/*
* Lesson 49: Introduction to L293D Motor driver | Arduino Step By Step Course

 * This is the Arduino code for the L293D DC motor driver.
Using this code, you can control a motor to rotate in one direction.

Watch the video explaining the L293D and this code: https://youtu.be/D4yLsWvZDw4

 *  * 
 // Written by Ahmad Shamshiri for Robojax Robojax.com on 
// January 26, 2019 at 08:01 in Ajax, Ontario, Canada

This code is available at http://robojax.com/course1/?vid=lecture49
 
with over 100 lectures free on YouTube. Watch it here: http://robojax.com/L/?id=338
Get the code for the course: http://robojax.com/L/?id=339  
 * on Saturday, November 24, 2018 
 * in Ajax, Ontario, Canada
 * 
 
 * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.
 * This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.

*/

#define MOTOR1 2 // define pin 2 as for MOTOR1
#define EN12 3// define pin 3 for EN1,2 

/*
 * Permission granted to share this code given that this
 * note is kept with the code.
 * Disclaimer: this code is "AS IS" and for educational purposes only.
 * 
 */

void setup() {
  // L293 Motor Control Code by Robojax.com 2018025
  Serial.begin(9600);// setup Serial Monitor to display information
  pinMode(MOTOR1, OUTPUT);// define pin as OUTPUT for MOTOR1
  pinMode(EN12, OUTPUT);// define pin as OUTPUT for EN12
  //digitalWrite(EN12, HIGH);// set EN12 pin HIGH
  
  // L293 Motor Control Code by Robojax.com 2018025   
}

void loop() {
  // L293 Motor Control Code by Robojax.com 2018025


    Serial.println(" Motor 1 ON");
    digitalWrite(MOTOR1,HIGH);// turn MOTOR1 ON
    
    analogWrite(EN12, 255);// run motor at (255 PWM value) maximum speed 
    delay(3000);//for 3 seconds

    analogWrite(EN12, 127);// run motor at half (125 PWM value) speed
    delay(5000);//for 3 seconds

    analogWrite(EN12, 95);// run motor at 80 PWM value
    delay(5000);//for 3 seconds
    
    digitalWrite(MOTOR1,LOW);// turn MOTOR1 OFF    
    Serial.println(" Motor 1 Stopped"); 
    delay(3000);// wait for 3 seconds


  // L293 Motor Control Code by Robojax.com 2018025 
}