Earlier this year we showed you a slick MIDI sequencer project that was constructed using an Arduino Mega, which also happened to drive an incredibly detailed touch screen display.

This is an easy tutorial showing how you can control the brightness of an LED or adjust the speed of a DC fan using Arduino Board, a small BC547 transistor and a potentiometer. In my example the whole ...

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 ...