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[TenTec] Optical Encoder operation

To: <tentec@contesting.com>
Subject: [TenTec] Optical Encoder operation
From: rich@1967z28.com (Rich McCabe)
Date: Tue, 13 Aug 2002 16:01:28 -0500
Mark try this..

http://www.cse.rmit.edu.au/design/mentoring/shaft_enc/lesson2.html



----- Original Message ----- 
From: "David McClafferty" <ve1adh@yahoo.ca>
To: "Mark Erbaugh" <mark@microenh.com>
Cc: "Tentec Reflector" <tentec@contesting.com>
Sent: Tuesday, August 13, 2002 3:56 PM
Subject: Re: [TenTec] Optical Encoder operation


> Hi Mark, There are two sensors looking at the slots in
> the disc. The software looks at both and determines
> the direction by which one it sees first.
> 
> 73, Dave, VE1ADH
> 
> --- Mark Erbaugh <mark@microenh.com> wrote:
> > I believe I understand the basic operation of an
> > optical encoder, such as the 302. As you turn the
> > knob, a series of holes on a plate connected to the
> > shaft generate a series of pulses which the Pegasus
> > software counts and convert into a value indicating
> > movement.  My question is how does the Pegasus
> > determine which way (CW or CCW) the knob is being
> > turned?
> > 
> > Mark
> > 
> > 
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