Listing 1 (syntax-coloured PDF) is a small Arduino program showing how to blink the three LEDs successively, turning a LED on solidly when the corresponding button is closed (plain text below). Of ...

You can control the brightness of these LEDs using variable resistors VR1, VR2 and VR3 respectively. Parts Needed. Arduino UNO board – 1 ; 5mm LEDs Red, Green, Blue – each 1 ; 100K Variable resistor – ...

There was a point in time, excruciatingly brief, in which desktop computers often had a large “TURBO” button on their front panel. Some even featured an LED display that would indicate … ...