DIY - Smart Dustbin Kit - Arduino Nano, Ultrasonic Sensor, SG90 servo motor

Overview

An automatic, touch-free dustbin lid that opens when someone approaches and closes again after use — built around an Arduino Nano, an ultrasonic distance sensor, and a servo motor.

How It Works

1. The HC-SR04 ultrasonic sensor continuously measures the distance to anything in front of it.
2. When an object or hand comes within range, the Arduino Nano detects the change and signals the servo.
3. The servo opens the lid, then closes it again automatically after a short delay.

Complete Parts List

Applications

• Touch-free waste bins for homes, offices, and kitchens
• Hygiene-focused automation for shared/public spaces
• Smart-home projects combining distance sensing and motor control

Full Build Guide

Step-by-step instructions and code for this exact project are on Project Hub.

FAQ

Do I need coding experience? No prior experience is required — this kit is built around one specific project, and the full code is freely available. See the build guide above.

What tools do I need beyond what's included? A computer with the free Arduino IDE (or ESP32/ESP8266 board support, where applicable) installed to upload the code. No soldering is required for this build.

Can I reuse the parts afterward? Yes — every component in this kit is a standard, reusable part you can use in future projects, not a single-use kit.