Simple LED

Description

The simpleLED (src/main/java/com/pi4j/example/components) is a template class, that you can use in your own Java-project. You can take any LED you want to. Like for example this one: LED

The template Class gives you the option to switch off, switch on or toggle the state of the LED.

Layout

Code

A simple example on how to use the LED-Class from the Hardware-Catalog :

// Create a new SimpleLED component
SimpleLED led = new SimpleLED(pi4j, 26);

// Turn on the LED to have a defined state
led.setStateOn();
sleep(1000);

// Make a flashing light by toggling the LED every second
for (int i = 0; i < 10; i++) {
    System.out.println(led.toggleState());
    sleep(1000);
}

// That's all so turn off the relay and quit
led.setStateOff();
System.out.println("off");
sleep(2000);

Further application

The class is implemented in the two sample projects Theremin and Potobooth.

Further projetct ideas

• Use an infrared LED to establish communication with an infrared receiver.
• Use several red LEDs to recreate the running lights of KITT, the car from Knight Rider.