Hi, I am working on a project where when the PIR detects movement and the ultrasonic sensor reads below a given value it triggers a relay and a media player off a digital output pin. If during the playing of the video the PIR sensor detects no movement it stops the video and releases the relay Cu…

Ultrasonic Sensor & PIR

system May 1, 2014, 8:45am 5

sorry - very new to this. What do you mean by a twin?

Thanks

Matt