TK has combined a PIR with an Arduino to create a smart safety light for the house or workshop. Follow along as this gets built out into a more extensive project.

Here is an ultra simple Arduino Night Alarm project wired around a handful of inexpensive and easily available components. One advantage of using Arduino as a security system is the flexibility!

Bang—motion sensor. Project Ideas Depending on the sensors and actuators you use and how you combine them, this fairly simple concept can do some surprisingly complex things.

This breadboard compatible package combines an ESP32-S2 module with a top-mounted PIR sensor, making it a turn key solution for all sorts of motion sensing projects.

We’re still not sure exactly how [connornishijima]’s motion detector works, though many readers offered plausible explanations in the comments the last time we covered it. It works well… ...

Anyone searching for an Arduino project to keep them busy this weekend may be interested in a new motion activated wildlife camera constructed using the Adafruit Feather M0 development board ...

The PIR motion sensor is a key component in this project. It detects infrared radiation from moving objects, such as humans or animals, and sends a signal to the Raspberry Pi.

This project solves that problem by hooking up LED lights beneath a bed, then triggering them with a motion controller and an Arduino.