annoyingpatrick / lora-gps

LoRaGPS App

This app for the Heltec WiFi LoRa V3 board collects GPS data and transmits it over LoRaWAN.

Getting Started

Software

1. Install VSCode.
2. Install Platform.io for VSCode.
3. Open this folder in VSCode. It will detect the project as the correct platform.io project.

Hardware

Connect the GPS module to the Heltec V3 with the following pin mappings:

Heltec V3	GPS
3V3	VCC
GND	GND
45	TXD

LoRa / The Things Network

1. Create an application in TTN.
2. Flash the lora-deveui-display app to the board. This will show the device's EUI.
3. Register the device and its EUI with your application. You will need the JoinEUI and AppKey.

Configuring LoRaWAN

Create a file called lora_parameters.cpp in the src/ directory. Copy the following into the file, filling in the parameters for your LoRa application:

#include "stdint.h"

///////////////////////////////////////////////////////////////////////////////
// LoRaWAN Network Settings
///////////////////////////////////////////////////////////////////////////////

// JoinEUI specifies the application used on The Things Network.
// You should set this to whatever your TTN generates.
uint8_t joinEui[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

// AppKey is the encryption key used for communication. This must be
// shared with TTN.
uint8_t appKey[16] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

Build the App and Flash the Board

Load the LoRaGPS app to the Heltec V3 by pressing the right arrow button on the bottom blue bar in VSCode.