Yeah, just a 5x4 charlieplex from an ATtiny85. Finally making a nice board version of something I'd previously done on perfboard because... Blinky! It's a little redundant since this summer's project was a 10x11 grid of LEDs with a clock & sensors, but I don't like bringing that to the office since I sold off the rest of the boards and it would be annoying to replace. This way I can have Conway's Life on my desk without worrying about someone having sticky fingers on an irreplaceable board.

- TinyLife.png (89.16 KiB) Viewed 324 times
(I need to genericize my gerbv output colors one of these days.)
I hadn't seen your GolGrid before, though (I think Hack A Day is saturated. :) ) - I like the planning that you're putting into your weeklies. There's something appealing about making a 5x5 array on the cheap with interboard communication from the ground up.
I'm finding myself making speculative boards just to spend time routing. It's soothing.