Yeah, that's the issue I initially foresaw. I didn't try it but I know enough about non-realtime-OSes that I know it would not have worked consistently. Even on

Yeah, that's the issue I initially foresaw. I didn't try it but I know enough about non-realtime-OSes that I know it would not have worked consistently. Even on the Arduino, sometimes you have to change the timing a bit -- it's not exact. There _are_ RTOSes for the Raspberry Pi, but they may introduce their own problems. I don't mind having an Arduino or something smaller in there to handle the light stuff. Even if you want more control than the circular buffer implementation, it's incredibly simple to write a serial protocol to just individually address the bulbs. If you wanted to minify it, you could have an ATMega on a PCB with just the necessary components to use as a 'shield' of sorts for the Raspberry Pi.