	_parityBit = 0;
+
+	// Most significant bit out first.   
+	for ( char nbBits = 0; nbBits < 8; nbBits++ ){
+		// Reset timer to measure bit length.
+		TCNT2 = 2;
+		OUTPUT_SET_1;
+
+		if (data & 0x80){
+			// Adjust parity.
+			_parityBit = ! _parityBit;
+			while ( TCNT2 < AVC_BIT_1_HOLD_ON_LENGTH );
+		}else{
+			while ( TCNT2 < AVC_BIT_0_HOLD_ON_LENGTH );
+		}
+
+		OUTPUT_SET_0;
+		// Hold output low until end of bit.
+		while ( TCNT2 < AVC_NORMAL_BIT_LENGTH );
+
+		// Fetch next bit.
+		data <<= 1;
+	}
+}
+
+// Send a 12 bit word to the AVCLan
+void AVCLanDrv::send12BitWord (word data){
+	_parityBit = 0;
+
+	// Most significant bit out first.   
+	for ( char nbBits = 0; nbBits < 12; nbBits++ ){
+		// Reset timer to measure bit length.
+		TCNT2 = 2;
+		OUTPUT_SET_1;
+
+		if (data & 0x0800){
+			// Adjust parity.
+			_parityBit = ! _parityBit;
+			while ( TCNT2 < AVC_BIT_1_HOLD_ON_LENGTH );
+		}else{
+			while ( TCNT2 < AVC_BIT_0_HOLD_ON_LENGTH );
+		}
+
+		OUTPUT_SET_0;
+		// Hold output low until end of bit.
+		while ( TCNT2 < AVC_NORMAL_BIT_LENGTH );
+
+		// Fetch next bit.
+		data <<= 1;
+	}
+}
+
+//  determine whether the bus is free (no tx/rx).
+//  return TRUE is bus is free.
+bool AVCLanDrv::isAvcBusFree (void){
+	// Reset timer.
+	TCNT2 = 0;
+
+	while (INPUT_IS_CLEAR){
+		// We assume the bus is free if anything happens for the length of 1 bit.
+		if (TCNT2 > AVC_NORMAL_BIT_LENGTH){   
+			return true;
+		}
+	}
+    
+	return false;
+}
+
+// reads the acknowledge bit the AVCLan
+// return TRUE if ack detected else FALSE.
+bool AVCLanDrv::readAcknowledge (void){
+	// The acknowledge pattern is very tricky: the sender shall drive the bus for the equivalent
+	// of a bit '1' (20 us) then release the bus and listen. At this point the target shall have
+	// taken over the bus maintaining the pulse until the equivalent of a bit '0' (32 us) is formed.
+
+	// Reset timer to measure bit length.
+	TCNT2 = 0;
+	OUTPUT_SET_1;
+
+	// Generate bit '0'.
+	while (TCNT2 < AVC_BIT_1_HOLD_ON_LENGTH);
+	OUTPUT_SET_0;
+	
+	AVC_OUT_DIS;
+	
+	while (TCNT2 < AVC_BIT_1_HOLD_ON_LENGTH + AVC_1U_LENGTH);
+	// Measure final resulting bit.
+	while ( INPUT_IS_SET );
+
+	// Sample half-way through bit '0' (26 us) to detect whether the target is acknowledging.
+	if (TCNT2 > AVC_BIT_0_HOLD_ON_MIN_LENGTH){
+		// Slave is acknowledging (ack = 0). Wait until end of ack bit.
+		while (INPUT_IS_SET );
+		AVC_OUT_EN;
+		return true;
+	}
+
+	// No sign of life on the bus.
+	return false;    
+}
+
+// sends ack bit if I am broadcasting otherwise wait and return received ack bit.
+// return FALSE if ack bit not detected.
+bool AVCLanDrv::handleAcknowledge (void){
+	if (broadcast == AVC_MSG_BROADCAST){   
+		// Acknowledge.    
