AGLoRa

Project AGLoRa - easy opensource LoRa GPS tracker. Created by Eugeny Shlyagin (shlyagin@gmail.com)

Click to open video.

AGLoRa is an acronym for "Arduino GPS LoRa". LoRa (from "long range") is a proprietary low-power wide-area network modulation technique. https://en.wikipedia.org/wiki/LoRa

AGLoRa is a simple open-source satellite tracking system for hiking, sailing, pet finding, and other outdoor activities. All components are widely available to buy online (aliexpress etc.).

AGLoRa receives the GPS coordinates from other trackers (via LoRa) and immediately transmits them to the phone app. By default the tracker sends its coordinates via LoRa every 10 seconds, when its GPS data is valid.

ABOUT THE PROJECT

We are going to test E32-E433T30D. It is a wireless transceiver module, operating at 433 MHz based on original RFIC SX1278 from SEMTECH. Aglora broadcasts coordinates to other trackers.

COMPONENTS AND SUPPLIES

Arduino Nano or Arduino UNO (ATMEGA328P, not ATmega168)
LoRa Module (EBYTE E220-900T22D (868 MHz), E433T30D (433 MHz))
GPS Module (Generic)
AT-09 (HM-10) Bluetooth Low Energy Module
iOS or Android device

APPS

Arduino IDE

Wiring.

Let’s Start Building. The circuit is so simple, there are a few connections to be made.

Сonnecting the LoRa module

Arduino Pins	 	  LoRa Pins
Pin 2		——>		RX
Pin 3		——>		TX
Pin 4		——>		M0   
Pin 5		——>		M1  
Pin 6		——>		AX    
5V		——>		VCC
GND		——>		GND

Connecting the GPS module

Arduino Pins	 	  GPS Pins
Pin 7		——>		TX
Pin 8		——>		RX
5V		——>		VCC
GND		——>		GND

Connecting the BLE module (optional)

Arduino Pins		  Bluetooth Pins
RX (Pin 0)	——>		TX
TX (Pin 1)	——>		RX
5V		——>		VCC
GND		——>		GND

Add a 5V stabilizer for battery power (like LM7805).

Uploading Sketch

Three steps:

Download or copy the Sketch from here: https://github.com/Udj13/AGLoRa/blob/main/AGLoRa-tracker.ino Just one file! Easy!
Change the “MY_NAME” setting. Сheck the debug mode is off.

char MY_NAME[NAME_LENGTH] = "Morty";
#define DEBUG_MODE false

Upload a Sketch to an Arduino.

NOTES:

Value “NAME_LENGTH” must be same for all your devices

Remove Bluetooth module Tx-Rx connection before uploading the program!

Install the app on your phone.

Source code is available for free on github: https://github.com/Udj13/AGLoRa-client-flutter
You can download the iOs app from Apple App Store: https://apps.apple.com/ru/app/aglora/id1600250635
You can download the Android app APK from here: https://github.com/Udj13/AGLoRa-client-flutter/releases/tag/AGLoRa (or https://shlyagin.ru/aglora.apk)

Permissons:

Bluetooth permission required to connect to your AGLoRa device
Location permission is required to calculate distance between AGLoRa devices. Without this permission the app will only show the coordinates.

How to use the AGLoRa Client App?

Install application on your device
Turn on the AGLoRa trackers. When the GPS data is correct, the built-in LED will turn on.
Scan for available devices
Select your Bluetooth module from the List (“AGLoRa”)
Wait to receive data from other trackers

Description in Russian: https://bitlite.ru/aglora-lora-gps-tracker/

xalejandrow / AGLoRa