nykloo / esp32rfid_pcb

ESP32 rfid reader/writer using the EM4095 chip

ESP32 rfid circuit

125khz rfid reader/writer for EM4x chips

Works for kyber crystals

Firmware

https://github.com/nykloo/ESP32RFID-Firmware

Control App

https://github.com/nykloo/ESP32RFID-App

IMPORTANT NOTES

• C_RESA1, C_RESB1,C_DV1, C_DV2 should be fairly close to their intended values (ie use capicitors with a tolerance of less than 5%) Alternatively the optional capacitors can be used to more tune the resonate frequency of the antenna circuit.
• The PCB coil antenna is designed to printed on a pcb with thickness of 1mm and outer copper weight of 1 oz. I have been ordering these from jlc pcb.

Schematic

PCB

Assembly