Berg, Russ: SAS wrote:
>
> Hi, I am putting together a small robot to compete in a "Sumo" style
> competition in a few months, I have my basic algorithym worked out and have
> tested it on a bread board with a 16c55 and LED's, but I am wondering what
> would be the best way to detect my opponent, the competition ring is about 5
> foot diameter, I am thinking using photo-transistors, I wouldn't need to
> have a longer detection range than say 2 feet, anyway if someone has a web
> page or knows of where I could find some good information I'd appreciate it.
>  -Russ

I can remember that somebody made a PIC program called "sona-pic"
designed to control a Polaroid ultrasonic module. As far as I can
remember it has a range of several feet.

Gael