Thanks for the info.  It was the TX-IR chip I was looking at.  It's a
Serial IR Transceiver for $6 + IR LEDs and Receiver.  So, a complete link
costs about $12 if you buy all the parts from Rentron.  Granted, $12 isn't
that much but I would like to build at least four of five robots able to
send and receive IR data, so it would be nice to be able to do the
communications with a single chip if I can while controlling the rest of my
robot as well.  Anyway, I have a great starting point and I'll be sure to
post my end result on the net when I'm finished.  Thanks again!

Scott


>Hi Scott,
>I was able to get Serial IR data to xmit at about
>100 ft in sunlight using the Rentron Schematic here
>http://www.rentron.com/Infrared_Communication.htm
>Fig. 6 is xmit and Fig. 7 is the receive.
>I set the pwm on the F628 to 38Khz and sent the data out
>at 300 baud.
>He gives an example of how to set the pwm here
>http://www.rentron.com/PIC16F628.htm.
>I am not sure what CHIP you need from Rentron ?
>If you mean the Holtek, you don't need them.
>Let me know if you have questions.
>
>Good luck,
>Kevin

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