+		send1BitWord(0);
+		return true;
+	}
+
+	// Return acknowledge bit.
+	return readAcknowledge();
+} 
+
+// sends the message in global registers on the AVC LAN bus.
+// return TRUE if successful else FALSE.
+byte AVCLanDrv::sendMessage (void){  
+	uint8_t oldSREG = SREG;
+	cli();             // disable interrupts
+	while (!isAvcBusFree());
+	
+	AVC_OUT_EN;
+	
+	// Send start bit.
+	sendStartBit();
+
+	// Broadcast bit.
+	send1BitWord(broadcast);
+
+	// Master address = me.
+	send12BitWord(masterAddress);
+	send1BitWord(_parityBit);
+
+	// Slave address = head unit (HU).
+	send12BitWord(slaveAddress);
+	send1BitWord(_parityBit);
+	if (!handleAcknowledge()){
+		AVC_OUT_DIS;
+		SREG = oldSREG;
+		return 1;
+	}
+
+	// Control flag + parity.
+	send4BitWord(AVC_CONTROL_FLAGS);
+	send1BitWord(_parityBit);
+	if (!handleAcknowledge()){
+		AVC_OUT_DIS;
+		SREG = oldSREG;
+		return 2;
+	}
+
+	// Data length + parity.
+	send8BitWord(dataSize);
+	send1BitWord(_parityBit);
+	if (!handleAcknowledge()){
+		AVC_OUT_DIS;
+		SREG = oldSREG;
+		return 3;
+	}
+
+	for (byte i = 0; i < dataSize; i++){
+		send8BitWord(message[i]);
+		send1BitWord(_parityBit);
+		if (!handleAcknowledge()){
+			AVC_OUT_DIS;
+			SREG = oldSREG;
+			return false;
+		}
+	}
+	AVC_OUT_DIS;
+	SREG = oldSREG;
+	return 0;
+}
+
+// print message to serial
+void AVCLanDrv::printMessage(bool incoming){
+	if (incoming){
+		bSerial.print("< ");
+	}else{
+		bSerial.print("> ");
+	}  
+	if (broadcast == AVC_MSG_BROADCAST){
+		bSerial.print("b ");
+	}else{ 
+		bSerial.print("d ");
+	}
+	bSerial.printHex4(masterAddress >> 8);
+	bSerial.printHex8(masterAddress);
+	bSerial.print(" ");
+
+	bSerial.printHex4(slaveAddress >> 8);
+	bSerial.printHex8(slaveAddress);
+	bSerial.print(" ");
+	bSerial.printHex8(dataSize);
+
+	for (byte i = 0; i < dataSize; i++){
+		bSerial.printHex8(message[i]);
+	}
+	bSerial.println(); 
+
+}
diff --git a/arduino/libraries/AVCLanDrv/AVCLanDrv.h b/arduino/libraries/AVCLanDrv/AVCLanDrv.h
new file mode 100644
index 0000000..3cd5a49
--- /dev/null
+++ b/arduino/libraries/AVCLanDrv/AVCLanDrv.h
@@ -0,0 +1,108 @@
+/*
+  AVCLanDrv.h v.01 - AVCLan Library for 'duino / Wiring
+  Created by Kochetkov Aleksey, 30.06.2009
+*/
+
+#ifndef AVCLanDrv_h
+#define AVCLanDrv_h
+
+#include "WProgram.h"
