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_hm
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Re: A family heirloom
_hm   7/8/2013 7:06:29 PM
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@Max: No. It is all pneumatic PID controller. Air is supplied at 15 to 30 psi. You can set P, I, D value for tunning the loop. I worked for Taylor Instruments Inc, Rochester and they manufactured them. As I understand, some organization currently do make them. They are very good for class I hazardous environment. Some pics for them:

http://www.google.ca/search?q=pneumatic+pid+controller&tbm=isch&tbo=u&source=univ&sa=X&ei=ZEXbUdmJCo6gyQH_34HoBw&sqi=2&ved=0CDgQsAQ&biw=1307&bih=647

 

SylvieBarak
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AVR action heroes, touch sensors and dragon boards
SylvieBarak   7/8/2013 3:55:58 PM
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Working at Atmel is a bit like being a kid in a candy store in terms of the weird and wonderful stuff I can steal, er, borrow to decorate my desk with. I started small... with a handful of colorful touch sensor boards nabbed from the 4th floor. I then pilfered an AVR man action hero from the creative lab (it is AMAZINGLY awesome and very hunky). Soon after I added a rather exotic looking AVR Dragon board to my collection, a couple of Arduino starter kits, some printouts of the infographics I've designed (on canvas they look super cool), some hexbugs... a half eaten bar of chocolate.

Still doesn't beat the electronic PCB shoe I used to have on my desk at EE Times... but oh well!

Leo Sieben
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ASR-33 Teletype Complete
Leo Sieben   7/8/2013 2:59:11 PM
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Let's make a deal...

Max The Magnificent
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Re: A family heirloom
Max The Magnificent   7/8/2013 10:50:18 AM
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@_hm: I love pneumatic PID controllers

I don't know if I'v ever seen a pneumatic PID controller per se, but I guess that depends on what we're actually talking about -- do you mean an electronoc PIC controller that controls a pneumatic system -- or do you mean the entire controller implemented using pneumatic techniques?


_hm
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Re: A family heirloom
_hm   7/6/2013 7:57:19 PM
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I have my first big digit digital clock of 1981 still clocking at main entrance. I have all my Elektors and those projects stored in various boxes. I love pneumatic PID controllers and analog sample and hold.

Max The Magnificent
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Re: A family heirloom
Max The Magnificent   7/6/2013 12:36:56 PM
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@David: If you'd seen my desk just a couple of weeks ago I'd have taken the "cluttered desk" prize for sure ... bust since I got my office tidid up, I'm desperatly trying to keep it that way ...

David Ashton
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Re: A family heirloom
David Ashton   7/5/2013 8:36:37 PM
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I NEED ONE OF THOSE!!!

Max The Magnificent
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Re: Rememberance of Things Past
Max The Magnificent   7/5/2013 6:49:01 PM
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@Michael: I can't even remember whom I knew with the KSR-33...

Growing old is a real pain, isn't it? :-)

Michael Dunn
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Re: Rememberance of Things Past
Michael Dunn   7/5/2013 6:34:02 PM
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You're bringing back memories of a tape punching experience. I can't even remember whom I knew with the KSR-33, but I needed to punch tapes to get some bipolar ROMs burned! Hard to believe that that was the only method they accepted!!

Anyway, IIRC, I threw together a current loop interface to my Poly 88, and away we went. Pretty sure I still have the tapes, as well as tapes for some early microcomputer programs, like Microchess ferinstance :-)

Max The Magnificent
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Re: Rememberance of Things Past
Max The Magnificent   7/5/2013 6:27:36 PM
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@Michael: Couldn't afford a paper tape reader, eh...?

The sad thing is that I'm sure there were occasions when I could have picked up an old paper tape reader ... but I didn;t because I fuguresd "they's be around for ever" :-)

 

My dream is to pick up an old teletype terminal with fan-fold computer paper and both a punched card reader/eriter and a papertape reader/writer.

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