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by cellularmitosis 1623 days ago
Search for a 6-key handwired tutorial, like this one: https://medium.com/cracked-the-code/a-complete-guide-to-buil...

The only parts you need are switches, wires, diodes, and a Pro Micro clone from eBay.

I recommend 6-key because they are supported out of the box by QMK and there are plenty of tutorials.

It looks like the tutorial I linked to above doesn’t actually explain how the matrix / diodes work, so you’ll want to google for an explainer.

Happy hacking!