cern-ohl

60% Bluetooth PCB using the nRF52840. MX, ALPS and SMK versions.

Multi layout 60% PCB with support for common ANSI and ISO layouts and split space. SE-version is for use in Polaris, DB-version for use in Bakeneko/Kei.

3D Printable 3:1 Geared Extruder

A programmable (QMK/TMK supported) HHKB controller with integrated hub

M19O2 open source hardware Oxygen Concentrator based on the Pressure Swing Adsorption cycle aka Skarstorm cycle

The FB2020 Core XY 3D Printer repository

Steezy60 is a 60% PCB in two versions: one for SMK gen 2 switches one for ALPS-compatible switches. Compatible with standard tray-mount cases. BIG layout compatibility.

The Unextended Keyboard. A 60% Keyboard targeting Alps and AEK-keycaps

Leopold FC980C replacement keyboard controller

A collection of all of my common settings/symbols/packages and selfmade footprints/symbols and a page layout for KiCad.

Altium footprints and schematics used in my custom designs

CoffeeCaller. Once a nice office gadget it now evolved to a small development board for the Nordic nRF52840.

60% PCB for using ISO AEK keycaps. Supports split r-shift, split space and Tsangan bottom row (non AEK space keycap).

1/2 channel 4-20 mA to voltage converter boards using LMP8640 current sense monitor.

Low-cost replay device for playing back Tool Assisted Speedruns on real hardware

this is the repo for the first prototype of the opencare project

A simple and fast microwire twister

Custom PCB design of an external S-&Watt-Meter for radios. Useful for all enthusiasts and amateur HAM operators.

Everything that ships with DSD TECH USB-to-CAN adapters: the manual, the hardware design files, the firmware and working example code. SH-C30A.

An open-source assistive switch that is activated by movement or extremely light contact.