I read an interesting post few months ago about a guy modding his motorcycle’s tail light so it is much more fancy. I had to try it out too 🙂 I have couple ATTiny85s lying around so in couple hours I had it all set:
I was thinking of actually puting the board in the tail light (hence the LEDs), but quickly realized I wanted to keep the original one as it is a dual one and also lights the license plate. So instead I connected the board to the spoiler’s LEDs. See it in action: