Build a GPS Tracker with Seeed Studio XIAO ESP32-S3 and Geofencing

This GPS tracker project integrates a Seeed Studio XIAO ESP32-S3 microcontroller with a NEO-6M GPS module to establish real-time location monitoring without cellular hardware. The NEO-6M module utilizes an external GPS antenna to acquire signals from orbiting satellites, processing these signals to continuously calculate precise geographical coordinates, including latitude, longitude, and altitude. Through serial communication, the TinyGPSPlus library parses these raw NMEA sentences on the ESP32-S3 into usable numeric data. The ESP32-S3 leverages its built-in Wi-Fi capabilities to connect to a local wireless network, using the WiFiClientSecure library to securely transmit the processed location data to the GeoLinker cloud platform. Within the Arduino IDE environment, the GeoLinker library facilitates this cloud connection and supports geofencing logic. If the tracker's coordinates cross predefined virtual boundary parameters stored or processed within the system, the platform can trigger automated alerts such as SMS notifications. The entire circuit is prototyped on a breadboard using connecting wires to route power and data between the microcontroller and the GPS module.