PIR Pin “+” connects to Arduino +5 PIR Pin “-” connects to Arduino gnd PIR Pin “out” connects to Arduino Digital 2 Here is the Arduino code for the Parallax sensor int motion_1 = 2 ...

The important bit on this wireless sensor, the PIR sensor, connects with three pins – power, ground, and out. When the PIR sensor sees something it transmits a code the base station where the ...