Real-time GPS precision and motion awareness system powered by ESP32 + Android BLE app.

This project connects an ESP32 to an Android app using Bluetooth Low Energy (BLE).
The ESP32 continuously sends JSON-formatted telemetry data — including GPS coordinates, IMU readings, and motion parameters — to the app.
The Android app then parses, visualizes, and maps this data live using Google Maps API.

Designed to showcase insane GPS precision for fast-moving vehicles and real-time differentiation between walking, driving, or idling.
This helps maintain driver awareness and ensures better tracking of vehicle dynamics.

• BLE Connectivity – Seamless pairing and data streaming from ESP32
• Real-time JSON Parsing – Converts raw telemetry into readable metrics
• Live Map Updates – Shows ESP32’s position on Google Maps with automatic refresh
• Data Download – Save all session data as .json or .csv for analysis
• Motion Awareness – Detects transitions between walking, driving, and idle states
• Driver Focus – Alerts or indicators based on abnormal movements (e.g., sudden tilt, roll, or sharp acceleration)

BLE Connection Screen	Live Telemetry View	Google Maps Tracking

Naked Prototype	Prototype Box Mode

Components Used:

• ESP32 (with onboard BLE and WiFi)
• GPS module (e.g., NEO-6M or equivalent)
• IMU sensor (MPU6050 or similar)
• Power supply (Li-ion battery + step-down converter)
• Optional OLED display for local readout

1. ESP32 Initialization

   • Reads data from GPS and IMU sensors.
   • Formats it as JSON and transmits via BLE.

2. Android App Connection

   • Connects to ESP32 using bluetooth low energy.
   • Subscribes to BLE characteristic and listens for telemetry packets.

3. Data Visualization

   • Parses JSON to extract:
     • Latitude, Longitude
     • Speed
     • Roll, Pitch, Yaw
     • Ax, Ay, Az
     • Alert (if any)
   • Displays formatted data cards and map marker.

4. Google Maps Integration

   • Uses google_maps_flutter to render live GPS location.
   • Updates every second for smooth tracking.

5. Data Logging

   • User can tap Download Data to save all received data locally.

{
    "lat":13.1151227,
    "lon":77.6257996,
    "speed":6.672811508178711,
    "roll":0.0,
    "pitch":0.0,
    "yaw":0.0,
    "ax":0.0,
    "ay":0.0,
    "az":0.0,
    "gx":0.0,
    "gy":0.0,
    "gz":0.0,
    "alert":"Phone GPS",
    "activity":"Phone Tracking",
    "source":"Phone"
}