Project 4 Infrared remote control smart car

1.Before the experiment

1. Place the function library IRremote into the Arduino libraries directory.

2. Open IrReceive.pde to acquire the code for your infrared remote control ( IRcode will be displayed in Serial Monitor), write down IRcode and modify it in your IR code in the program.

Code 5

/*
*IRRemote code test
*Example 1.2: display the type of IR protocol such as  NEC, Sony SIRC, Philips RC5, Philips RC6
*/

#include <IRremote.h>	// call IRRemote function library
const int irReceiverPin = 2;	// set pin 2 as IR receiver signal  OUTPUT
IRrecv irrecv(irReceiverPin);		// set  IRrecv to receive IR signal 
decode_results results;	//  decode result will be put into the variable of the result in the  decode_results

void setup()
{
    Serial.begin(9600);// set communication rate at  9600 bps 
    irrecv.enableIRIn();// start IR decoding
}

//  display the type of IR protocol
void showIRProtocol(decode_results *results)
{
    Serial.print("Protocol: ");
    // determine  the type of IR protocol 
    switch(results->decode_type) 
    { 
        case NEC:
        Serial.print("NEC"); break;
        case SONY: Serial.print("SONY"); break;
        case RC5: Serial.print("RC5"); break;
        case RC6: Serial.print("RC6"); break;
        default:
        Serial.print("Unknown encoding");
    }
    // serial print IR code to Serial port Serial.print(", irCode: ");
    Serial.print(results->value, HEX);	// IR code
    Serial.print(", bits: ");
    Serial.println(results->bits);	//  IR code bit
}

void loop()
{
    if (irrecv.decode(&results)) 
    {	//  finish decoding, receive IR signal 
        showIRProtocol(&results);// display the type of IR protocol
        irrecv.resume();// continue receiving IR signal coming next
    }
}

Replace the IR code in the IR control part program with the code from the test result IR remote control smart car program.

2.IR remote control smart car program

Code 6

#include <IRremote.h> 
int RECV_PIN = 2;
int pinLB=5;// define pin for I1
int pinLF=6;// define pin for I2
int pinRB=10;// define pin for I3
int pinRF=11;// define pin for I4
//******IR control part********
long advence = 0x00FF629D;
long back = 0x00FFA857;
long stop = 0x00FF02FD;
long left = 0x00FF22DD;
long right = 0x00FFC23D;
IRrecv irrecv(RECV_PIN);
decode_results results;

void dump(decode_results *results)
{ 
    int count = results->rawlen;
    if (results->decode_type == UNKNOWN)
    {
    	Serial.println("Could not decode message");
    }
    else
    {
        if (results->decode_type == NEC)
        {
        	Serial.print("Decoded NEC: ");
        }
        else if (results->decode_type == SONY)
        {
        	Serial.print("Decoded SONY: ");
        }
        else if (results->decode_type == RC5)
        {
        	Serial.print("Decoded RC5: ");
        }
        else if (results->decode_type == RC6)
        {
        	Serial.print("Decoded RC6: ");
        }
        Serial.print(results->value, HEX);
        Serial.print(" (");
        Serial.print(results->bits, DEC);
        Serial.println(" bits)");
    }
    Serial.print("Raw (");
    Serial.print(count, DEC);
    Serial.print("): ");
    for (int i = 0; i < count; i++)
    {
        if ((i % 2) == 1) 
        {
        	Serial.print(results->rawbuf[i]*USECPERTICK, DEC);
        }
        else
        {
        	Serial.print(-(int)results->rawbuf[i]*USECPERTICK, DEC);
        }
        Serial.print(" ");
    }
    Serial.println("");
}

void setup()
{
    pinMode(RECV_PIN, INPUT);
    pinMode(pinLB,OUTPUT); pinMode(pinLF,OUTPUT);
    pinMode(pinRB,OUTPUT); pinMode(pinRF,OUTPUT);
    Serial.begin(9600);
    irrecv.enableIRIn(); // Start the receiver
}

int on = 0;
unsigned long last = millis();

void loop()
{
    if (irrecv.decode(&results))
    {
    	// If it's been at least 1/4 second since the last
    	// IR received, toggle the relay 
        if (millis() - last > 250)
        {
            on = !on;
            // digitalWrite(8, on ? HIGH : LOW);
            digitalWrite(13, on ? HIGH : LOW);
            dump(&results);
        }
        if (results.value == advence )
        {
            digitalWrite(pinRB,LOW);// motor going right
            digitalWrite(pinRF,HIGH);
            digitalWrite(pinLB,LOW);// motor going left
            digitalWrite(pinLF,HIGH);
        }
        if (results.value == back )
        {
            digitalWrite(pinRB,HIGH);// motor going right and BACK
            digitalWrite(pinRF,LOW);
            digitalWrite(pinLB,HIGH);// motor going left and BACK
            digitalWrite(pinLF,LOW);
        }
        if (results.value == left )
        { 
            digitalWrite(pinRB,LOW);// motor going right and STOP
            digitalWrite(pinRF,HIGH);
            digitalWrite(pinLB,HIGH);// motor going left
            digitalWrite(pinLF,LOW);
        }
        if (results.value == right )
        { 
            digitalWrite(pinRB,HIGH);// motor going right
            digitalWrite(pinRF,LOW);
            digitalWrite(pinLB,HIGH);// motor going left and STOP
            digitalWrite(pinLF,HIGH);
        }
        if (results.value == stop )
        {
            digitalWrite(pinRB,HIGH);// motor going right and STOP
            digitalWrite(pinRF,HIGH);
            digitalWrite(pinLB,HIGH);// motor going left and STOP
            digitalWrite(pinLF,HIGH);
        }
        last = millis();
        irrecv.resume(); // Receive the next value
    }
}