// Provided by Robojax.com on Nov 25, 2019
// See video instructions for this video: https://youtu.be/JDgOYKo_zQ8
// www.elegoo.com

// Left motor truth table
// Here are some handy tables to show the various modes of operation.
// ENA         IN1               IN2         Description  
// LOW   Not Applicable    Not Applicable    Motor is off
// HIGH        LOW               LOW         Motor is stopped (brakes)
// HIGH        HIGH              LOW         Motor is on and turning forwards
// HIGH        LOW               HIGH        Motor is on and turning backwards
// HIGH        HIGH              HIGH        Motor is stopped (brakes)

// define IO pin
#define ENA 5 
#define IN1 7
#define IN2 8

// Initialize the car
void setup() {
  pinMode(IN1, OUTPUT);   // Set IO pin mode OUTPUT
  pinMode(IN2, OUTPUT);
  pinMode(ENA, OUTPUT);
  digitalWrite(ENA, HIGH);// Enable left motor       
}

// Main loop
void loop() {
  digitalWrite(IN1, HIGH);      
  digitalWrite(IN2, LOW); // Right wheel turning forwards
  delay(500);             // Delay 500ms
  digitalWrite(IN1, LOW);      
  digitalWrite(IN2, LOW); // Right wheel stopped
  delay(500);
  digitalWrite(IN1, LOW);      
  digitalWrite(IN2, HIGH);// Right wheel turning backwards
  delay(500);
  digitalWrite(IN1, HIGH);      
  digitalWrite(IN2, HIGH); // Right wheel stopped
  delay(500);
}