hardware

A small device to show CO2 level in the car takashyx/M5StickCPlus_SCD30: CO2 meter (github.com)

OpenPool – The Super Billiard

A US->JP Keyboard Converter is a bus-powered hardware bridge that adapts US keyboards to Japanese systems by translating scancodes and offering a menu-switchable Control/Caps Lock swap at the HID protocol level for seamless, driver-free compatibility.