CH55x USB to JTAG bridge

Universal utility for programming FPGA

Using the Raspberry Pi PICO inside the Gameboy

Yet another CH55x programmer with v1 and v2 bootloader detection and support.

development kit and libraries for SEGA Master System / SEGA Game Gear / SEGA SG-1000 / SEGA SC-3000 homebrew programming using C language (and the SDCC compiler)

Universal Mega Dumper v2 PCB

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

SNES controller to playstation(1/2) adapter firmware