On Wed, 3 Sep 2008, Jonathan Hancock wrote:

> Date: Wed, 3 Sep 2008 19:27:43 +0000 (GMT)
> From: Jonathan Hancock <[EMAIL PROTECTED]>
> Reply-To: "Enhanced Machine Controller (EMC)"
>     <emc-users@lists.sourceforge.net>
> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
> Subject: Re: [Emc-users] Puma560
> 
> Hi all - just a quick update on my Puma project.

>As a thought, the output from the original encoders is a sin/cos waveform (to 
>see goto http://www.flickr.com/photos/[EMAIL PROTECTED]/ ). I will try to 
>convert 
>this low level signal into a ttl level square wave using an op-amp. The 
>encoder has a pair of leds and photo sensors in.

You will lose a lot of resolution this way! Im sure those encoders are SIN/COS 
for a reason.


>I am looking at using a pic adc to gain limit and homing signals from the
>pots on the back of the motors. This is looking quite promissing.

Maybe you could use that same pic to interpolate the sin/cos signals...

>I've installed ubuntu and emc2 on my machine and now baffled!
> 
>Jon - am I sorting the correct things out to interface to your cards?
> 
>I'll keep you posted...


Jonathan

Peter Wallace
Mesa Electronics

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(='.'=) This is Bunny. Copy and paste bunny into your
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