#define in1 2//Motor1  ON 
#define in2 15//Motor1  OFF 
#define in3 13 //Motor2  OFF 
#define in4 12//Motor2  ON 

void setup (){
  pinMode (in1,OUTPUT);
  pinMode (in2,OUTPUT);
  pinMode (in3,OUTPUT);
  pinMode (in4,OUTPUT);
}
void loop (){
  forward ();
  delay (1000);
  turnRight ();
  delay (1000);
  turnLeft ();
  delay (1000);
  stop ();
  delay (5000);
}
void forward (){//Maju 
  digitalWrite (in1 ,HIGH);//Right Motor forword Pin 
  digitalWrite (in2 ,LOW );//Right Motor forword Pin 
  digitalWrite (in3,LOW );//Left Motor forword Pin 
  digitalWrite (in4,HIGH);//Left Motor forword Pin 
}
void turnRight (){//Kanan 
  digitalWrite (in1,LOW );//Right Motor forword Pin 
  digitalWrite (in2,HIGH);//Right Motor backword Pin 
  digitalWrite (in3,LOW );//Left Motor backword Pin 
  digitalWrite (in4,HIGH );//Left Motor forword Pin 
}
void turnLeft (){//Kiri 
  digitalWrite (in1,HIGH);//Right Motor forword Pin 
  digitalWrite (in2,LOW );//Right Motor backword Pin
  digitalWrite (in3,HIGH);//Left Motor backword Pin 
  digitalWrite (in4,LOW );//Left Motor forword Pin 
}
void stop (){//stop 
  digitalWrite (in1,LOW );//Right Motor forword Pin 
  digitalWrite (in2,LOW );//Right Motor backword Pin 
  digitalWrite (in3,LOW );//Left Motor forword Pin 
  digitalWrite (in4,LOW );//Left Motor backword Pin 
}