3mm Red LED Module

Introduction

Linker LED Module is designed for the beginners of Arduino/pcDuino to monitor controls from digital ports. It can be mounted to the surface of your box or desk easily and used as pilot lamp for power or signal. Its brightness can be adjust by potentiometer.

Application Ideas

test <syntaxhighlight lang="c"> /*

 Blink
 Turns on an LED on for one second, then off for one second, repeatedly.

 This example code is in the public domain.
*/

void setup() {

 // initialize the digital pin as an output.
 pinMode(13, OUTPUT);     

}

void loop() {

 digitalWrite(13, HIGH);   // set the LED on
 delay(1000);              // wait for a second
 digitalWrite(13, LOW);    // set the LED off
 delay(1000);              // wait for a second

} </syntaxhighlight>