The watcher : motion detector light starter
this is simple motion detector with arduino. It detects person in room and it trigger the light for 30 seconds for each trigger.It is small in size and very easy to connect to the main line. You can power the module via 5v mobile charger(USB).
here is the circuit diagram for this project
you can use the arduino pro mini for more flexibility. here is my code for the project.
click the link for codes and how to make :
http://www.instructables.com/id/Ultrasonic-Motion-Detector-Light-Starter-THE-WATCH/step2/The-coding/
click the link for video:
https://www.youtube.com/watch?v=iMs63-4nVs8
click the link for how to use ultrasonic sensor video
https://www.youtube.com/watch?v=GXJH6pD0u3c
