Smart Trash Can Auto-Open Kit with Arduino Uno & Ultrasonic HC-SR04: Build a Touchless Bin with OLED Fill Indicator

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

Wave your hand and watch a trash can sense your approach — no touching, no germs. This kit transforms an HC-SR04 ultrasonic sensor into a smart bin monitor. It shows fill levels on a 0.96‑inch OLED as a tank icon that rises from 0% to 100% and shifts through green, yellow, and red zones, so you always know when it is time to empty.

What You'll Build

A fully working prototype of a touchless trash can. The ultrasonic sensor measures hand distance; get close and the display reacts like a real bin opening. The OLED draws a tank fill animation with colour-coded alerts that change as the bin fills. You will have a working demo you can mount near any small bin or show at a science exhibition.

What You'll Learn

• How the HC-SR04 ultrasonic sensor measures distance using echo pulses
• Mapping raw sensor readings to a 0–100% fill level
• Controlling a 0.96‑inch OLED with the Adafruit SSD1306 library
• Creating green, yellow, and red zones to turn data into visual alerts

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This beginner kit is perfect for CBSE Class 6–10 students taking their first step into automation, ATL Tinkering Lab projects, and curious learners aged 5–15 who want to build a real smart-home gadget. It also fits science exhibition models and introductory IoT workshops where a hands-on demonstration matters more than theory.

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.