motor.ino

// connect motor controller pins to Arduino digital pins
// motor left
int enA = 10;
int in1 = 9;
int in2 = 8;
// motor right
int enB = 5;
int in3 = 7;
int in4 = 6;

void setup()
{
  // set all the motor control pins to outputs
  pinMode(enA, OUTPUT);
  pinMode(enB, OUTPUT);
  pinMode(in1, OUTPUT);
  pinMode(in2, OUTPUT);
  pinMode(in3, OUTPUT);
  pinMode(in4, OUTPUT);
  // set speed to 200 out of possible range 0~255
  analogWrite(enA, 200);
  analogWrite(enB, 200);
}

void turnOff()
{
  digitalWrite(in1, LOW);
  digitalWrite(in2, LOW);
  digitalWrite(in3, LOW);
  digitalWrite(in4, LOW);
}

void leftWheelBack()
{
  digitalWrite(in1, LOW);
  digitalWrite(in2, HIGH);
}
void leftWheelGo()
{
  digitalWrite(in1, HIGH);
  digitalWrite(in2, LOW);
}
void rightWheelBack()
{
  digitalWrite(in3, HIGH);
  digitalWrite(in4, LOW);
}
void rightWheelGo()
{
  digitalWrite(in3, LOW);
  digitalWrite(in4, HIGH);
}

void turnRight()
{
  leftWheelBack();
  rightWheelGo();
}

void turnLeft()
{
  leftWheelGo();
  rightWheelBack();
}

void go()
{
  leftWheelGo();
  rightWheelGo();
}

void back()
{
  leftWheelBack();
  rightWheelBack();
}

void loop()
{
  delay(2000);
  go();
  delay(2000);
  back();
  delay(2000);
  turnRight();
  delay(2000);
  turnLeft();
  
}