I do not understand the necessity for the preprogramming, but it's cool!
the dlay for detonation is set to the exact time it takes for the sequence to start and the single stack to finish. mess with the big stack and change the dlay temp to program it. Hope that helps.
yep, the stack in the back gets the returning signal from the laser when the photons bounce back and when it is sparked four times it sends a signal to the single stack in the middle.
Looks like a fun concept, is there a way of programing it?