[Digital I/O]


Write a HIGH or a LOW value to a digital pin.

If the pin has been configured as an OUTPUT with pinMode(), its voltage will be set to the corresponding value: 3.3V for HIGH, 0V (ground) for LOW.


digitalWrite(pin, value)


pin: the pin number
valueHIGH or LOW



Example Code

int ledPin = 13;                // LED connected to digital pin 13
void setup()
  pinMode(ledPin, OUTPUT);      // sets the digital pin as output
void loop()
  digitalWrite(ledPin, HIGH);   // sets the LED on
  delay(1000);                  // waits for a second
  digitalWrite(ledPin, LOW);    // sets the LED off
  delay(1000);                  // waits for a second

Sets pin 13 to HIGH, makes a one-second-long delay, and sets the pin back to LOW.


Unlike Arduino, the analog input pins (referred to as A0, A1, etc) of 86Duino cannot be used as digital pins.

See also

Language Reference Home

The text of the 86Duino reference is a modification of the Arduino reference and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.

Leave a Comment

Scroll to Top