Yesterday Kipras came with a schematic of a guitar fuzz effect he wanted to make. He left with a working prototype he’ll solder on a board the next week.

The view through a scope:

opit has started her first Arduino project – a sunrise simulator that might help to wake up during this dark season. She used a 14.4W LED strip, a 15W power supply, an Arduino Nano and an IRLZ34N transistor. 

A rough similar schematic can be found here. The Arduino code is a copypasta from here and here, and is available on Github.

The LED PWM values were generated by reusing this code that compensates for human eye non-linear brightness perception, as described by CIE 1931 formula.