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🔧 Components Required
Arduino Uno
HC-SR04 Ultrasonic
SG90 Servo Motor
Dustbin
9V Battery
📊 Project Info
Budget৳700–1,000
Build Time1–2 days
Difficulty2/10
Levelbeginner
XP Reward100 XP
⚙️ How It Works
Ultrasonic proximity detection automatically opens lid — touchless hygienic operation
LEARNING OUTCOME
After completing this project, you will understand the key electronics and programming concepts needed for real-world robotics.