Subject:
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Sonar Help!
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 20 Jul 1998 14:31:21 GMT
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Original-From:
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Sheridan Edward Ethier <seethier@zeus.uwaterloo.=NoMoreSpam=ca>
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Viewed:
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1195 times
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Hi,
I am having problems getting my Polaroid sonar to work properly.
Following Kent Farnsworth's directions, I have hooked up the sonar:
Sonar ====> Handy Board
ECHO TIC3 (Top position)
V+ TIC3 (Middle)
GND TIC3 (Bottom)
INIT PIN 9 of 2nd L293DNE socket
BINH ---1K--- PIN 1 of 2nd L293DNE socket
Installed a 0.1 uf capacitor in C7.
After running Kent's sonartst.c, the transducer makes the ticking
sound and 213" is displayed on the LCD. Unfortunately, it doesn't
change! If I unplug the ECHO, the display goes to 0". If I apply
a voltage to where the ECHO is supposed to be, I can produce varying
distances between 0" and 213".
Does anybody know what is going on?
Sheridan
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