Subject:
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Re: Ultrasonic Rangefinder
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sun, 21 Sep 1997 06:38:22 GMT
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Original-From:
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Bill Richman <BILL_R@INETNEBR.stopspammersCOM>
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Viewed:
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1544 times
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I've used the sonar board and transducer from several Polaroid "Pronto
Land Cameras" for just that purpose in that past. I don't know how
these compare to the Spectra; I would assume they're similar if not
identical. There was an article in an old BYTE magazine (also
reproduced in one of the Ciarcia's Circuit Cellar books) that dealt
with cutting a couple of traces and adding a couple of jumpers to make
the sonar usable with a computer. I think my copies are in the
basement; if anyone is interested, perhaps I could scan the pictures
showing what to cut and jumper and put them on my web page; I have to
think that after 10 or 15 years, Steve Ciarcia wouldn't mind...
On Sat, 20 Sep 1997 19:42:21 -0400, Darkman <lroska@cyberus.ca> wrote:
> Did anyone ever opened up a Polaroid Spectra
> Instant camera?
>
> I did. The sonar rangefinder is almost identical to the
> Polaroid 6500 exept there are some problems that I encountered
>
> 1) BLNK and BINH have no efect on the ECHO output
> 2) The ECHO signal once received does not return to logic low until
> power off
>
> If anybody else ever got it to work please let me know!
>
> If it works it sure beats paying $50 for the 6500.
>
> I picked up the camera for $12 at a pawnshop.
-Bill Richman
bill_r@inetnebr.com
http://incolor.inetnebr.com/bill_r
-------------------------------------------------------------------------------
"When they took the fourth amendment, I was quiet because I didn't deal drugs.
When they took the sixth amendment, I was quiet because I was innocent.
When they took the second amendment, I was quiet because I didn't own a gun.
Now they've taken the first amendment, and I can say nothing about it."
-www.paranoia.com
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Message is in Reply To:
 | | Ultrasonic Rangefinder
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| Did anyone ever opened up a Polaroid Spectra Instant camera? I did. The sonar rangefinder is almost identical to the Polaroid 6500 exept there are some problems that I encountered 1) BLNK and BINH have no efect on the ECHO output 2) The ECHO signal (...) (27 years ago, 20-Sep-97, to lugnet.robotics.handyboard)
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