I am trying to decide if I can use an IR setup to determine if something is in range. I could use ultrasonic, but I wondered if IR might be easier. All I want is PIC watching the inputs and if the box is moved within a certain range (12"-16") turn on an LED. Simple in concept.... _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu