A few days ago I had an idea for a simple e-ink project and found Inkplate - an Open Hardware design with ESP32 and recycled Kindle displays.
Programmed it to wake up daily at midnight to download a PGM image over WiFi (https://gitlab.com/dos1/kartka) from a server which checks some stuff like trash collection schedule. Should last years on a single battery charge.
Check it out if you look for a super approachable way to build some e-ink stuff! https://inkplate.io/
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Turns out that "should last years" was a bit too optimistic - it does last about a single year though in practice, which is good enough :)
@Phaserune Read the post again ;)
@dos you mean just the charge right? Or do you mean the display only lasted about a year?