PIR Motion Sensor Kit

Overview

This DIY project builds a motion-activated security light. An Arduino Nano reads a PIR motion sensor and switches an LED (with a buzzer alert) the moment movement is detected.

How It Works

1. The PIR sensor detects infrared heat changes when a person moves nearby.
2. It sends a signal to the Arduino Nano.
3. The Nano lights the LED and sounds the buzzer while motion is detected, then switches off when things are still.

Complete Parts List

You Will Also Need

A USB-A to USB-C cable to connect the Arduino Nano C-Type to your computer and upload code — not included in this kit.

Applications

• Security lighting - hallway, garage or cupboard lights that switch on with movement
• Intruder alert - a simple motion alarm
• Sensor basics - learn digital input and output together

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 ESP8266 board support, where applicable) installed to upload the code. No soldering is required for this build. You'll also need a USB-A to USB-C cable to connect the board — not included.

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.