20 Key MacroPad

thingiverse

This was modeled by yours truly in Fusion 360 (highly recommend!). I was looking for a numpad to accentuate my current 68% layout (also custom built). This was 3d printed with black and white PLA at a layer height of 0.16 with ~20% infill. It's held together with 4-40 screws and the threads were (surprisingly) printed. They hold surprisingly well for being printed. Overall build time consisted of ~10 hours to print IIRC, plus around an hour or so with a soldering iron, and then around half an hour of swearing at easyAVR to get it programmed properly. I handwired it with 1n4148 diodes and generic copper wire, wired up to a USB-C pro micro (from switchtop, Note that the STEP file has a pro micro with microusb in it - it'll work, but I can't guarantee the mount compatibility.). I used Gat green switches and leftover carbon YMDK keycaps. I included an image of my mapping from easyAVR - I lost the files when I redid my computer recently. EasyAVR is relatively easy to understand and use for the average guy - really beats hardcoding everything. That, or use QMK to program it - I have no experience with QMK. I can say it's awesome as a numpad as well as for function keys after a few months of use. You're free to make your own - If you feel the innate desire to sell it, please don't. You'll make my cat sad :(