These are CrowPanel ESP32 2.9” and 5.79” e-paper displays from a company called Elecrow. They have WiFi and Bluetooth so they can be remotely updated. Power is not needed after the displays are refreshed with new images so they’re perfect for low energy applications like price tags at a grocery store.
CrowPanel ESP32 2.9” E-paper screen
https://www.elecrow.com/crowpanel-esp...
CrowPanel ESP32 5.79” E-paper screen
https://www.elecrow.com/crowpanel-esp...
All sizes
https://www.elecrow.com/display/e-pap...
Check out the Elecrow giveaway campaign here:
https://www.elecrow.com/blog/lora-mod...
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