alt Hacker NewsI’ll need to check my notes on power consumption. I’ve spent quite a bit of time trying out different modes and configurations… it’s not great. I would not expect years at all. You gotta be very careful about what has to stay on and off.
Furthermore, bugs. To this time there’s random crashes that happen with sleep which limits their use
I have some relevant experience. I built this a few years ago:
https://imgur.com/a/diy-automatic-e-ink-newspaper-using-rust...
After careful optimization, the v1 got about 6 months out of a 1100 mAh battery. Later improvements and bumping to a 3300 mAh battery got me to 14 months, before my kid yanked it off the wall, total'd the panel and I rebuilt it. The test continues.
That said--op isn't wrong. If power usage is the metric you optimize for, there's much better BOM than an esp32.