Something isn't working for me and maybe someone can help me I'm using this IR sensor http://www.kube.ch/downloads/pdf/kube_pyroelectric_c172.pdf
and I want to connect it to my Arduino. I'm using 5V as VDD , and the Signal(S) I'm connecting to the Arduino. my problem is that I get always 5V in the Signal leg I'm assuming the my problem is in the connection of the sensor. can someone help me maybe? or show me simple circuit I can build to cheek the sensor?