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Thread: Distance Meter implemented with a PIC?
face BY : James Cameron email (remove spam text)

I would use Radar.

Depends on the culture.  Some driving communities use a half second
response gap, some use three or four.  Lots of range in the middle.

For a half second at city traffic density, most likely ultrasound would
work, but a vehicle following speed control unit would be most used on
longer distance travel and often outside cities, hence the speed is
higher and the distance is much greater.

James Cameron                                    (cameronspamBeGonespamstl.dec.com)
Digital Equipment Corporation (Australia) Pty. Ltd. A.C.N. 000 446 800

<36350779.DE697300@stl.dec.com> 7bit

See also: www.piclist.com/techref/microchip/devices.htm?key=pic
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