+#include "config.h"
+
+#ifdef AVCLAN_RESISTOR
+// avclan driver on resistor
+#define INPUT_IS_SET   (ACSR & _BV(ACO))
+#define INPUT_IS_CLEAR (!(ACSR & _BV(ACO)))
+#define OUTPUT_SET_1   sbi(PORTD, DATAOUT);
+#define OUTPUT_SET_0   cbi(PORTD, DATAOUT);
+#define AVC_OUT_EN     sbi(PORTD, DATAOUT); sbi(DDRD, DATAOUT);  sbi(DDRD, DATAIN); sbi(ACSR, ACD); 
+#define AVC_OUT_DIS    cbi(PORTD, DATAOUT); cbi(DDRD, DATAOUT);  cbi(DDRD, DATAIN); cbi(ACSR, ACD);
+#else
+#ifdef AVCLAN_ST485
+// avclan driver on ST485
+#define INPUT_IS_SET   (bit_is_clear(DATAIN_PIN, DATAIN))
+#define INPUT_IS_CLEAR (bit_is_set(DATAIN_PIN, DATAIN))
+#define OUTPUT_SET_1   (cbi(DATAOUT_PORT, DATAOUT));
+#define OUTPUT_SET_0   (sbi(DATAOUT_PORT, DATAOUT));
+#define AVC_OUT_EN     (sbi(OUTEN_PORT, OUTEN));; 
+#define AVC_OUT_DIS    (cbi(OUTEN_PORT, OUTEN));;
+#else
+//avclan driver on PCA82C250 & LM239N
+#define INPUT_IS_SET   (bit_is_set(DATAIN_PIN, DATAIN))
+#define INPUT_IS_CLEAR (bit_is_clear(DATAIN_PIN, DATAIN))
+#define OUT_SET_1      (cbi(DATAOUT_PORT, DATAOUT));
+#define OUT_SET_0      (sbi(DATAOUT_PORT, DATAOUT));
+#define AVC_OUT_EN     ; 
+#define AVC_OUT_DIS    ;
+#endif
+#endif
+
+#define AVC_NORMAL_BIT_LENGTH           	0x4A  // 37 * (F_CPU / 1000000L / 8) 
+#define AVC_BIT_1_HOLD_ON_LENGTH			0x28  // 20 uS * (F_CPU / 1000000L / 8) 
+#define AVC_BIT_0_HOLD_ON_LENGTH			0x40  // 32 uS * (F_CPU / 1000000L / 8)
+//#define AVC_BIT_0_HOLD_ON_MIN_LENGTH		0x34  // 26 uS * (F_CPU / 1000000L / 8)    Compare half way between a '1' (20 us) and a '0' (32 us ): 32 - (32 - 20) /2 = 26 us
+#define AVC_BIT_0_HOLD_ON_MIN_LENGTH		0x3C  // 30 uS * (F_CPU / 1000000L / 8)    Compare half way between a '1' (20 us) and a '0' (32 us ): 32 - (32 - 20) /2 = 26 us
+#define AVC_START_BIT_LENGTH				0x5D  // 186 uS  * (F_CPU / 1000000L / 32) ,  prescaler 32
+#define AVC_START_BIT_HOLD_ON_LENGTH		0x54  // 168 uS * (F_CPU / 1000000L / 32)    prescaler 32
+#define AVC_START_BIT_HOLD_ON_MIN_LENGTH	0x16  // 44 uS * (F_CPU / 1000000L / 32)      grater that AVC_NORMAL_BIT_LENGTH,  prescaler 32
+#define AVC_1U_LENGTH	                    0x02  // 1 uS * (F_CPU / 1000000L / 8)      
+
+#define AVC_MAXMSGLEN		32
+#define AVC_CONTROL_FLAGS	0xF
+
+typedef enum
+{   // No this is not a mistake, broadcast = 0!
