No, I'd like to be able to control the unused digital I/O to switch solid state relays, just as I said. It's an Atmega 328. The thing is an Arduino based controller. It already does pwm with sunrise/sunset ramps. I'd like to turn on my CO2 and some outlets without learning a programming language I'll probably never need again.
Also, it's someone's commercial product. I'm not going to put the code here. That's terribly impolite.
I think I was fairly clear with what I was asking.