Smart India Hackathon 2025

. Problem Statement ID - 25058 . Problem Statement Title - Detection and Prevention of Tampering in Weighing and Measuring Instruments . Theme - Smart Automation . Problem Statement Category - Hardware

Anti-Tampering IoT Kit for Weighing and Measuring Devices

A collaborative ESP32-based project submitted for the Smart India Hackathon 2025.
This system detects tampering using light, vibration, and magnetic field changes, and sends real-time alerts via a Blynk IoT dashboard.

Hardware Used

. ESP32 Dev Board
. LDR Sensor
. MPU6050 Accelerometer
. Reed Switch (LM393 module)
. Active Buzzer
. LEDs
. WiFi connectivity via ESP32
. Blynk dashboard for remote monitoring

Features

. LDR Sensor: Detects sudden light changes (e.g. lid opened)
. MPU6050: Detects vibration or impact, even slight movement
. Reed Switch: Detects magnetic tampering (lid displacement)
. Buzzer: Activates on any intrusion event
. LEDs: Visual feedback for LDR and MPU6050 triggers
. Blynk Dashboard: Displays sensor data and intrusion alerts in real time

Blynk Dashboard Mapping

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Sensor / Output	Virtual Pin
LDR Value	V0
LDR LED Status	V1
MPU6050 Jerk Value	V2
Motion Alert	V3
Reed Switch State	V4
Buzzer Status	V5
Intrusion Flag	V6

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System Overview

. Built for Smart India Hackathon 2025 as a group submission.
. While we weren’t selected, the project reflects strong teamwork, embedded design, and real-world prototyping.

Team

This was a collaborative effort by our SIH team.

License

Open source; feel free to fork, remix, or build on it.