The next iteration of Chris Trotter's ArcBoard is here. Mk20 comes with a lot of improvements.
KBD.news Published December 2, 2025
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Chris Trotter aka crazymittens-r is back with mk20 of his pretty unique ArcBoard. This design isn't for everyone, it was created with the author's fibromyalgia in mind, allowing his hands to stay in a resting position.
Well, something like 1000 hours over 6.5 months, a 650+ page build journal & 8500+ post build thread, dozens (hundreds?) of CAD components, 4? kilograms of prototype plastic printed, 6 Kicad projects, 7 JLC orders, and so…much…learning… (but I got my desk back!) […] You should not build this. Probably mk21 will be much better – crazymittens-r.
It's hard to highlight a single feature, but I like the "paddle keys" between the main keys and thumb cluster.