Python code to connect an Wiegand RFID Card Reader on Raspberry Pi using the RPIO library.
Due to performance issues, we decided to rewrite the program in C with wiringPi lib.
##Connection diagram
##Links
- RPIO Library
sudo pip install RPIO
- Raspberry Pi
###good article about how Wiegand card readers function http://www.thegategeek.com/how-do-wiegand-card-readers-and-devices-work/