PupProof – Blockchain-Powered Smart Dog Feeder

📝Overview

PupProof is a next-gen smart dog feeder that fuses IoT, AI, and Blockchain to ensure fair feeding, transparent proof storage, and gamified rewards.

• Arduino + Servo Motor vending prototype
• Azure Computer Vision → Puppy vs. Adult detection
• MongoDB → Prevents duplicate feeding within timeframe
• IPFS (Pinata) → Tamper-proof refill proofs
• MetaMask login → Wallet-based identity
• PupCoins → Reward system tokens

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Preview

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✨ Key Features

🐕 IoT + AI

• Arduino Nano + Servo Motor for food dispensing
• Azure CV validates uploaded dog images

🗂️ Fairness Control

• MongoDB prevents repeated feeding attempts
• Logs every request with userId, timestamp, machineId

🌐 Blockchain Power

• IPFS + Pinata → Immutable refill proofs
• MetaMask → Decentralized login & wallet mapping
• PupCoins → Gamified rewards → tokens

🎮 Gamification

• PupCoins credited for verified refills
• User dashboard shows activity & rewards
• Admin verifies proofs before rewarding

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🖼️ Workflow

1. 🐕 Dog Approaches System

   • Current: User uploads a noseprint image
   • Future: Sensors/camera will capture noseprint automatically

2. 🤖 Dog Identification

   • Azure CV classifies →
     • Puppy → 3 sec feed / 3 hr cooldown
     • Adult → 5 sec feed / 5 hr cooldown
   • MongoDB checks last feed record → If dog already fed, cooldown time is shown

3. ⚙️ Feeding via IoT

   • If eligible → Node.js communicates with Arduino (serial port)
   • Servo motor dispenses food for required duration

4. 🔒 Proof Generation

   • Captured noseprint → Uploaded to IPFS via Pinata
   • CID stored in MongoDB → Immutable & tamper-proof record

5. 🌍 Community Refill Action

   • Users nearby can refill the food machine
   • Upload before/after images → Stored on IPFS
   • CID logged in database

6. 🛡️ Admin Verification

   • Admin reviews refill proofs
   • ✅ If valid → Approves refill & rewards user
   • ❌ If invalid → Penalty applied (-0.5 PupCoins)

7. 🎮 Rewards (Blockchain Simulation)

   • Users log in via MetaMask wallet
   • PupCoins (simulated tokens) credited to balance
   • Real-time balance & activity visible on user dashboard

🛠️ Tech Stack

• Frontend: HTML, CSS, EJS, JavaScript
• Backend: Node.js, Express.js
• Database: MongoDB
• AI: Azure Computer Vision API
• IoT: Arduino Nano, Servo Motor, LED
• Blockchain: IPFS (Pinata), MetaMask with simulated tokens

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⚡ Quick Start

# Clone the repo
git clone https://github.com/yourusername/pupproof.git
cd pupproof

Install dependencies

npm install

Run server

node server.js