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I used a teensy controller and arduino. and some mosfets. I used oshpark to print the board. I'm no hardware engineer but it works. basically I hard wired the 5 clutch solenoids, the park solenoids, the lockup solenoid, and the pressure solenoid each to a mosfet. I used the pwm feature from the teensy to vary the current to each solenoid. crude but it allows me to put full pressure to the clutch packs which i think is partly why i get away with putting so much power through it.
I'm a software guy so i thought it would be fun but at this stage i just manually shift it with an up shift and down shift switch. I'm playing with full auto but have no desire to compete with commercial stuff.
one of the awesome features of this tranny is that any shift is simply release one clutch, engage another one. I actually engage the shift clutch before i release the other clutch, it makes for a FIRM shift :) I lock up all of the clutches for a transbrake then release the 3 that give me the gear i want.
also, and it's pretty obvious in that video above, I use the lock up converter alot. the dyno pull was in 6th gear with locked converter.