Comu is a $6 tiny CH32V203 RISC-V development board that fits inside a USB port

Over the years, we have seen several tiny “omu” USB boards that share this “fits-in-a-USB-port” form factor. It started with the Tomu, based on a Silicon Labs EFM32 Cortex-M0+, followed by the Fomu with a Lattice iCE40 FPGA, Qomu with an EOS S3 Cortex-M4F MCU and FPGA, and the Somu, a tiny FIDO2 security key. Icy Electronics has now introduced Comu, another tiny development board based on the WCH CH32V203 144 MHz RISC-V MCU. While measuring just 13 x 9.4…

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