An adapter to connect a USB keyboard to the reMarkable 2 and have the reMarkable behave is if there were a Type Folio connected. Based on the Raspberry Pi Pico. Inspired by the prior work done by Dudlushka in https://github.com/Dudlushka/Remarkable_TypeFolio_Pretender.
⚠️ This is still a work in progressIt needs a power source right now and expects a command via UART to start the handshake with the reMarkable. Also, there is still at least one crashing bug somewhere in the code.
The circuitry required is the same as in Dudlushka's project: https://github.com/Dudlushka/Remarkable_TypeFolio_Pretender