Custom firmware for Vaisala RS41 and Graw DFM-17 radiosondes with support for amateur radio use. Ideal for tracking high-altitude balloons. Supported modes include APRS, Horus 4FSK mode, CATS, morse code (CW) and additional digital modes like WSPR and FT8 via Si5351.

ESP32 Based GPS Navigator with OSM offline maps. Multi GNSS - (Under development)

UART NMEA GPS library for Raspberry Pi

A lightweight APRS tracker for balloons

DIY GPS GSM vehicle tracker based on SIM808 module and ATMEGA328P

This is simple GPS vehicle tracker base on SIMCOM SIM7000E/G/A module. Works for GSM/LTE-M networks around the globe

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the cheapest GPS tracker / GPS locator based on AVR ATTINY2313/4313 or ATMEGA328 (ARDUINO) and SIM800L GSM module

STM32 and SIM808 GPS tracker with a custom PCB design and support for MQTT and AES-128 encryption.

GPS-based local relative navigation system for group of up to 6 members

TTGO T-Motion Tracker for TTN Mapper using EU (868 MHz) and US (915 MHz) frequencies

It uses GPRS and GPS technologies which allows to easily perform realtime tracking. Here idea is simple: read the GPS coordinates (longitude and latitude) and send them by using HTTP request to a web server. Then use a web browser to load the PHP webpage which uses GOOGLE MAPS to show the location in realtime.

GPS tracking software

CC1312R1 Sub-G Solar power asset tracker

📌 LoRa GPS Tracker using Grove LoRa-E5 and the possibility of real-time tracking on the map

A GPS tracker based on MSP430 microcontroller

The GPS Informer is a Telegram bot software for informing authorized users about current state of Coban TK103 gps tracking device

A gps tracking system with shortest path algorithm and more implemented on bare-metal TM4C123GXL tivac micro-controller

An open-source, modular, Arduino based tracking system with HAM radio based APRS and cellular data transmission capabilities.

The open firmware for the RAK7200 LoRa Tracker