125kHz RFID board KICAD files and hardware design

TECHNICAL SUPPORT Communication Modules
1

Customer:

We are building a chessboard with an RFID reader array system. Could you share the KICAD files for the RFID reader board? It would help reduce our R&D time.

Originally submitted via email support on 1 November 2025. Migrated to the forum for community visibility.

2

Soldered Support:

The KICAD files are available on our GitHub:

The easyC/qwiic version is here:

The difference between the I2C/UART versions is the firmware on the ATtiny microcontroller.