+    AVC_MSG_NORMAL    = 1,
+    AVC_MSG_BROADCAST = 0
+} AvcTransmissionMode;
+
+typedef enum
+{
+    ACT_NONE,
+    
+    // ACT_AUX_IN_USE,
+    // ACT_TUNER_IN_USE,
+    // ACT_TAPE_IN_USE,
+    // ACT_CD_IN_USE,
+    
+    // ACT_EJECT_CD,
+    // ACT_NO_CD,
+    
+    // ACT_STATUS,    
+    // ACT_REGISTER,
+    // ACT_INIT,    
+    // ACT_CHECK
+} AvcActionID;
+
+#ifndef cbi
+#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
+#endif
+#ifndef sbi
+#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
+#endif
+
+class AVCLanDrv{
+	public:
+		bool	broadcast;
+		word	masterAddress;
+		word	slaveAddress;
+		word	deviceAddress;
+		byte	dataSize;
+		byte	message[AVC_MAXMSGLEN];
+		void	begin ();
+		byte	readMessage ();
+		byte	sendMessage (void);
+		void 	printMessage(bool incoming);
+		bool	isAvcBusFree (void);
+	private:
+		bool	_parityBit;
+		word	readBits (byte nbBits);
+		void	sendStartBit (void);
+		void	send1BitWord (bool data);
+		void	send4BitWord (byte data);
+		void	send8BitWord (byte data);
+		void	send12BitWord (word data);
+		bool	readAcknowledge (void);
+		bool	handleAcknowledge (void);
+};
+#endif
diff --git a/arduino/libraries/AVCLanDrv/WProgram.h b/arduino/libraries/AVCLanDrv/WProgram.h
new file mode 100644
index 0000000..c45168e
--- /dev/null
+++ b/arduino/libraries/AVCLanDrv/WProgram.h
@@ -0,0 +1,31 @@
+#ifndef WProgram_h
+#define WProgram_h
+
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include <avr/interrupt.h>
+
+#include "Arduino.h"
+
+#ifdef __cplusplus
+#ifndef BuffSerial_h
+#include "HardwareSerial.h"
+#endif
+
+uint16_t makeWord(uint16_t w);
+uint16_t makeWord(byte h, byte l);
+
+#define word(...) makeWord(__VA_ARGS__)
+
+unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout = 1000000L);
+
+// WMath prototypes
+long random(long);
+long random(long, long);
+void randomSeed(unsigned int);
+long map(long, long, long, long, long);
+#endif
+
+#endif
diff --git a/arduino/libraries/AVCLanDrv/config.h b/arduino/libraries/AVCLanDrv/config.h
new file mode 100644
index 0000000..92d8d7a
--- /dev/null
+++ b/arduino/libraries/AVCLanDrv/config.h
@@ -0,0 +1,43 @@
+/*
+  config.h  - AVCLan driver config
+  Created by Kochetkov Aleksey, 30.06.2009
+*/
+
+// type of AVCLan hardwire driver
+#define AVCLAN_ST485
+//#define AVCLAN_PCA82C250
+//#define AVCLAN_RESISTOR
+
+#ifdef AVCLAN_ST485
+// define out pin (pin 11 arduino) for ST485
+#define DATAOUT_DDR		DDRB
+#define DATAOUT_PORT	PORTB
+#define	DATAOUT_PIN		PINB
+#define DATAOUT			3
+
+// define out control pin (pin 10 arduino) for ST485
+#define OUTEN_DDR	DDRB
+#define OUTEN_PORT	PORTB
+#define	OUTEN_PIN	PINB
+#define OUTEN		2
+
+// define in pin (pin 9 arduino) for ST485
+#define DATAIN_DDR	DDRB
+#define DATAIN_PORT	PORTB
+#define	DATAIN_PIN	PINB
+#define DATAIN		1
+#endif
+
