L298N Motor Controller Example

L298N_example.ino

/*
 * Overview of L298N controller for Robotics
 * Controls how our robot moves.
 * Developed for the Beginner Bots lesson series on www.learnrobotics.org/blog
 * Written by Liz Miller
 * 11/16/18
 */

//Left Motor
 int enableA = 10;
 int motorA1 = 9;
 int motorA2 = 8;

//Right Motor
 int enableB = 5;
 int motorB3 = 7;
 int motorB4 = 6;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);

  pinMode(enableA, OUTPUT); //enabled + PWM
  pinMode(motorA1, OUTPUT);
  pinMode(motorA2, OUTPUT);

  pinMode(enableB, OUTPUT); //enabled + PWM
  pinMode(motorB1, OUTPUT);
  pinMode(motorB2, OUTPUT);

}

/*
 * Translate the truth table to create moves
 */
void forward(int mSpeed1,int mSpeed2, int duration){
  digitalWrite(enableA, HIGH);
  digitalWrite(enableB, HIGH);

  digitalWrite(motorA1, HIGH);
  digitalWrite(motorB1, HIGH);

  digitalWrite(motorA2, LOW);
  digitalWrite(motorB2, LOW);

  analogWrite(enableA, mSpeed1); //0-255
  analogWrite(enableB, mSpeed2); //0-255

  delay(duration);

}

void stopMotors(){
  digitalWrite(enableA, HIGH);
  digitalWrite(enableB, HIGH);

  digitalWrite(motorA1, LOW);
  digitalWrite(motorB1, LOW);

  digitalWrite(motorA2, LOW);
  digitalWrite(motorB2, LOW);
} 
 

void loop() {
  // put your main code here, to run repeatedly:
  foward(127, 127, 3000);
  stopMotors();

}