So that's the current state of available stuff - The ESP32 stuff is quite interesting because it's all you need for an IoT module and in the right version it even has enough RAM for full screen updates.
I don't know specifics about the voltage conversion yet (these screens need about -20V - 20V), but I reckon that if you're really frugal you could make a battery powered wall display for under 60€ with this stuff - and that's part 1 of what I'm thinking of doing.
Part 2 would be to stick in a Pine64 SOPINE System On a Module [6], put on a capacitive touch layer [7] and run a mainline Linux with KOReader and maybe even a Wayland compositor to be able to run any Linux app (the high contrast GTK theme seems perfect for this application).
All hopefully for under 200€, which is a lot less expensive than other e-readers if that size and a whole lot cooler.
I don't know specifics about the voltage conversion yet (these screens need about -20V - 20V), but I reckon that if you're really frugal you could make a battery powered wall display for under 60€ with this stuff - and that's part 1 of what I'm thinking of doing.
Part 2 would be to stick in a Pine64 SOPINE System On a Module [6], put on a capacitive touch layer [7] and run a mainline Linux with KOReader and maybe even a Wayland compositor to be able to run any Linux app (the high contrast GTK theme seems perfect for this application).
All hopefully for under 200€, which is a lot less expensive than other e-readers if that size and a whole lot cooler.
Any tips?
[6]: https://store.pine64.org/?product=sopine-a64
[7]: https://aliexpress.com/item/32984143128.html
[8]: https://github.com/koreader/koreader