+// define out pin (pin 6 arduino) for AVCLAN_RESISTOR
+// #define DATAOUT_DDR		DDRD
+// #define DATAOUT_PORT	PORTD
+// #define	DATAOUT_PIN		PIND
+// #define DATAOUT			6
+
+// define in pin (pin 7 arduino) for AVCLAN_RESISTOR
+// #define DATAIN_DDR	DDRD
+// #define DATAIN_PORT	PORTD
+// #define	DATAIN_PIN	PIND
+// #define DATAIN		7
+
+
diff --git a/arduino/libraries/BuffSerial/BuffSerial.cpp b/arduino/libraries/BuffSerial/BuffSerial.cpp
new file mode 100644
index 0000000..fb2e1cf
--- /dev/null
+++ b/arduino/libraries/BuffSerial/BuffSerial.cpp
@@ -0,0 +1,163 @@
+/*
+  BuffSerial.cpp v.01 - serial with transmit buffer library for Wiring
+  Created by Kochetkov Aleksey, 03.07.2009
+*/
+#include <stdio.h>
+
+#include "BuffSerial.h"
+
+// serial init
+void BuffSerial::begin(long speed){
+#if defined(__AVR_ATmega8__)
+	UCSRB = _BV(RXCIE) | _BV(RXEN) | _BV(TXCIE) | _BV(TXEN);   // enable rx, tx inerrputs
+	UBRRH = ((F_CPU / 16 + speed / 2) / speed - 1) >> 8;       // usart speed
+	UBRRL = ((F_CPU / 16 + speed / 2) / speed - 1);
+#else
+	UCSR0B = (_BV(RXCIE0) | _BV(RXEN0) | _BV(TXCIE0) | _BV(TXEN0));  // enable rx, tx inerrputs
+	UBRR0H = ((F_CPU / 16 + speed / 2) / speed - 1) >> 8;            // usart speed
+	UBRR0L = ((F_CPU / 16 + speed / 2) / speed - 1);
+#endif
+	rxBegin = rxEnd = 0;
+	txBegin = txEnd = txOverflow = 0;
+	txFull  = 0;
+}
+
+//USART Rx Complete
+#if defined(__AVR_ATmega8__)
+SIGNAL(SIG_UART_RECV)
+#else
+SIGNAL(USART_RX_vect)
+#endif
+{
+#if defined(__AVR_ATmega8__)
+	bSerial.rxBuffer[bSerial.rxEnd] = UDR;
+#else
+	bSerial.rxBuffer[bSerial.rxEnd] = UDR0;
+#endif
+	if (bSerial.rxEnd < RX_BUFF_SIZE) bSerial.rxEnd++;
+}
+
+//USART Tx Complete
+#if defined(__AVR_ATmega8__)
+SIGNAL(SIG_UART_TRANS)
+#else
+SIGNAL(USART_TX_vect)
+#endif
+{
+	if (bSerial.txEnd != bSerial.txBegin || bSerial.txFull != 0){
+#if defined(__AVR_ATmega8__)
+		UDR  = bSerial.txBuffer[bSerial.txBegin];  // Send buffer
+#else
+		UDR0 = bSerial.txBuffer[bSerial.txBegin];  // Send buffer
+#endif
+		bSerial.txFull = 0;
+		bSerial.txBegin++;
+		if (bSerial.txBegin == TX_BUFF_SIZE) bSerial.txBegin = 0;
+	}
+
+}
+
+// send byte to serial or buffer if bisy
+void BuffSerial::sendByte(uint8_t data){
+	if (txFull){
+		txOverflow++;
+	}else{
+		uint8_t oldSREG = SREG;
+		cli();
+#if defined(__AVR_ATmega8__)
+		if (txEnd != txBegin || (UCSRA & _BV(UDRE)) == 0){
+#else
+		if (txEnd != txBegin || (UCSR0A & _BV(UDRE0)) == 0){
+#endif
+			txBuffer[txEnd] = data;
+			txEnd++;
+			if (txEnd == TX_BUFF_SIZE) txEnd = 0;
+			if (txEnd == txBegin) txFull = 1;          // buffer overflow
+		}else{
+#if defined(__AVR_ATmega8__)
+			UDR  = data;
+#else
+			UDR0 = data; 
+#endif
+		}
+		SREG = oldSREG;
+	}
+}
+
+// print string
+void BuffSerial::print(const char *pBuf){
+	while (*pBuf)	{
+		sendByte(*pBuf++);
+	}
+}
+
+void BuffSerial::print(const char pBuf){
