The Gherkin is a very tiny keyboard. With only 30 keys, it offers a condensed ortholinear layout that contains all of the alpha keys. The keys in the bottom row shift to other layers when held. The original Gherkin Keyboard is a project crated by 40percent.club.
This model is a handwired version powered by a Type C Arduino Pro Micro Clone. The keyboard uses QMK Firmware. The unusual wiring job allows this handwired version to use the same firmware as the original Gherkin PCB.
While the Gherkin layout may be a little on the small side to use as a daily driver, this project can also make for a very compact macro pad.
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You will need:
30 mechanical keyboard switches
30 1N4148 Diodes
30 keycaps
1 Type-C Arduino Pro Micro Clone
4 M2 8mm screws (laptop screws work great)
Solder and wire, I used 24 AWG