dave, im trying to do a simple obstacle detector that lightens a typical LED when an obstacle is in the way... ive already got the pir sensor.. problem is i dont know how to put it, cause there are three pins (a,b,c) and dont know which one is - + or to proper connect it to a breadboard for it to function with the LED
as what steve showed thanks, i think i needed a transistor and an IC for it to work..
and im only doing 1 sensor. like an obstacle sensor.