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

An open sourced python tool for flashing WCH CH55x series USB microcontroller with bootloader v2.30, v2.31 & v2.40.

Simple ISP Flash Tools for various Microcontrollers

Templates for bare-metal firmware development for some entry-level microcontrollers

USB keyboard/mouse for PS/2 (or AT, Serial) computers. This is the miniature hardware version compatible with the https://github.com/rasteri/HIDman firmware.

CH55X assembly instruction description

HIDman for ZX Spectrum

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)

CH559 USB mouse host firmware — read a USB mouse and stream it over SPI. Pairs with the zmk-ch559-spi ZMK module. (GPLv3)

NRFLite port for CH55x microcontrollers using CH55xduino.

ZMK input driver: use a USB mouse on a wireless keyboard via a CH559 USB-host bridge over SPI (pairs with ch559-mouse-to-spi).

Schematic and PCB files for ElectronicCats HubUSB FeatherWing with CH559

An affordable USB-CDC dev board.

BASIC-52 Ver 1.31 along with I2C and SFR read/write using internal RAM, OSC using WCH CH552T assembled using ASEM-51

Ch551G /CH552G /CH554G Blaster 1.4 [45]

CH551G / CH552G / CH554G Blaster [59]

MCS BASIC-52 running on WCH CH552T with internal 1kB RAM and 24MHz internal oscillator.

WCH CH552T example programs using BASIC-52, KEIL, SDCC and ARDUINO

Production-ready Embedded DevOps template for professional firmware development, featuring reproducible Docker toolchains, Test-Driven Development (TDD), GitHub Actions CI/CD, static analysis, code coverage, artifact publishing, and hardware-in-the-loop (HIL) validation for 8-bit and 32-bit microcontrollers and FPGAs.