Subject:
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Ultrasonic Sensor Without Use Of A Microcontroller
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Sun, 28 Sep 2003 11:40:35 GMT
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Viewed:
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2756 times
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Hi,
I found this website a while back,
<link>http://www.btinternet.com/~leerwilson/design.html<link>
and I decided to actually build the circuit he designed at the bottom of the
page. I was wondering if anyone else has built it? I'm getting really jumpy
readings from it, for example, at a fixed distance of say 60cm from the
sensor,
the values keep jumping around. Is there any way to combat this via
programming?
The sensor is operating at 40kHz. I tried emailing the guy who made the
website
but the email address doesn't exist as it's extension is @btinternet.com,
which
has now been changed.
If anyone has any advice as to how this circuit could be optimised to work
better, i'd really appreciate it. I only built this circuit because i don't
have
access to a PIC system and I can't really afford to spend £150 on a student
kit....me being a university student now!! lol
Cheers
Vik
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