Hi,
I am trying to build a PIC IR Proximity Detector, the bascic TX circuit
is figure 2 on this page >>>
http://www.rentron.com/Infrared_Remote_Control.htm
If I add a small resistor (10-330 ohms) between the IR led and gnd,
it changes the distance the RX circuit detects a reflection from
(10cm -120cm)
So, I thought if I add a digital pot instead of manually changing
the resistor,
I could make a rudimentary IR Proximity Detector.
Problem Digikey only sells a 10k digital pot, I was hoping to find a smaller

one,like <= 1k, anybody know where I could get one ?
Is their an easier way to do this with a PIC ?
I already looked at the Sharp GP2D02, but I wanted someting cheaper.

Thanks in advance,
                   Kevin

P.S. I am a programmer not an EE, so my electronics background is limited.

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.