Below you can see a “CIE1931 Fade” Arduino sketch by Tom Igoe (https://tigoe.github.io). The sketch takes input from a potentiometer and produces a fair LED fade, using the CIE1931 perceived lightness ...

Earlier this year we showed you a slick MIDI sequencer project that was constructed using an Arduino Mega, ... classic hacks, News Tagged 808, arduino LED array, follow up, sequencer, tetris. Search.

We set the potentiometer pin as 0 (A0 on the Arduino Uno board), the CONTROL variable is the voltage that is used to cotrol the led brightness of the speed of the fan. In the setup() function the ...