LoRa Module for ESP32 DIY Development Kit

Description

LoRa integrated LoRa Module Ra-02, designed and produced by Ai-Thinker. On the board has some extra space left over, so we give you a prototyping area, it's great for adding on your customized circult working with the LoRa Module.

LoRa enables long-range transmissions (more than 10 km in rural areas) with low power consumption，The technology is presented in two parts: LoRa, the physical layer and LoRaWAN (Long Range Wide Area Network), the upper layers.

LoRa and LoRaWAN permit long-range connectivity for Internet of Things (IoT) devices in different types of industries.

Product Features

• Lora Module: Ra-02 (by Ai-Thinker)
• Series Communication Protocol: SPI
• Universal Perboard
• Working Frequency: 433 MHz
• Supports FSK, GFSK, MSK, GMSK, LoRa ™ and OOK modulation modes
• Receive sensitivity: lowest to -141 dBm
• Programmable bit rate up to 300Kbps
• Build-in PCB Antenna
• External Antenna port
• Program platform: Arduino, Mrcropython, UIFlow(Blockly)

Kit includes

• 1x M5Stack LoRa Module

Applications

• Automatic meter reading
• Home building automation
• Remote irrigation system

Documents

• LoRa Info (LoRa)

Learn

Example

Arduino IDE

These are the point-to-point communication examples between two LORA modules. The LoRa nodes send and receive messages.

• Blue string indicates send succeed.

• Yellow string display the received messages.

• Red string indicates initialization failed.

To get complete code, please click here

#include <M5Stack.h> #include <M5LoRa.h>  //declaration String outgoing;                     // outgoing message byte msgCount = 0;                   // count of outgoing messages byte localAddress = 0xBB;            // address of this device byte destination = 0xFF;             // destination to send to  //initialization M5.begin(); LoRa.setPins();                      // set CS, reset, IRQ pin LoRa.begin(433E6);                   // initialize ratio at 915 MHz  //send message void sendMessage(String outgoing) {   LoRa.beginPacket();                // start packet   LoRa.write(destination);           // add destination address   LoRa.write(localAddress);          // add sender address   LoRa.write(msgCount);              // add message ID   LoRa.write(outgoing.length());     // add payload length   LoRa.print(outgoing);              // add payload   LoRa.endPacket();                  // finish packet and send it   msgCount++;                        // increment message ID }  //receive message void onReceive(int packetSize) {   if (packetSize == 0) return;       // if there's no packet, return   int recipient = LoRa.read();       // recipient address   byte sender = LoRa.read();         // sender address   byte incomingMsgId = LoRa.read();  // incoming msg ID   byte incomingLength = LoRa.read(); // incoming msg length    String incoming = "";    while (LoRa.available()) {     incoming += (char)LoRa.read();   } }  onReceive(LoRa.parsePacket()); 

More information

Schematic