I'm working on optimizing some of my wife's ecommerce fulfillment and want to use e-ink labels on racks to help her organize and optimize her process. I've found some systems on Aliexpress or labels that can be hacked, however these require a base station or android app to manually program. Curious if anyone knows of a brand or source that is equivalent to an ESP32 attached to a small e-ink display with high enough resolution to render a pdf417 qr code?
Must haves are:
- long battery life
- wifi networking to update display OTA
- basic docs to use python / c to communicate with device
Thanks!
Wifi is massive overkill for this kind of application and will be very difficult to make work for the power profile you want. Check out an alternative 2.4ghz protocol like zigbee, aka: https://hackaday.io/project/165467-papyr-nrf52840-epaper-dis....
You can buy a zigbee router for less than 5 bucks, plug it into a pi zero and you have a zigbee > wifi bridge for less than 10 bucks.