Subject:
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Re: Shaft encoder
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 16 Jan 1998 15:50:14 GMT
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Original-From:
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Marie Cahill <MCHU4MC1@FS2.EEspamcake.UMIST.AC.UK>
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Viewed:
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2190 times
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> Date: Mon, 12 Jan 1998 13:19:12 +0100
> From: Thomas Hauri <har@twi.ch>
> Organization: Technikum Winterthur Ingenieurschule
> To: handyboard@media.mit.edu
> Subject: Re: Shaft encoder
> Hi
>
> Stefano Nardone wrote:
>
> > I need some docs on interfacing/reading a quadrature shaft encoder to a
> > 68hc11... someone can give me some hint?
>
>
> You could use spezial interface chips to solve your problem. Hewlett
> Packard has some chips (HCTL2016, HCTL2020) which are easy to use and offer
> a lot of features.
>
> I have used the HCTL2020 with the handyboard. If you want to interface the
> shaft encoder without special chip you need to measure the pulsewidth of
> the signal from the encoder aswell as a direction bit which you can
> generate with a simple and-gate. I have written a couple of programs (asm)
> to measure frequencies and pulsewidth with the Input Counter of the hc11.
> Tell if you need them.
>
> bye
>
> Tom
Hi there,
Would these chips be suitable for interfacing a mouse to the
Handyboard? My robot incorporates a mouse as a castor wheel and I want
to use its shaft encoders as position/velocity sensors (relative) for
the robot, but I don't know where to look for details on how the
signals are generated and transmitted for a mouse. Do you have any
suggestions?
Marie
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Message is in Reply To:
 | | Re: Shaft encoder
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| Hi (...) You could use spezial interface chips to solve your problem. Hewlett Packard has some chips (HCTL2016, HCTL2020) which are easy to use and offer a lot of features. I have used the HCTL2020 with the handyboard. If you want to interface the (...) (27 years ago, 12-Jan-98, to lugnet.robotics.handyboard)
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