Arduino Digital Switch Code

This is basic for your arduino projects, input switch read from digital input. When ever switch pressed, LED will turn on.

 

PushButton_arduino_code
PushButton_arduino_code

 

Instruction;
1) Connect cathode lead of LED (shorter lead) to ground pin and anode lead of LED (longer lead) to pin 13.

2) Add switch to breadboard, connect one of the switch lead to 5V pin.

3) Add 10kΩ resistor as in diagram and connect another switch lead to digital pin 2.

4) Connect GND to 10kΩ resistor.

Upload this code to your arduino

/*
  Digital Switch
  Reads a digital input on pin 2, when pressed LED light up.

  Coded by: arduinoprojects101.com
*/

void setup() {
  pinMode(2, INPUT);
  pinMode(13, OUTPUT);
}

void loop() {
  int switchValue = digitalRead(2);
  digitalWrite(13, switchValue);
}

pinMode(2, INPUT);
set digital pin 2 as input (from switch)

[box color=”#985D00″ bg=”#FFF8CB” font=”verdana” fontsize=”14 ” radius=”20 ” border=”#985D12″ float=”right” head=”Major Components in Project” headbg=”#FFEB70″ headcolor=”#985D00″]Parts List;
1) 1x Arduino
2) 1x 5mm red LED
3) 1x 10kΩ resistor
4) 1x Switch
5) Jumper wire[/box]

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