const int ledPin = 9; // Test LED wire to D9 void setup() { // Set the pin as a digital output pinMode(outputPin, ... // current light level int change = 1; // change each time you fade byte cie1931 .

You can fade out and fade in the light of an LED automatically by using Arduino and a simple code that is described below. Even though the Arduino board cannot output variable voltage on its digital ...

If you’ve ever wanted to make your own VU meter but were scared off by the signal process you need to study this tutorial. Hackaday Alum [Phil Burgess] developed the device using an RGB LED m… ...