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Build a Smart Dustbin Using Arduino Uno – Beginner Friendly Project

Looking for a fun and practical project to get started with Arduino? In this tutorial, you’ll learn how to build a Smart Dustbin that automatically opens its lid when someone approaches. Using an ultrasonic sensor to detect proximity and a servo motor to lift the lid, this project introduces the fundamentals of sensors, motion control, and embedded automation.

It’s a great DIY project for school, science fairs, or just to make your space smarter!

Components Used:

• Arduino Uno – the microcontroller brain of the project

• SG90 Servo Motor – controls lid movement

• Ultrasonic Sensor (HC-SR04) – detects distance

• Jumper wires and breadboard

• Dustbin or box with a movable lid

Arduino Code & Circuit Diagram:
View the full schematic and code on the project page → Smart Dustbin on Tinkerzy

Suggested Image Slots:

• Close-up of sensor mounted on dustbin

• Breadboard connections with Arduino

• Servo installation under the lid

• Screenshot of code/circuit

Step-by-Step Instructions:

Step 1: Prepare the dustbin by cutting a slot or hinge in the lid for servo movement.
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Step 2: Mount the ultrasonic sensor on the upper front of the bin, ideally above the opening.

Step 3: Connect the HC-SR04 ultrasonic sensor to the Arduino:

Step 4: Attach the SG90 servo motor:

Step 5: Secure the servo to the lid so it can lift when activated by the sensor.

Step 6: Upload the Smart Dustbin code using Arduino IDE. The servo should move when a hand is detected within 20 cm.
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Step 7: Power the Arduino with a USB cable or 9V battery, and test it! The lid should automatically open and close based on your hand’s distance.

What You’ll Learn:

• How ultrasonic sensors measure distance

• Basics of servo control with Arduino

• Creating sensor-based automation systems

• Wiring and coding for simple IoT devices

Stay Updated: Follow me on Instagram → @drab_tech for behind-the-scenes, Q&A, and more builds

For Business Enquiries: Email – drabtech@gmail.com

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Explore More Arduino Projects
Want to make a Bluetooth bot, RC car, or home automation system?
Check out the full project list → Browse Projects on Tinkerzy

This guide is for educational purposes only. Always build responsibly and avoid republishing content without permission.