• Team Lead: Abijith AS - Lourdes Matha College of Science and Technology
• Member 2: Anandhu Krishna S - Lourdes Matha College of Science and Technology

Biscuit Protector is an unnecessarily advanced security system designed to protect biscuits from unauthorized snack attacks.

It detects when someone tries to grab the biscuits using an ultrasonic sensor, sounds an alarm, displays the status on the OLED, and sends a notification to the user's phone through the connected application.

People keep stealing biscuits.

Friends, roommates, classmates, and even family members can become potential biscuit thieves when nobody is watching.

Clearly, this extremely serious problem required an unnecessarily complicated technological solution.

We built Biscuit Protector — a security system dedicated to protecting a biscuit box as if it contained classified government documents.

The ultrasonic sensor monitors the area around the biscuit box. When someone gets close enough to attempt a biscuit theft, the system detects the suspicious activity, triggers an alarm, updates the OLED display, and signals the user's phone.

Because apparently hiding the biscuits was not secure enough.

For Software:

• C++
• Flutter
• Arduino IDE
• Embedded Systems Programming
• Sensor Interfacing
• Mobile Application

For Hardware:

• Arduino Uno
• ESP32
• STM32
• HC-SR04 Ultrasonic Sensor
• DHT Sensor
• PIR Sensor
• OLED Display
• Buzzer
• LEDs
• Breadboard
• Jumper Wires
• Cardboard Box
• USB / Power Connections

For Software:

1. Install Arduino IDE.
2. Connect the controller to the computer through USB.
3. Install the required libraries.
4. Open the Biscuit Protector Arduino source code.
5. Select the correct board and COM port.
6. Upload the program.

Install Flutter and clone the project repository.

flutter pub get

### Project Demo
# Video

[![Biscuit Protector Demo](https://img.youtube.com/vi/VIDEO_ID/0.jpg)](https://drive.google.com/file/d/19GtZQIFz04-_y_qQP-Jlvl1S4yf_Wtn-/view?usp=sharing)

[🎥 View Demo Video](https://drive.google.com/file/d/19GtZQIFz04-_y_qQP-Jlvl1S4yf_Wtn-/view?usp=sharing)

*The video demonstrates the Biscuit Protector detecting an attempted biscuit grab, triggering the alarm, displaying the security status, and sending the warning to the user's phone.*

# Additional Demos

### Flutter App

[📱 Download / Open the Biscuit Protector App](https://drive.google.com/file/d/1s_j8VLWnmApaUOHsFEwUDY-W0PCaPiyr/view)

*The Flutter application provides the user with live security information including connection status, detection status, distance, temperature, humidity, and alerts.*