The color organ board is mostly done, I haven't worked on it for a while, but the problem I am currently trying to overcome is an issue with the preamp.
I have tested the 3 PWM channels and they work.
I have tested the preamp, which is not passing the signal. [This is my current problem]
I have not tested the high-pass and low-pass filters
I have not built or prototyped the band-pass filter
I'm going to troubleshoot the preamp and see if I can get it working. More info when I have it.