Build a Hands-Free Bin Lid Opener with Arduino Uno, HC-SR04 Ultrasonic Sensor & Servo

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

In busy industrial inventory aisles, medical labs, or even a smart home kitchen, touching bin lids slows you down and can spread contamination. This kit lets you build a completely touchless bin lid opener - place your hand near the HC-SR04 ultrasonic sensor, the servo swings the lid open, and after 3 seconds it closes automatically. You program the timing and behaviour yourself on an Arduino Uno, gaining hands-on experience that mirrors real-world factory automation.

What You'll Build

You'll assemble a fully functional automatic bin lid prototype on a breadboard. When the ultrasonic sensor detects a hand within your set range (adjustable up to 4 metres), the SG90 servo lifts the lid and holds it open for exactly three seconds - plenty of time to drop an item - then gracefully closes. Mount the circuit beside any household or workshop bin, power it with a 9V battery, and you have a smart, responsive system built entirely by you.

What You'll Learn

• How an HC-SR04 ultrasonic sensor measures distance and triggers events
• Controlling a servo motor with Arduino to open and close a lid precisely
• Writing Arduino C++ code with conditional logic and timed delays
• Assembling a real-world automation circuit on a breadboard without soldering

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Perfect for CBSE Class 11-12 students exploring embedded systems, first-year B.Tech ECE/EEE mini projects, ATL Tinkering Lab activities, and young makers age 11-15 building their first automation gadget. If you're preparing for a school science exhibition, a Smart India Hackathon prototype, or a parent looking for a hands-on weekend project with your child, this kit delivers real understanding of sensors and actuators in one compact package.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project - accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.