Smart Dustbin - Automatic Waste Segregation System

An intelligent dustbin that automatically detects and segregates wet and dry waste using Arduino.

🚀 Features

• Automatic object detection with ultrasonic sensor
• Wet/dry classification using moisture sensor
• Servo-controlled compartment opening
• Real-time Serial monitoring

📋 Components

• Arduino Uno
• HC-SR04 Ultrasonic Sensor
• Soil Moisture Sensor
• SG90 Servo Motor

🚀 Quick Start

1. Hardware Setup

   • Connect HC-SR04: Trig=12, Echo=11, VCC=5V, GND=GND
   • Connect Moisture Sensor: SIG=A0, VCC=5V, GND=GND
   • Connect Servo: Signal=8, VCC=5V, GND=GND

2. Software Setup

   • Install Arduino IDE
   • Open src/smart_dustbin.ino
   • Select: Tools → Board → Arduino Uno
   • Select correct COM port
   • Click Upload

3. Calibration (Important!)

   • Test moisture sensor with dry and wet items
   • Adjust wetWasteThreshold in code if needed
   • Default: <600 = Wet, ≥600 = Dry

🐛 Troubleshooting

• Servo not moving? Check power supply
• False triggers? Adjust ultrasonicDistanceCM
• Wrong waste detection? Calibrate moisture threshold

📁 Files

• src/smart_dustbin.ino - Main Arduino code