How the hell do I use bellows?
Connect it to a mechanical power source and create an alternating redstone current connected to one of the gearboxes
You can do this:
╔□□╗
□ □
□ □
╠□□╝
■where the double lines are redstone, □'s are Diodes (set the delay to the most), and ■ is the gearbox. Put a button on the wall next to any of the redstone, press it, and the current will circle around and activate the gearbox when it comes by.
Took me awhile to figure out :V