/*
 * Arduino Step by Step Course by Robojax
 * Lesson 09-b. LED with Push button
 * This code is turning on an LED when a push button is pressed. When the push button is released, the LED will turn OFF after delayLED time 
 * set in the code. 
 * 
 * Watch full details and demonstration: https://youtu.be/7xTHaFdCyaI
 * 
 * Start a full Arduino Step By Step course:  https://youtu.be/-6qSrDUA5a8

 * 
 * What parts we need:
 * -Of course Arduino board (UNO, Nano, Mega or any)
 * -Push button switch 
 * -LED either 5mm or 3mm
 * -200ohm to 1000 ohm resistor for LED
 * -Some dupont wires to connect
 * -If you don't want to solder, then use a breadboard
This video is part of Arduino Step by Step Course which starts here: https://youtu.be/-6qSrDUA5a8
 

If you found this tutorial helpful, please support me so I can continue creating 
content like this. Make a donation using PayPal by credit card https://bit.ly/donate-robojax
  
 * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.* 
 * This code has been downloaded from Robojax.com
    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/>.
 * written by Ahmad Shamshiri on Jan 27, 2022
 * in Ajax, Ontario, Canada
 * www.Robojax.com
 * 
 */
const int pushButtonPin = 2;//define a pin number for push button
const int LEDPin = 3;//define a pin that is connected to LED
const int delayLED = 3000;//how long the LED should stay ON

void setup() {
  pinMode(pushButtonPin, INPUT_PULLUP);//define a pin for push button switch
  pinMode(LEDPin, OUTPUT);//define a pin for LED

  Serial.begin(9600);//initialize the serial monitor
  Serial.println("Robojax LED with push button");//print this text on Serial Monitor

}

void loop() {
  //if push button is pressed, we will read LOW value
  if( digitalRead(pushButtonPin) == LOW)
  {
    digitalWrite(LEDPin, HIGH);//turn LEDpin HIGH to turn the LED ON
    Serial.println("LED ON");
    delay(delayLED);//keep it on for the delayLED time

    
  }else{
    digitalWrite(LEDPin, LOW);//else, turn the LED OFF
  }
// Watch full details and demonstration: https://youtu.be/7xTHaFdCyaI
}