Use this repository to read RFID cards with the Raspberry Pi.
| Wires | Function |
|---|---|
| Red | Typical operation 5V-12V -- 3.3V + 5V from GPIO is connected |
| Black | Ground |
| Green | Data 0 - Logic 5V coming out, regulate down to 3.3V for rPi GPIO |
| White | Data 1 - Logic 5V coming out, regulate down to 3.3V for rPi GPIO |
| Yellow | Programmatic Beep Control (Reader beeps when Yellow is set to ground) |
To compile:
$ gcc -lpthread -lwiringPi -lrt reader.c -o -lcurl reader.o
