Wireless Data Transmission with Bharat Pi LoRa Boards

Unlock the potential of long-range communication: Transmit and receive data effortlessly using Bharat Pi LoRa Boards

IntermediateFull instructions provided472

Wireless Data Transmission with Bharat Pi LoRa Boards

Things used in this project

Hardware components

Bharat Pi LoRa Module with ESP32, LoRa RFM95W 868MHZ lora Long range transreceiver module chip with ESP32 WROOM

Software apps and online services

Arduino IDE

Story

Setup the Hardware:

Assemble the Bharat Pi LoRa boards according to the instructions.
Connect the necessary components (antenna, power source, etc.) to each board.

Install Required Software:

Install the necessary drivers or software for the Bharat Pi LoRa boards to communicate with your computer.

https://www.arduino.cc/en/donate/newsletter

https://wch-ic.com/downloads/CH341SER_ZIP.html
https://wch-ic.com/downloads/CH341SER_MAC_ZIP.html

Write the Code:

Write the code for the transmitter and receiver using the appropriate libraries for LoRa communication.
Test the code to ensure it functions correctly.

Upload the Code to the Boards(Transmitter):

Connect the transmitter board to your computer via USB.
Select the correct board and port in the Arduino IDE.

Upload the transmitter code to the board.

Upload the Code to the Boards(Receiver):

Connect the Receiver board to your computer via USB..
Upload the Receiver code to the board.

Test the Communication:

Power on both boards.
Ensure they are configured correctly and can communicate with each other.
Test sending data from the transmitter and receiving it on the receiver.

Additional Tips:

Make sure both boards are using the same frequency and spreading factor.
The range of LoRa communication depends on various factors like environment, antenna placement, and chosen spreading factor. You can experiment with different settings to find the optimal range for your setup.

Bharat Pi LoRa Transmitter and Receiver in Action

Code

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

//define the pins used by the transceiver module
#define ss 4
#define rst 14
#define dio0 2

int counter = 0;

void setup() {
  //initialize Serial Monitor
  Serial.begin(115200);
  while (!Serial);
  Serial.println("LoRa Sender");

  //setup LoRa transceiver module
  LoRa.setPins(ss, rst, dio0);
  
  //replace the LoRa.begin(---E-) argument with your location's frequency 
  //433E6 for Asia
  //866E6 for Europe
  //915E6 for North America
  // 866 MHz to 867 MHZ is licensed in India
  while (!LoRa.begin(866E6)) {
    Serial.println(".");
    delay(500);
  }
   // Change sync word (0xF3) to match the receiver
  // The sync word assures you don't get LoRa messages from other LoRa transceivers
  // ranges from 0-0xFF
  LoRa.setSyncWord(0xF3);
  Serial.println("LoRa Initializing OK!");
}

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

  //Send LoRa packet to receiver
  LoRa.beginPacket();
  LoRa.print("hello ");
  LoRa.print(counter);
  LoRa.endPacket();

  counter++;

  delay(1000);
}

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

//define the pins used by the transceiver module
#define ss 4
#define rst 14
#define dio0 2

void setup() {
  //initialize Serial Monitor
  Serial.begin(115200);
  while (!Serial);
  Serial.println("LoRa Receiver");

  //setup LoRa transceiver module
  LoRa.setPins(ss, rst, dio0);
  
  //replace the LoRa.begin(---E-) argument with your location's frequency 
  //433E6 for Asia
  //866E6 for Europe
  //915E6 for North America
//  while (!LoRa.begin(866E6)) {
  while(!LoRa.begin(866E6)){
    Serial.println(".");
    delay(500);
  }
   // Change sync word (0xF3) to match the receiver
  // The sync word assures you don't get LoRa messages from other LoRa transceivers
  // ranges from 0-0xFF
  LoRa.setSyncWord(0xF3);
  Serial.println("LoRa Initializing OK!");
}

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 LoRaData = LoRa.readString();
      Serial.print(LoRaData); 
    }

    // print RSSI of packet
    Serial.print("' with RSSI ");
    Serial.println(LoRa.packetRssi());
  }
}