The Ra-02 is a LoRa module based on the Semtech SX1278, operating at 433MHz. It provides long-range (up to 10km) low-power wireless communication via SPI. Ideal for IoT sensor nodes where range matters more than data rate.
| Pin | Name | Function | Type |
|---|---|---|---|
| VCC | VCC | 3.3V power | PWR |
| GND | GND | Ground | GND |
| SCK | SCK | SPI clock | BUS |
| MISO | MISO | SPI MISO | BUS |
| MOSI | MOSI | SPI MOSI | BUS |
| NSS | NSS | SPI chip select | BUS |
| DIO0 | DIO0 | Interrupt output | I/O |
| DIO1 | DIO1 | Interrupt output | I/O |
| RST | RST | Reset, active low | I/O |