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
Credit