His Morse Code USB Keyboard Mk II adds to that list. It’s a Saturday afternoon project, with a few parts slapped onto a piece of perf-board, that allows using a Morse key as a USB keyboard.

The Lunar is a 2-in-1 device that combines a keyboard with a mini PC ... In terms of ports, there’s a USB 4.0 Type-C, a USB 3.2 Type-C, and a USB 3.0 Type-A. Wireless connectivity options ...

This isn’t a USB HID keyboard, instead it uses a USB-to-serial chip and appears to the host computer as a serial device. The keys themselves are simple momentary action switches, perhaps a ...