[wolrah]

I recently built something similar with a 4.2" panel based on these instructions: https://georgik.rocks/weather-display-for-lilygo-ttgo-t5-4-7...

I think I might have seen that link here, either here or Reddit.

I tweaked a few things but it's basically the same code still. I slapped a 3500 mAh 18650 in it and it's been running now for a month and a half while still showing 89% battery remaining. If that pace holds up it'll be in the ballpark of a year of operation before it actually needs to be recharged.

Once an hour it wakes up, connects to WiFi, retrieves the information, updates the display, and then goes back to deep sleep. It's awesome, other than it being too small to comfortably read where I want to put it. Eventually I'll upgrade to a larger display, but I haven't seen any offered as reasonably priced standalone modules with a WiFi capable MCU attached out of the box like this one.