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Lesson 09: Using Switch and Push Buttons with Arduino

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We learn how a switch turns ON and OFF a bulb. We learn how to use push button or switch with resistor and without resistor with Arduino. Using INPUT_PULLUP has been explaiend.

 * S01-09 Push Button 
 * Written by Ahmad Shamshiri
 Please watch video instruction here
 This code is available at
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Get the code for the course: 
 * Written by Ahmad Shamshiri for Robojax,
 * on Dec 24, 2018 in Ajax, Ontario, Canada

void setup() {
  pinMode(2, INPUT);// define pin 2 as input
  Serial.begin(9600);// initialize the serial monitor
                     // with 9600 baud
  Serial.println("Push button Test");
  pinMode(8, OUTPUT);


void loop() {
		//Robojax Step By Step Arduino Course
 int pushButtonValue = digitalRead(2);
 if(pushButtonValue == LOW)
  Serial.println("Button pushed");
  digitalWrite(8,HIGH);// turn ON the LED
  //Serial.println("Button NOT pushed");
  digitalWrite(8, LOW);// turn OFF the LED


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