MGBin – Monkey Guard Smart Dustbin

MGBin (Monkey Guard Bin) is a smart, hybrid automation dustbin designed to prevent monkeys and other wildlife from accessing and scattering waste in urban, tourist and residential areas.
It combines IoT-based intelligence with mechanical fail-safe automation, making it reliable, scalable and suitable for Smart City deployments.

🎥 Prototype Video Documentary

📽 Watch full working prototype demonstration here:
👉 Click to Watch Documentary

This documentary demonstrates:

• Mechanical pivot-door working
• Automatic flap motor control
• Mechanical gravity-based fail-safe mode
• Real-life testing scenarios

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🚨 Problem Statement

In many Indian cities, monkeys and other wildlife frequently open traditional dustbins, scattering garbage across streets, parks and public places.
This causes:

• Poor sanitation and unhygienic environments
• Spread of diseases
• Continuous cleaning costs
• Human–animal conflict in residential and tourist zones

Conventional bins provide no protection against animal tampering.

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💡 Proposed Solution

MGBin introduces a hybrid automation system that allows only humans to deposit waste while completely blocking animals from accessing it.

The system works in two intelligent modes:

1️⃣ Smart IoT Mode (Primary)

• An ESP32-CAM detects whether the approaching object is a human or an animal (monkey).
• For humans → the flap opens automatically using a gear motor.
• For animals → the flap remains locked, preventing access.

2️⃣ Mechanical Gravity Mode (Fail-Safe)

• If sensors, power, or electronics are unavailable, the bin continues to function mechanically.
• A pivoted gravity-balanced internal door allows humans to deposit waste but stays locked against animal interference.

This ensures 100% operational reliability even during power failure or remote deployments.

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⚙️ Key Features

• Dual-mode hybrid automation (IoT + Mechanical)
• ESP32-CAM based animal/human detection
• Automatic flap control using gear motor
• Gravity-based fail-safe mechanical design
• Weather-resistant and tamper-proof build
• Low maintenance and long operational life
• Cost-effective and scalable manufacturing

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🔁 How It Works

1. A person approaches the bin  
2. ESP32-CAM analyzes object type  
3. If human → motor opens flap  
4. Waste is deposited  
5. Flap auto-locks again  
6. If animal detected → flap remains locked  
7. In power failure → gravity mechanism allows human-only disposal  

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🧠 Automation Logic

Detection	Action	Result
Human detected	Motor opens flap	Trash accepted
Animal detected	Flap locked	Access denied
No power	Mechanical pivot door works	Manual human access

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⚙️ Mechanical Flow Diagram

+--------------------------+
|     Human Approaches     |
+--------------------------+
              |
              v
+--------------------------+
|   Waste Dropped from     |
|         Top Slot         |
+--------------------------+
              |
              v
+--------------------------+
|   Pivoted Internal Door  |
|   Receives Waste Load   |
+--------------------------+
              |
              v
+--------------------------+
| Door Rotates Downward    |
| (Gravity Controlled)    |
+--------------------------+
              |
              v
+--------------------------+
| Waste Falls into Main    |
| Collection Chamber      |
+--------------------------+
              |
              v
+--------------------------+
| Door Returns to Locked  |
| Position Automatically  |
+--------------------------+
              |
              v
+--------------------------+
| Animals Blocked from    |
| Accessing Garbage       |
+--------------------------+

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🔒 Animal Blocking Logic

Animal tries to access → Door remains locked → No leverage / no grip → Access denied → Garbage stays inside

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🛠 Technologies & Components

• ESP32-CAM
• Gear Motor
• Mechanical Pivot Door
• Gravity Balanced Design
• Structural Metal / Polymer Body
• Smart Automation without Dependence on Electricity

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🌍 Impact

• Improves public hygiene and sanitation
• Prevents garbage scattering
• Reduces human–wildlife conflict
• Saves municipal cleaning costs
• Enables Smart City and Swachh Bharat initiatives

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🚀 Future Scope (Round-2 Enhancements)

• AI-based waste detection using ESP32-CAM for improved human vs animal recognition
• Smart waste segregation using multi-sensor detection (metal, moisture, liquid, IR, camera)
• Automatic internal motorized flaps to separate wet, dry, plastic, metal and liquid waste
• Organic waste composting & fertilizer conversion module
• Ultrasonic fill-level detection with cloud dashboard monitoring
• Solar panel & rechargeable battery power backup
• LED indicators and auto-lid for hygienic public usage
• Centralized IoT analytics dashboard for municipal monitoring
• Incentive system to promote responsible waste disposal

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👥 Team

Name	Role
Mayank Gangawar	Project Lead & Designer
Manthan Makhija	Coder
Sachin Shakya	Circuit Designer
Shobit Rajpoot	Mechanical Design Engineer

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Video Overview

https://youtu.be/zOyi-Keoz-M