This is a PIR motion sensor device that works with the arduino uno. In order to make it covert enough to be placed in multiple settings and portable enough to fit most places, I decided to make the case for it appear as a speaker.
The inspiration for this project:
My cat is a jerk. One of his favorite things to do is to alarm me that he is hungry every morning at 4am by sitting on my dresser and knocking random things over until I wake up. Unfortunately, my dresser is also parallel to my craft table, so he has turned my dresser into a work of art by walking across my oil paintings and jumping up there (and also throughout the rest of the house). I could lock him out of my room, but then he cries outside the door all night, so I've been trying to come up with a solution to this problem.
After looking through Instructables and finding out what is possible with the arduino, I decided to make a motion sensing device for my dresser that will play cat repelling noises until Mr. Moe is trained out of his annoying behavior.
Step 1: Materials you will need:
The Motion Sensor:
V battery clip
2.1mm power plug
Various lengths of wire
PIR motion sensor
Piezo buzzer alarm (9V or lower)
Heat Shrink Tubing
USB cable (to arduino)
Tools for Motion Sensor:
The Speaker Case:
Phillips Panhead screws - 1/4" (2)
Phillips Panhead screws - 1/2" (4)
Interior Construction Adhesive
Black paint (flat)
Tools for Speaker Case:
Drill (with various bits)