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LORA SX1278 and (Ra-02) SMD Modules 433MHz 10KM COM44, R17

Fr13,500

Ra-02 is a wireless transmission module based on SEMTECH’s SX1278 wireless transceiver. It adopts advanced LoRa spread spectrum technology, with a communication distance of 10,000 meters. It has strong ability of anti-jamming and has the function of air wake-up Consumption.

 

In stock

SKU: WRL9494 Category:

Description

Ra-02 is a wireless transmission module based on SEMTECH’s SX1278 wireless transceiver. It adopts advanced LoRa spread spectrum technology, with a communication distance of 10,000 meters. It has strong ability of anti-jamming and has the function of air wake-up Consumption. The SX1278 RF module is mainly used for long-range spread spectrum communication, and it can resist Minimize current consumption. The SX1278 has a high sensitivity of -148 dBm with a power output of +20 dBm, and a long transmission distance and high reliability. At the same time, compared with the traditional modulation technology, LoRa ™ modulation technology has obvious advantages in anti-blocking and selection, which solves the problem that the traditional design scheme can not consider the distance, interference and power consumption at the same time.
It can be covering thousands of people in the district environment, particularly suitable for meter reading, smart home, burglar alarm equipment etc…..

Pinout

LoRa-Module-2
LoRa-Module-3

Features

  • LoRa ™ Spread Spectrum modulation technology
  • Constant RF power output at + 20dBm-100mW voltage change
  • Half-duplex SPI communication
  • Supports FSK, GFSK, MSK, GMSK, LoRa ™ and OOK modulation modes
  • Automatic RF signal detection, CAD mode and very high speed AFC
  • Packet engine with CRC up to 256 bytes
  • Small footprint dual-row stamp-hole patch package
  • Shielded housing
  • Spring Antenna

Specifications

  • Communication distance: 15KM
  • Sensitivity: down to -148dBm
  • Programmable bit rates: up to 300kbps
  • RSSI dynamic range: 127dB
  • Wireless frequency: 433MHz
  • Working voltage: 1.8-3.7v
  • Working temperature: -40-+80 ℃

To interface the LoRa SX1278 or Ra-02 module with an Arduino, you can follow these steps. Both modules use SPI communication, so the connections to the Arduino will be similar.

Components Required:
LoRa SX1278 or Ra-02 Module (433 MHz)
Arduino (Uno, Nano, Mega, etc.)
Jumper Wires
Breadboard (optional)
Antenna for the LoRa module
Wiring the SX1278 or Ra-02 Module with Arduino:
The LoRa module communicates via SPI, so you need to connect the corresponding SPI pins between the module and the Arduino.

Pin Connections (for Arduino Uno/Nano):

  • LoRa Module Pin                                                           Arduino Pin
  • MISO                                                                                Pin 12
  • MOSI                                                                                Pin 11
  • SCK                                                                                   Pin 13
  • NSS (CS)                                                                          Pin 10
  • RESET                                                                              Pin 9
  • DIO0                                                                                Pin 2
  • GND                                                                                 GND
  • VCC (3.3V)                                                                     3.3V (Important!)

Note: The LoRa module operates at 3.3V, so ensure you’re using the 3.3V pin for power. Also, the logic level is 3.3V, so if you are using a 5V Arduino, it’s safer to use level shifters for the SPI pins (although many users get by without them).

Libraries and Code:
You can use the LoRa.h library by Sandeep Mistry for easy integration with Arduino. Here’s how to install the library and write a basic program to send and receive messages.

Step 1: Install the LoRa Library
Open Arduino IDE.
Go to Sketch -> Include Library -> Manage Libraries.
Search for LoRa and install the LoRa by Sandeep Mistry library.

Step 2: LoRa Transmitter Code (Sender)

#include <SPI.h>
#include <LoRa.h>

void setup() {
Serial.begin(9600);
while (!Serial);

// Initialize LoRa module
Serial.println("LoRa Sender");
if (!LoRa.begin(433E6)) { // Set frequency to 433 MHz
Serial.println("Starting LoRa failed!");
while (1);
}
}

void loop() {
Serial.println("Sending packet...");

// Send a packet
LoRa.beginPacket();
LoRa.print("Hello World");
LoRa.endPacket();

delay(1000); // Wait 1 second between packets
}

Step 3: LoRa Receiver Code
cpp
Copy code

#include <SPI.h>
#include <LoRa.h>

void setup() {
Serial.begin(9600);
while (!Serial);

// Initialize LoRa module
Serial.println("LoRa Receiver");
if (!LoRa.begin(433E6)) { // Set frequency to 433 MHz
Serial.println("Starting LoRa failed!");
while (1);
}
}

void loop() {
// Try to parse packet
int packetSize = LoRa.parsePacket();
if (packetSize) {
// Received a packet
Serial.print("Received packet: ");

// Read packet
while (LoRa.available()) {
String received = LoRa.readString();
Serial.print(received);
}

// Print RSSI (signal strength)
Serial.print(" with RSSI ");
Serial.println(LoRa.packetRssi());
}
}
 
Package includes: 
1pc × SX1278 and (Ra-02) SMD Modules

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