Simple LED

Description

The SimpleLed is a template class, that you can use in your own Java-project.

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

Layout

Simple LED Layout

Simple Led Breadboard

Simple Led Breadboard

Code

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

System.out.println("Simple LED app started ...");

// Create a new SimpleLED component
SimpleLed led = new SimpleLed(pi4j, PIN.D26);

// Turn on the LED to have a defined state
System.out.println("Turn on LED.");
led.on();
delay(1000);

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

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

System.out.println("Simple LED app done.");

Further application

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

Further project 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.