There are 3 repositories under ch552 topic.
Some ultra low cost, unique layouts mechanical macropad using CH552G
A BLE & 2.4G Keyboard Firmware using nrf52810/52811/52832
An open sourced python tool for flashing WCH CH55x series USB microcontroller with bootloader v2.30, v2.31 & v2.40.
Rotary Encoder with NeoPixels and USB Interface
F.A. Keyboard Firmware
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 $3 dollars
A full 32 key mechanical keyboard that can be made for only $5
Simple ISP Flash Tools for various Microcontrollers
Programmable MacroPad with Rotary Encoder and NeoPixels
Templates for bare-metal firmware development for some entry-level microcontrollers
Simple Board that can be used as a Mouse Jiggler, a Rubber Ducky or a Caps Blocker
USB controlled nRF24L01+ 2.4GHz Transceiver
CMSIS-DAP compliant debugging probe with SWD, JTAG, and VCP support
Programmable Macropad with NeoPixels
CMSIS-DAP compliant SWD Programmer
🦾 Firmware for a cheap CH552G macro keyboard off AliExpress/Amazon to "touch" a comma three from a comfortable position
Using SDCC with various chips from WCH (Nanjing Qinheng Microelectronics)
4NES4SNES from Raphnet ported to WCH CH551/CH552/CH554 (plus PSX controller support)
A library to automate Nintendo Switch games using CH55x microcontrollers.
An Arduino (Ch55xduino) sketch for CH551 or CH552 MCUs that makes it possible to connect a TI calculator to a computer over USB.
CH551 and CH552 Programming tool for Bootloader Ver2.3.1
An open sourced python tool for flashing WCH CH551/CH552/CH554/CH558/CH559 USB microcontroller with bootloader v2.30 or v2.31 (and maybe v2.40)
Just another Numeric Keypad using ch552g
FAK user configuration repository
基于CH552 单片机的HID多功能键盘,参考自:https://oshwhub.com/pomin/dial-san-jian-xiao-jian-pan
Custom firmware for a 3-key + rotary encoder macropad. Up to 3 layers, sequences.