+	sendByte(pBuf);
+}
+
+
+void BuffSerial::println(const char *pBuf){
+	print(pBuf);
+	println();
+}
+
+void BuffSerial::println(const char pBuf){
+	print(pBuf);
+	println();
+}
+
+void BuffSerial::println(void){
+	print("\r\n");
+}
+
+void BuffSerial::printHex4(uint8_t data){
+	uint8_t c = data & 0x0f;
+	c += c < 10 ? '0' : 'A' - 10 ;
+	sendByte(c);
+}
+
+void BuffSerial::printHex8(uint8_t data){
+    printHex4(data >> 4);
+    printHex4(data);
+} 
+
+void BuffSerial::printDec(uint8_t data){
+	uint8_t buf[3]; 
+	uint8_t i = 0;
+	if (data == 0){
+		sendByte('0');
+		return;
+	} 
+
+	while (data > 0){
+		buf[i++] = data % 10;
+		data /= 10;
+	}
+	for (; i > 0; i--)
+		sendByte((buf[i - 1] < 10 ? '0' + buf[i - 1] : 'A' + buf[i - 1] - 10));
+}
+
+// check rx buffer not empty
+bool BuffSerial::rxEnabled(void){  
+	return rxEnd;
+}
+
+uint8_t BuffSerial::rxRead(void){
+#if defined(__AVR_ATmega8__)
+	cbi(UCSRB, RXCIE);                           // disable RX complete interrupt
+#else
+	cbi(UCSR0B, RXCIE0);                         // disable RX complete interrupt
+#endif
+	uint8_t readkey = rxBuffer[rxBegin];         // read begin of received Buffer
+	rxBegin++;
+	if (rxBegin == rxEnd) rxBegin = rxEnd = 0;   // if Buffer is empty reset Buffer
+#if defined(__AVR_ATmega8__)
+	sbi(UCSRB, RXCIE);                           // enable RX complete interrupt
+#else
+	sbi(UCSR0B, RXCIE0);                         // enable RX complete interrupt
+#endif
+
+	return readkey;
+}
+
+BuffSerial bSerial;
diff --git a/arduino/libraries/BuffSerial/BuffSerial.h b/arduino/libraries/BuffSerial/BuffSerial.h
new file mode 100644
index 0000000..bc98022
--- /dev/null
+++ b/arduino/libraries/BuffSerial/BuffSerial.h
@@ -0,0 +1,49 @@
+/*
+  BuffSerial.h v.01 - serial with transmit buffer library for Wiring
+  Created by Kochetkov Aleksey, 03.07.2009
+*/
+
+#ifndef BuffSerial_h
+#define BuffSerial_h
+
+#include "WProgram.h"
+
+#define TX_BUFF_SIZE		240               // max 65535 
+#define RX_BUFF_SIZE		25                // max 255
+#define TX_BUFF_MAX_LEN		TX_BUFF_SIZE - 1
+
+#ifndef cbi
+#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
+#endif
+#ifndef sbi
+#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
+#endif
+
+class BuffSerial{
+	public:
+		uint8_t		rxBuffer[RX_BUFF_SIZE];
+		uint8_t		rxBegin;
+		uint8_t		rxEnd;
+		uint8_t		txBuffer[TX_BUFF_SIZE];
+		uint16_t	txBegin;
+		uint16_t	txEnd;
+		uint8_t		txFull;
+		uint16_t	txOverflow;
+		void		begin(long);
+		void 		sendByte(uint8_t);
+		void		print(const char*);
+		void		print(const char);
+		void		println(const char*);
+		void		println(const char);
+		void		println(void);
+		void		printHex4(uint8_t);
+		void		printHex8(uint8_t);
+		void		printDec(uint8_t);
+		bool		rxEnabled(void);
+		uint8_t		rxRead(void);	
+};
+
+extern BuffSerial bSerial;
+
+#endif
+