ATtiny13 + 8* 74hc595 Shift Registers. It have to modes: random matrix and binart counter. Code: https://github.com/taunoe/attiny13-shift-matrix
My third freeform electronic light sculpture. It runs on ATtiny13 and uses 5730 (5.7*3.0 mm) Worm White SMD LEDs.
I had a bunch of smd LEDs and no idea what to do with them. But then, when I had … More