@TheEnbyperor would this have the required I/O for dealing with a 24-pin keyboard ribbon cable? 🤔 I'm asking this genuinely, I know jack-shit about hardware hacking :p

@grufwub I don't think anything other than an Arduino mega would have *that* much I/O, and that doesn't have USB HID. You could either make a board using a STM32 arm chip (usually around 100 I/O, I'd be happy to throw a PCB design together for you) or use some serial/i2c I/O expander chips

@grufwub This one for example would be perfect https://uk.farnell.com/stmicroelectronics/stm32l475rgt6/mcu-arm-cortex-m4-80mhz-lqfp-64/dp/2849938. Overkill on every other front but it's probs the cheapest way to get that may GPIO pins

@TheEnbyperor I mean people seem to manage it on teensy boards which have far fewer GPIO pins 🤔. I found an STM32 board that has a good number of pins, support for i2c etc, also real cheap.

I might order a handful of different boards since they're all super cheap, then any that don't get used I have for other random projecs 🤷

@grufwub I think there are teensy boards with a lot more GPIO but they're quite expensive

@TheEnbyperor i mean teensy 2++ boards (which are ~£5 on AliExpress) seemed to be used a lot for this purpose. I have no idea how they're managing it though. I need to look more into it 🤔

@grufwub The teensy 2++ seems to have 46 gpio, but I'd never heard of it before. That one might actually be better since the STM32 toolkit/sdk is a litte advanced