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== Electronic Shelf Label == Specs: * 2.9" BWR (black-white-red) e-paper display * ZBS243 microcontroller (8051 core, 802.15.4 compatible) (zigbee-ish) * 1 Mbyte SPI EEPROM * 2x CR2540 button cell battery Links: * Reverse engineered by [https://dmitry.gr/?r=05.Projects&proj=30.%20Reverse%20Engineering%20an%20Unknown%20Microcontroller dmitry.gr] * [https://github.com/atc1441/ZBS_Flasher/ Firmware] by [http://atcnetz.blogspot.com/2019/02/ausgemusterete-elektronische-e-ink.html Aaron Christophel a.k.a. atc1441] ** [https://www.youtube.com/watch?v=QqyUzDRQEqA flashing tool demo] * [https://github.com/jjwbruijn/ESP32-epaper-station accesspoint firmware] (instead of CC2531) via: https://tweakers.net/aanbod/3228526/solum-e-paper-prijskaartjes-esl-electronic-shelf-labels-29-inch.html == notes == * [[User:Xopr|xopr]] heeft een CC2531 stick liggen
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