It’s finally time to get our hands dirty.
For the sake of this tutorial I designed and 3D printed a small case that will serve as the base structure for my handwired keyboard. It doesn’t matter what case you use anyway, the procedure is the same from a 40% to a full sized keyboard; you are only limited by the number of inputs on your main controller but up until a tenkeyless you should be good with pretty much anything (teensy, arduino, promicro, …).
If you prefer visual gratification, at the bottom you’ll find a video tutorial but this article will also cover some theory about the matrix so I guess it’s worth a read.
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