Pick a project and get started, you’ll find the info needed to finish it afterwards.

I just built a handwired ortho split keyboard, microcontrollers, firmware, soldering, wiring, maybe that tickles your fancy?

You need a larger capacity? Why not a single C or D battery instead?

I magnetize screw drivers with just a normal magnet. What’s your usecase to need such a big magnet?

MQTT?