Ring reader
This is the firmware for my IoT RFID reader, intended to be used with 125kHz RFID rings.
Project page: https://articles.maximemoreillon.com/articles/03878fe3-1eca-4f22-9521-0589ba076930
Example application: https://articles.maximemoreillon.com/articles/523
More info about the hardware: https://oshwlab.com/m.moreillon/iot_em4305_reader