YodaLogicHuge thanks to Aaron for joining the project. He was able to extract the stock LUT from the flash and get vibrant back and yellow colors. You can find a link to his Modded GxEPD library in the discussion section. I already converted all of my displays to the ESP32, but Arron has many more to play with. He was able to program onboard CC1110 processor with a custom firmware and exercise RF module. The RF module is bi-directional, so we can dedicate one unit to be a bridge with others. The battery-operated units then can register periodically and download the rendered image. I wish we all could get more of those displays.
New LUT and GxEPD library
A project log for 7.4" E-Ink Shelf Label used as a Weather Station
Modified Chroma74 shelf label to be my weather station display. It is 7.4" 3-Color E-Ink units that cost $12 on eBay.
Discussions
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It would be incredible to have a full custom firmware for these tags with working RF. I'd love to be able to use these in my home the same way they do in the store: where they could be sitting in different rooms and have periodically have new information sent to them wirelessly.
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