/*
  Project: L298N dual h-bridge motor driver module, 2 DC motors without speed control (constant maximum speed)
  Function: Both DC motors rotate to one direction then stop, rotate to another direction then stop.
*/
//************************************************************
int IN1 = 7;//input 1 of DC motor 1 attached to digital pin 7
int IN2 = 6;//input 2 of DC motor 1 attached to digital pin 6
int IN3 = 5;//input 3 of DC motor 2 attached to digital pin 5
int IN4 = 4;//input 4 of DC motor 2 attached to digital pin 4
//************************************************************
void setup()
{
  pinMode (IN1, OUTPUT);//sets IN1 as OUTPUT
  pinMode (IN2, OUTPUT);//sets IN2 as OUTPUT
  pinMode (IN3, OUTPUT);//sets IN3 as OUTPUT
  pinMode (IN4, OUTPUT);//sets IN4 as OUTPUT
}
void loop()
{
   //Both DC motors rotate one direction:
  digitalWrite (IN2, HIGH);
  digitalWrite (IN1, LOW);
  digitalWrite (IN4, HIGH);
  digitalWrite (IN3, LOW);
  delay(2000);//sets delay for 2 seconds
   //Both DC motors stops
  digitalWrite (IN2, LOW);
  digitalWrite (IN4, LOW);
  delay(4000);//sets delay for 4 seconds
  //Both DC motors rotate another direction:
  digitalWrite (IN1, HIGH);
  digitalWrite (IN2, LOW);
  digitalWrite (IN3, HIGH);
  digitalWrite (IN4, LOW);
  delay(2000);//sets delay for 2 seconds
  //Both DC motors stops
  digitalWrite (IN1, LOW);
  digitalWrite (IN3, LOW);
  delay(4000);//sets delay for 4 seconds
}