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

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.

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.