Keyboard Builders' Digest / Projects
HE60 PCB
The HE60 is an open-source 60% Hall-effect keyboard PCB by peppapig.
Published April 25, 2025
As already teased earlier, Pontakorn Prasertsuk aka peppapig/peppapighs released the HE60, a 60% Hall-effect PCB with split spacebar support, and a Tsangan bottom row layout.
This is my latest project in my ongoing Hall-effect keyboard obsession. Inspired by open-source projects like GH60, Waffling60, and Macrolev, I created this design with the hope that it will serve as a useful reference for anyone interested in building their own Hall-effect PCB – Pep.
The PCB was developed with a focus on reducing fabrication costs. The current version costs ~80USD for 2 boards using JLCPCB economy PCBA. To achieve this, the author removed many components from previous designs that he found had little to no impact on PCB performance.
The HE60 runs on the libhmk firmware, previously released by Pep. The software latency (from input detection to USB packet transmission) averaged around 0.4ms – "not bad for a PCB polling at 1000Hz", according to the designer.
Specs
- 61-65 keys, Tsangan bottom row
- split spacebar support
- HE switches
- on-board STM32F446RET6 MCU
- Support for GH60 tray mount cases (KBDfans Tofu60 Redux, Holy60)
- libhmk firmware
- hmkconf web-based configurator
Resources
Published on Fri 25th Apr 2025. Featured in KBD #190 (source).
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