Admittedly, I should have probably called it a night a little earlier than this was done but I was on a roll, so I cranked the music (turned off for the video below), and made another 3 of the motor modules.

Next step was attaching all the motors together and testing, (missed 1 solder point from ground to a motor… oops)

After adding 4 buttons (1 for each row) and testing all the connections, voilà! a 4 button vending machine unit that doesn’t require money!