“Because every step should be a safe step.”

SafeStep is an IoT-powered smart assistance and tracking system designed to help locate visually impaired individuals in real-time.
It combines ESP32, ultrasonic sensors, GPS, Supabase, and a web dashboard to enable live location tracking, obstacle alerts, and emergency monitoring.

🌐 Live Dashboard: https://safestep.thenicedev.xyz
📘 Detailed Documentation: SafeStep on Notion

SafeStep is a smart wearable device for blind or visually impaired users that:

• Detects nearby obstacles using an ultrasonic sensor and buzzer alerts.
• Tracks real-time GPS coordinates using TinyGPS++.
• Sends live data securely to Supabase via HTTPS.
• Broadcasts updates to the web dashboard using WebSockets.
• Allows caregivers or family members to locate the user instantly via the dashboard.

┌────────────────────┐
│   SafeStep Device  │
│  (ESP32 + Sensors) │
└────────────────────┘
         │  
         │  HTTPS (JSON)
         │  
         ▼
┌─────────────────────┐
│     Supabase DB     │
│  (Data + Auth + API)│
└─────────────────────┘
         │  
         │  WebSocket
         │  
         ▼
┌────────────────────────────────┐
│   Web Dashboard                │
│ https://safestep.thenicedev.xyz│
└────────────────────────────────┘

• ✅ Ultrasonic Distance Detection Buzzer beeps at different rates depending on how close obstacles are.

• 📡 GPS Tracking Sends latitude, longitude, speed, and timestamp to Supabase.

• 🔒 Secure HTTPS Uploads Uses WiFiClientSecure and Supabase REST API for encrypted data transmission.

• 🌍 Realtime Web Dashboard Displays user’s last known location and status via WebSockets.

• 🔋 Battery Powered Supports single or multiple 18650 cells with TP4056 charging.

• Distance measured via HC-SR04
• Buzzer feedback based on proximity
• GPS handled using TinyGPS++
• Secure POST to Supabase using HTTPClient
• Data serialized with ArduinoJson

1. Open the /firmware/SafeStep.ino file in Arduino IDE or PlatformIO.

2. Select ESP32 Dev Module.

3. Install dependencies:

   • TinyGPSPlus
   • ArduinoJson
   • WiFi
   • HTTPClient

4. Update your WiFi credentials and Supabase key in the code.

5. Upload the sketch.

• Power via USB or 18650 battery through TP4056.
• On boot, it connects automatically to Wi-Fi and starts sending data.

• Visit SafeStep Dashboard to view live tracking and status.
• The data updates in real-time via Supabase Realtime API.

{
  "latitude": 23.7808875,
  "longitude": 90.2792371,
  "altitude": 7.8,
  "speed": 2.3,
  "course": 175.6,
  "satellites": 9,
  "hdop": 0.9,
  "gps_date": "2025-10-07",
  "gps_time": "18:24:52"
}

SafeStep aims to provide a low-cost, scalable solution to assist visually impaired individuals by enhancing mobility safety and location awareness.

This project combines IoT innovation and real-time cloud integration to make life easier and safer — one step at a time.

👨‍💻 Sarker Ayon Student at Rajuk Uttara Model College 🌐 thenicedev.xyz

This project is licensed under the MIT License — feel free to fork, contribute, and innovate.

SafeStep – A Smarter Path for the Visually Impaired.