This repository contains the sources and specs for the PCBs I've made for my pet project, Cosmos Keyboard Generator.
A single-key PCB, with hotswap and RGB support that locks into place. [Main Website] [Buy]
It's similar in functionality to the Amoeba PCBs (in fact I've used some of the same footprints), but I've switched to large SMD pads to make wiring easier and designed the footprint to twist into a custom socket.
The version here on GitHub is pared down in terms of artwork and panelization, as my goal here is to make it easy for you to produce your own functionally identical version, not copy 1:1 what I sell. It's cheaper through JLC to buy the non-panelized version anyways. See the subfolder's README for instructions on manufacturing these yourself.
Pinouts and wiring instructions are on the Plum Twist website. A choc version is sadly impossible because the choc hotswap socket is too large to enable twisting while keeping the PCB footprint small.
An RP2040-based microcontroller with 2 spec-compliant USB ports, a VIK connector, and FPC connectors for connecting keys. [Main Website] [Buy]
The rightmost USB (closest to the RP2040 chip) is for programming. The leftmost PCB (by the SPI flash) cannot be used for programming. See the subfolder's README for pinouts, QMK examples, and more.
An NRF52840-based microcontroller with a USB port, battery connector & charger, on/off switch, a VIK connector, and FPC connectors for connecting keys. [Main Website] [Buy]
Because it uses a shift register to drive columns, this board is capable of driving large keyboards even with external modules and lighting. See the subfolder's README for more information.
A splitter for VIK cables. [Docs] [Buy]
I license the subprojects differently, so refer to each subdirectory for licensing information.