Arduino Button with LED

Turns on and off a LED when pressing a pushbutton

Mar 14, 2021

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Devices & Components

Arduino Uno Rev3

Pushbutton switch 12mm

Through Hole Resistor, 680 ohm

Jumper wires (generic)

Resistor 10k ohm

LED (generic)

Software & Tools

Arduino IDE

Project description

Code

ARDUINO BUTTON.ino

arduino

1const int buttonPin = 2;
2const int ledPin =  13;
3
4int buttonState   = 0;
5
6void setup()
7{
8  pinMode(ledPin, OUTPUT);
9  pinMode(buttonPin,   INPUT);
10}
11
12void loop()
13{
14  buttonState = digitalRead(buttonPin);
15
16   if (buttonState == HIGH)
17  {
18    digitalWrite(ledPin, HIGH);
19  } 
20   else
21  {
22    digitalWrite(ledPin, LOW);
23  }
24}
25

const int buttonPin = 2;
const int ledPin =  13;

int buttonState   = 0;

void setup()
{
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin,   INPUT);
}

void loop()
{
  buttonState = digitalRead(buttonPin);

   if (buttonState == HIGH)
  {
    digitalWrite(ledPin, HIGH);
  } 
   else
  {
    digitalWrite(ledPin, LOW);
  }
}

ARDUINO BUTTON.ino

arduino

1const int buttonPin = 2;
2const int ledPin =  13;
3
4int buttonState  = 0;
5
6void setup()
7{
8  pinMode(ledPin, OUTPUT);
9  pinMode(buttonPin,  INPUT);
10}
11
12void loop()
13{
14  buttonState = digitalRead(buttonPin);
15
16  if (buttonState == HIGH)
17  {
18    digitalWrite(ledPin, HIGH);
19  } 
20  else
21  {
22    digitalWrite(ledPin, LOW);
23  }
24}
25

const int buttonPin = 2;
const int ledPin =  13;

int buttonState  = 0;

void setup()
{
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin,  INPUT);
}

void loop()
{
  buttonState = digitalRead(buttonPin);

  if (buttonState == HIGH)
  {
    digitalWrite(ledPin, HIGH);
  } 
  else
  {
    digitalWrite(ledPin, LOW);
  }
}

Downloadable files

ARDUINO PUSHBUTTON with LED

The circuit diagram

ARDUINO PUSHBUTTON with LED

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MinukaThesathYapa

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