LoRaMesh Project with ESP32 for Nostr Network \ stacker news ~nostr

https://m.stacker.news/9281

Introduction: LoRaMesh is a protocol that utilizes LoRa technology to create a mesh network. In this project, we will use ESP32 as network nodes to establish a robust and decentralized communication infrastructure in the Nostr network.

Initial Setup: Begin by configuring the development environment. Make sure to have the LoRa library installed in the Arduino IDE and ESP32 boards configured.

Constants Definition:

#include <LoRa.h>

#define NODE_ID 1
#define NOSTR_NETWORK_ID 123

Here, we define a unique identifier for each node (NODE_ID) and an identifier for the Nostr network (NOSTR_NETWORK_ID).

Packet Structure:

struct NostrPacket {
  uint8_t destination;
  uint8_t origin;
  uint8_t data[256];
};

This structure represents a packet in the Nostr network, containing information about the destination, origin, and payload data.

LoRa Configuration:

void setup() {
  Serial.begin(115200);

  if (!LoRa.begin(868E6)) {
    Serial.println("LoRa initialization failed. Check your wiring.");
    while (1);
  }
}

We initialize serial communication for debugging and configure the LoRa module at the 868MHz frequency.

Packet Sending Function:

void sendPacket(NostrPacket &packet) {
  LoRa.beginPacket();
  LoRa.write((uint8_t *)&packet, sizeof(NostrPacket));
  LoRa.endPacket();
}

This function sends a packet using LoRa. It converts the packet structure into bytes and sends it to the network.

Main Loop:

void loop() {
  NostrPacket receivedPacket;

  if (LoRa.parsePacket()) {
    int packetSize = LoRa.readBytes((char *)&receivedPacket, sizeof(NostrPacket));

    if (packetSize == sizeof(NostrPacket) && receivedPacket.destination == NODE_ID) {
      // Process received packet
      Serial.print("Received from Node ");
      Serial.print(receivedPacket.origin);
      Serial.print(": ");
      Serial.println((char *)receivedPacket.data);
    }
  }

  // Simulate sending a packet to Node 2
  if (millis() % 10000 == 0) {
    NostrPacket packetToSend;
    packetToSend.destination = 2;
    packetToSend.origin = NODE_ID;
    strcpy((char *)packetToSend.data, "Hello, Node 2!");

    sendPacket(packetToSend);
  }
}

The main loop checks for received packets and processes them if they are destined for the current node. It also simulates periodically sending a packet to Node 2.

Conclusion: This is a basic sketch to create a LoRaMesh node using ESP32 in the Nostr network. Keep in mind that more robust projects will require deeper considerations, such as efficient routing, security, and power management for battery-powered devices. This project serves as a starting point to explore the potential of LoRa technology in decentralized mesh networks.