Message-ID:	<39920986.8FC0CFF4@flash.net>
From:	Richard Lamb <lamb01 AT flash DOT net>
Organization:	Earth
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Newsgroups:	alt.electronics,alt.microcontrollers.8bit,comp.os.msdos.djgpp,comp.os.msdos.programmer
Subject:	Re: I need help with finding a sonar system
References:	<sxqh5.115527$ef6 DOT 1654931 AT news1 DOT rdc1 DOT ab DOT home DOT com> <HDIi5.11577$ZL5 DOT 750630 AT bgtnsc07-news DOT ops DOT worldnet DOT att DOT net> <398EED8C DOT DF0E8FAA AT flash DOT net> <8ms98a$46b$1 AT nnrp1 DOT deja DOT com>
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Date:	Thu, 10 Aug 2000 01:43:53 GMT
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

The Poloroid module is a lot harder to 
interface to...Needs transistor swirches
to replace the mechanical trigger...
Also tougher to "read" the range (forgot why tho),
and can't be set to read close echos like the TI 
module.

oopic_developer AT my-deja DOT com wrote:
> 
> In article <398EED8C DOT DF0E8FAA AT flash DOT net>,
>   lamb01 AT flash DOT net wrote:
> > TI used to make a sonar evaluation kit.
> > Had all the electronics on it to drive
> > a polaroid transducer.  I think I may
> > still have a couple them somewhere...
> >
> 
> You can also get a sonar unit from an old Polaroid camera
> http://www.robotprojects.com/sonar/scd.htm
> 
> I would be interested to see how/if it works in water.
> 
> --
> SMS
> 
> ================================================
> = SMSavage AT oopic DOT NS DOT com   http://www.oopic.com =
> 
> Sent via Deja.com http://www.deja.com/
> Before you buy.

-- 
Richard Lamb
--
http://www.flash.net/~lamb01

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