On Thu, Nov 29, 2018 at 5:25 PM Andy Pugh wrote:
>
>
> > On 29 Nov 2018, at 20:40, Chris Albertson
> wrote:
> >
> > "Hal" is not code? It is a text file that contains instructons.
>
> It’s a net list. It might look like code but it helps to keep the
> distinction in mind. It is interpreted
hanced Machine Controller (EMC)" >
> > Subject: Re: [Emc-users] Spindle Encoder AEDR-8300 Encoder Ring
> >
> > The effective pulse width is always zero if you look at the leading edge.
> > Pulse length does not matter.
> >
> > If you care about being th
On Thursday 29 November 2018 13:59:51 Chris Albertson wrote:
> I bought a few inductive sensors on eBay. These are surprisingly
> repeatable and very precise. They are cheap and easy to use. THe come
> in different diameters. The one I like best has M12x1 threads on the
> body.
>
> Here is an
On Thu, 29 Nov 2018, Chris Albertson wrote:
Date: Thu, 29 Nov 2018 11:47:23 -0800
From: Chris Albertson
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] Spindle Encoder AEDR-8300 Encoder Ring
The e
ate: Thu, 29 Nov 2018 12:13:25 -0500
> > From: David Berndt
> > Reply-To: "Enhanced Machine Controller (EMC)"
> >
> > To: emc-users@lists.sourceforge.net, Peter Blodow
> > Subject: Re: [Emc-users] Spindle Encoder AEDR-8300 Encoder Ring
> >
>
On Thu, 29 Nov 2018, David Berndt wrote:
Date: Thu, 29 Nov 2018 12:13:25 -0500
From: David Berndt
Reply-To: "Enhanced Machine Controller (EMC)"
To: emc-users@lists.sourceforge.net, Peter Blodow
Subject: Re: [Emc-users] Spindle Encoder AEDR-8300 Encoder Ring
Ok, thanks guy
I bought a few inductive sensors on eBay. These are surprisingly
repeatable and very precise. They are cheap and easy to use. THe come in
different diameters. The one I like best has M12x1 threads on the body.
Here is an example:
On Thu, 29 Nov 2018 at 17:16, David Berndt wrote:
Ok, thanks guys. I'll go with a seperate encoder to pickup a once per
> rotation count. Are there any requirements about on/off span in relation
> to A/B.
>
No, any once-per-rev pulse will do.
As has been mentioned, unless you want to do
Ok, thanks guys. I'll go with a seperate encoder to pickup a once per
rotation count. Are there any requirements about on/off span in relation
to A/B. The "centering" of the index pulse sounds like it could be a bit
fiddly, and getting the pulse perfect would probably be difficult as well,
On 11/28/2018 11:52 PM, David Berndt wrote:
Alright, Dragging this back up.
A knockoff Omron encoder showed up in the mail, well I
assume It's a knockoff at this price. Mounted it, wired it
up. But it's on the back of the mill and geared 68/55 to
the actual spindle output.
This sounds like
On Thu, 29 Nov 2018 at 05:55, David Berndt wrote:
>
> So now the question is, what do I setup scaling to?
Yes, scale for exactly one revolution of the actual spindle and arrange a
real once-per-rev pulse for a separate index.
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and
Hello David,
how did this funny gear ratio come to be? Assuming it's tooth gears or a
belt drive, can't you change it to 55/55 or 68/68 or some other 1/1
ratio, which would solve this problem? Years ago, I made drawers full of
gears for cases like this, letting my little mill make gears for
Alright, Dragging this back up.
A knockoff Omron encoder showed up in the mail, well I assume It's a
knockoff at this price. Mounted it, wired it up. But it's on the back of
the mill and geared 68/55 to the actual spindle output.
So now the question is, what do I setup scaling to? Set
I actually tried this technique previously using the ats675s but I
couldn't get a satisfactory quadrature output, my gear teeth produced more
like a 25-30% on time and 70% off, so clocking the two sensors for real
quadrature was problematic and didn't really provide the result I was
On 11/01/2018 03:09 AM, Chris Albertson wrote:
You don't want to block the hole in the spindle so you are looking for an
encoder with a large hole though it?Is that right?
If the spindle is belt or gear driven you could place the sensor on the
gear or pulley that drives the spindle. You
On Thu, 1 Nov 2018 14:34:38 +
andy pugh wrote:
> On Thu, 1 Nov 2018 at 08:11, Chris Albertson
> wrote:
> >
> > You don't want to block the hole in the spindle so you are looking for an
> > encoder with a large hole though it?Is that right?
>
> Something which I think ought to work is
On Thu, 1 Nov 2018 at 08:11, Chris Albertson wrote:
>
> You don't want to block the hole in the spindle so you are looking for an
> encoder with a large hole though it?Is that right?
Something which I think ought to work is a crank position sensor set.
The rotors look like this, with a
On Thursday 01 November 2018 04:09:36 Chris Albertson wrote:
> You don't want to block the hole in the spindle so you are looking for
> an encoder with a large hole though it?Is that right?
>
> If the spindle is belt or gear driven you could place the sensor on
> the gear or pulley that
On Thu, 1 Nov 2018 at 03:31, David Berndt wrote:
> That doesn't sound particularly hopeful for me and my plans. I guess maybe
> a more traditional/proven approach of a through-beam sensor with
> interrupting disk and much much lower resolution encoder ring with
> drilled/milled holes might be
You don't want to block the hole in the spindle so you are looking for an
encoder with a large hole though it?Is that right?
If the spindle is belt or gear driven you could place the sensor on the
gear or pulley that drives the spindle. You could also place a timing
belt puley on the
Thanks Andy,
That doesn't sound particularly hopeful for me and my plans. I guess maybe
a more traditional/proven approach of a through-beam sensor with
interrupting disk and much much lower resolution encoder ring with
drilled/milled holes might be the way to go.
But to make sure this
On Wed, 31 Oct 2018 at 19:00, David Berndt wrote:
> if so was it with one of the one channel output units
> instead of 2 channels or how did you handle creating such a fine pattern?
> Any other details about how it was done and how well or not well it works
I used a 2 channel. I ended up having
Hi EMC folks and more specifically Andy Pugh,
I was hoping you could let me know which of the AEDR line you used and how
fine a pattern you put on your encoder wheel on one of your lathes. It
seems the reasonable options are the 36 LPI or 75LPI models, but I suspect
you did less? if so was
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