(Reference) RFID
RFID - Radio Frequency ID
Wiring
- Uses SPI communication protocol
| Sensor | Photon 2 |
|---|---|
| 3.3v | 3.3v |
| Reset | A1 (or any digital output pin) |
| GND | GND |
| IRQ | - |
| MOSI | MO |
| MISO | MI |
| SCK | SCK |
| SDA | A0 (or any digital output pin) |
Wiring Diagram
Operation
Library
- We need a library to handle much of the complex communication with the OLED
- To install a library, go to the command palette and type
Install Library - Install the OLED library:
MFRC522
Examples
- There are extensive examples in the library folder under
lib/examples
Code
- See the in-class exercises and notes for more detailed examples