A portable serial terminal based on an RP2040 dev board, with some hopefully reusable bits of code:
* A 6x13-pixel antialiased bitmap font.
* A small but full-featured terminal emulator.
* A matrix keyboard driver with tap/hold functions.
* An ILI9488 SPI LCD driver.
* A PIO serial interface.
meybe You can run https://www.fuzix.org/ on this? how long this device work in real situations? a week, month?