Never touched a Raspberry Pi before.
I’m creating a simple puzzle box. It will need to be battery operated. There will be four buttons. When, and only when, all four buttons are pressed I want an electromagnet to activate. The magnet will push up a magnet on top of it in a tube.
What do I need to make this?
The only justification of using a raspberry pi is if they want to make the box with a whole bunch of buttons and be able to dynamically set which 4 buttons open the box.