July 31, 2017
Description
A simple but elegant project to create a "pet zone alarm" in your house. It uses infrared motion detectors to sense when a pet (or small child) is moving through a doorway or hall and sends out a loud tone. It does not beep when a (tall) person moves through the same area. With a bit of training animals recognise where they are welcome - without having to use physical gates.
License:
Creative Commons - Attribution
RodLaird
