Thanks for the reply, berkeman. Sorry, for the late response I have been busy with school.
36kHz is typically used for remote control applications. (Anywhere from 30-60kHz)
I have yet to pick out the IR transmitter and receiver circuits because I have never dealt with IR before. So I've been...
http://www.machineguardsolutions.com/images/lightcurtain2.jpg
A light curtain seems like a basic communication system setup (TX & RX).
But what kind of signal are you trying to send and receive? How should the receiving end get processed?
How do you deal with crosstalk from using...