Wiring
Check pinout, power supply, common GND and voltage levels before connecting the module.
Full code
#include <SPI.h>
#include <LoRa.h>
void setup() {
Serial.begin(115200);
LoRa.begin(433E6);
}
void loop() {
LoRa.beginPacket();
LoRa.print("hello");
LoRa.endPacket();
delay(2000);
}How it works
This lesson matches the page title and gives a clean starting point for this exact example.
Common mistakes
Check board selection, wiring, libraries, power supply and serial monitor baud rate.