Motion Sensor Alarm

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overview and Video

The objective of this project is to learn how to create a motion sensor that triggers a red light and buzzer when it senses movement.

You can use this Arduino-controlled alarm to trigger a variety of outputs, such as lights, motors, or even a “welcome home” message when you approach your front door.

When this project is successfully built, the sensor will detect motion and trigger an alarm buzzer to sound and an LED to light up.

This is project 21 from the Arduino Project Handbook, V1 by Mark Geddes.

We built it on a WorkBench Project Development Kit from Phase Dock.



Arduino Controlled Motion Sensor Alarm

you will need

Major components

  • Arduino Uno

  • 400 pin breadboard

  • “Always-on” battery (optional; this project can be powered from your computer)

Small components

  • Active buzzer

  • Passive infrared (PIR) motion detecting sensor

  • LED light (the Elegoo 37 Sensor Kit has one LED; we recommend you purchase additional LEDs)

  • 2000 - 5000 Ohm resistor

  • Jumper wires

WorkBench 1007 with two 2x3 Clicks, one Arduino Slide

  • Optional: one 2x3 or 1x3 Click depending on the size of your battery

  • Optional: 1007 Cover


Resources

Arduino Project Handbook, Volume 1, by Mark Geddes; this is Project 21


Get a WorkBench PDK from Phase Dock.

Elegoo 37 Sensor Kit, V2.0 (for the buzzer and PIR sensor)