Image: u/JuanjoFuchs on Reddit · The e-paper calendar on the fridge door in its foam case
A 13.3-inch e-paper family calendar for the fridge door
A Waveshare 13.3-inch e-paper panel and a XIAO ESP32C3 show a shared family calendar. Claude helped write the Python server that renders the frames and sets sleep times, giving 1.5 to 2 months per charge.
Credits
- Reddit poster JuanjoFuchs Source ↗
Earliest dated source:
The full story
A shared family calendar stuck to a fridge door, built from a Waveshare 13.3-inch e-paper HAT (about $177), a Seeed XIAO ESP32C3 ($12) and a 2,000 mAh battery ($16). The case is cut from the foam the display was packed in. The layout gives more height to this week and today, shrinks past days, and later gained weather and temperatures for the next seven days.
With Claude's help the maker wrote a small Python server on a home machine that renders each frame and tells the ESP32 when to wake. The board stays as simple as possible: it fetches the frame, updates the display and goes back into deep sleep until the scheduled time, with slower refreshes overnight. The maker expects 1.5 to 2 months between charges.
Keeping the rendering on the server means new screens, such as thermostat settings or a film watch list, can be added without reflashing the board.
How it was done
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Sources
From a short post by the maker, so the details are as they tell them.
- Reddit: I built a calendar display for my fridge doorReddit poster: JuanjoFuchsPosted
The maker's post in r/eink with the parts list and how it works.
- The project: waveshare.com
Waveshare's product page for the 13.3-inch e-paper panel used.