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A comment on Show HN: Threeboard – a full-size mechanical USB keyboard with only three keys. Parent comment
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!
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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!