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'Cheap Sonar Sensor?'
1995\11\04@163147 by Gerry Smith

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I am in need of a low powered, cheap sonar sensor to take the distance of
objects.  I saw a diagram in the Basic Stamp App note #12 (parallax) but
it seems to need quite a few parts.  Does anyone know of a sensor that is
simpler?  There was a diagram posted here I believed but I must have missed
it.  If anyone can help I'd greatly appreciate it.  Thanks in advance.

1995\11\06@184753 by William D. McMillan

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Well, there's a fairly simple DIY sonar circuit in Gordon McComb's "Robot
Builder's Bonanza."
$16.95 from TAB  books.

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