Work in progress.
- esp8266 serves local config page. syncs with online DB (downloads json file).
- esp8266 writes Card details to i2c eeprom it shares with atmega8
- Door system run by an atmega8 talking to an off the shelf card reader (wiegand protocol)
- Atmega checks scanned cards against EEPROM and runs independant of node (more reliable)
EEPROM Format binformat Schema for user info (make your management app spit this out and the reader will update itself) sample schema