Using two air solenoids and an ATmega328 I was able to get my air motor up and running. The timing was a little touchy but I got it to work. This project is based off of one I saw over at Nuts and Volts. Next up, tuning the motor to get maximum efficiency. I also want to rewrite the algorithm to take target RPMs and calculate the necessary timing to get there.
As always the code can be found in google code.