Digital drinks balance tracking system for the AfRA hackerspace. source code.


Frontend, accessible in the AfRA LAN (afrapay.lan) and on the MatePad in the kitchen. Also provides an API for the MateCard terminal (docs: afrapay.lan/swagger).


MateCard terminal that allows for quick and easy balance adjustment with a contactless card

  • NFC-A/Mifare (e.g. TfL Oyster, ov-chipkaart, ITSO)
  • NFC-F/FeliCa System 3 cards (Suica, Pasmo & the other Tokyo IC transit cards)
  • 125khz RFID (e.g. afra door tokens)

Demonstration video (recorded on 2023-05-17, might not reflect changes made since)

Please check the button mapping information on the fridge & the instructions on the shelf for more information.

If you have any questions or feedback, please contact the AfRApay team - embr