Tweaking4All.com - Testing and Playing with PIR sensors (motion sensor)
Motion Sensor Guide for a Flail Free Workplace — 1000Bulbs.com Blog
Buy APPControl Full-color LED Motion Sensor Face-changing Halloween Glowing Cover Trick Toy for Photo Taking at affordable prices — free shipping, real reviews with photos — Joom
Hacking a PIR Motion Sensor for Use As a Triggering Device. : 5 Steps (with Pictures) - Instructables
Hacking a PIR Motion Sensor for Use As a Triggering Device. : 5 Steps (with Pictures) - Instructables