I have been trying to get an RFID access unit working with my Photon. It uses the wiegand protocol. I have successfully been able to use it without any issue on an Arduino uno using this library. Any suggestions for getting it ported over to the Photon? Unfortunately just packaging it up and importing it into the web IDE didn’t work (although didn’t throw any errors after adding application.h)
Final library with support for Photon can be found here.