F.A. Keyboard Firmware

Rotary Encoder with NeoPixels and USB Interface

Collection of various development boards for microcontrollers (e.g., CH55x, CH32, PY32, STC8, STM32) and accompanying example software.

An Open-Source CMSIS-DAP Debug Probe based on DAPLink and USB bus convert and it can realize USB convert to serial interface based in CH552, low-cost of $5 dollars

Simple ISP Flash Tools for various Microcontrollers

An Advanced BadUSB

USB controlled I²C OLED

Programmable MacroPad with Rotary Encoder and NeoPixels

An ISP flashing tool for the WCH CH55x, CH579, CH32F103 under linux

Simple Board that can be used as a Mouse Jiggler, a Rubber Ducky, or a Caps Blocker

QMK for 8051

USB controlled nRF24L01+ 2.4GHz Transceiver

CMSIS-DAP compliant debugging probe with SWD, JTAG, and VCP support

CMSIS-DAP compliant SWD Programmer

Programmable Macropad with NeoPixels

🦾 Firmware for a cheap CH552G macro keyboard off AliExpress/Amazon to "touch" a comma three from a comfortable position

A library to automate Nintendo Switch games using CH55x microcontrollers.

FAK user configuration repository

CH55x Pinout