IR receptor and motor

Projects General Guidance
1

Hello,
I'm trying to control a motor with an IR receptor, i use a l293d to control the motor. When i send my signal to start the motor, it works but if i try to stop it it doesn't, the arduino seems to receive no signal. Any explanations ?
Here is my code :

#include <IRremote.h>
#include <Servo.h> 

int RECV_PIN = 11;
IRrecv irrecv(RECV_PIN);
decode_results results;
Servo myservo;

int moteurAvant=3;

int etalonDroit=108;
int etalonGauche=48;
int etalonMilieu=78;

void setup()
{
  myservo.attach(9);
  Serial.begin(9600);
  irrecv.enableIRIn(); // Initialise le recepteur
}

void loop() {
  if (irrecv.decode(&results)) {
    if(results.value == 16748655){// +
      analogWrite(moteurAvant, 255);
      Serial.println("vitesse=1");
    }
    else if(results.value == 16754775){// -
      analogWrite(moteurAvant, 0);
      Serial.println("vitesse=0");
    }
    else if(results.value == 16761405){// droite
      Serial.println("droite");
      if(myservo.read()==etalonGauche){
        auMlieu();
      }
      else{
        aDroite();
      }
    }
    else if(results.value == 16712445){// gauche
      Serial.println("gauche");
      if(myservo.read()==etalonDroit){
        auMlieu();
      }
      else{
        aGauche();
      }
    }
    irrecv.resume(); // Recoit la valeur suivante
  }
}

void aDroite(){
    myservo.write(etalonDroit);  
}

void aGauche(){
    myservo.write(etalonGauche);  
}

void auMlieu(){
    myservo.write(etalonMilieu);  
}

For the motor wiring, i use something like this : http://api.ning.com/files/jFhR10F2nKDm5cJ0p2jcpgHpKd4hNPz01QgMS8OF6QUh82aIgvr-dp1uzQSopb*PQgSlhFEgj5ALhek3X56Zq6xDZuw-9vwD/l293dmontagem.jpeg

Thanks,
Jocelyn

2

Just an initial thought, have you tried to just switch an LED on and off with the code so that you can make sure that the issue isn't with the remote code?

When things don't work like this I usually break code down to show something simple to find that the required IF statements all work correctly.

You could also use the serial monitor to write something to it at each IF statement so you know that the statement is being dealt with properly.

3

Thanks, i've tried my code with a led and a computer fan, it works correctly. My problem appear only if i put my car's motor ...