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 https://youtu.be/3K996EfPiXM
This code is available at http://robojax.com/course1/?vid=lecture09
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
* Written by Ahmad Shamshiri for Robojax, robojax.com http:youTube.com/robojaxTV
* 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 http://robojax.com/L/?id=338
int pushButtonValue = digitalRead(2);
if(pushButtonValue == LOW)
{
Serial.println("Button pushed");
digitalWrite(8,HIGH);// turn ON the LED
}else{
//Serial.println("Button NOT pushed");
digitalWrite(8, LOW);// turn OFF the LED
}
delay(100);
}
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