I want to create a fail safe cabinet security lock kitchen. Thinking of a lock for each draw or door with, at the moment, a release / lock button. Future I would like keypad to number each door or draw. I need help with the electronics side. Thinking of transistors for switching. Can I get some advice of the wiring and electronics needed to pull something like this off. I have a uno and a mega on the way with FAS PG-PCL 100. 12VDC/250mA, 24VDC/125m and the attached pic if wiring diagrams.
Try this:-
Your lock is just a 12V relay in electrical terms.