🌐

IoT Lab content is currently available in Arabic only. We're working on an English version.

Long-Range Communication (LoRa) | NexaLearn IoT Lab | NexaLearn

Wireless Communication30 دقيقة

Long-Range Communication (LoRa)

Send data over kilometers (sometimes 10 km+) without internet or SIM cards.

Lesson Content

LoRa (Long Range) technology relies on transmitting very small data packets at low radio frequencies (like 433MHz or 868MHz). The technology provides enormous distances at minimal power consumption, but it is very slow and only suitable for sending sensor data (temperature, GPS coordinates) — not suitable for audio or video.

Components Needed

عدد 2 Arduino Unoعدد 2 LoRa SX1278 Modules

Wiring Notes

Use the SPI protocol. LoRa requires exactly 3.3V as specified in the datasheet — 5V will burn it.

Code Example

// الكود يستلزم مكتبة LoRa.h
// الإرسال: 
// LoRa.beginPacket();
// LoRa.print("Hello 10KM Away");
// LoRa.endPacket();

Common Mistakes

Powering on a LoRa module or any wireless transmitter before connecting the antenna. Operating without an antenna may damage the amplifier chip inside the module.

Next Lesson

Bluetooth Control (HC-05)