On Saturday 25 July 2009, Haberler Michael wrote:
>a while ago I described how I added a simple optical encoder wheel to
>my lathe. Meanwhile, I eventually got it to work with G33 threading,
>but it wasnt as straightforward as I would have believed, so I thought
>I'd describe my experience.
>
>My f
a while ago I described how I added a simple optical encoder wheel to
my lathe. Meanwhile, I eventually got it to work with G33 threading,
but it wasnt as straightforward as I would have believed, so I thought
I'd describe my experience.
My first attempt was to use the encoder component as d
On Jun 30, 2009, at 3:26 PM, Haberler Michael wrote:
>
> Am 30.06.2009 um 17:09 schrieb Andy Pugh:
>
>> 2009/6/30 Haberler Michael :
>>
>>> The code rings are printed on plain paper with an inkjet printer,
>>> and
>>> laminated into a plastic pouch
>>
>> Interesting. When I tried a similar appr
2009/6/30 Steve Blackmore :
> Andy - are you sure it's from the VFD?
Yes, pretty much. The initial problem was with the limit switches
nuisance-tripping, and that only happened with the lathe spindle
turning, not with the milling spindle (which is on a DC motor). It
even seems to only really be a
Am 30.06.2009 um 17:09 schrieb Andy Pugh:
> 2009/6/30 Haberler Michael :
>
>> The code rings are printed on plain paper with an inkjet printer, and
>> laminated into a plastic pouch
>
> Interesting. When I tried a similar approach using clear tape I found
> that the reflectivity of the tape in th
On Tue, 30 Jun 2009 16:09:45 +0100, you wrote:
>Is there any sign of interference from your VFD on the sensor pulses?
>I am finding that a bit of a problem.
Andy - are you sure it's from the VFD? I'm getting the some jitter even
with the VFD powered off. Set up a spindle speed meter as per page
2009/6/30 Haberler Michael :
> The code rings are printed on plain paper with an inkjet printer, and
> laminated into a plastic pouch
Interesting. When I tried a similar approach using clear tape I found
that the reflectivity of the tape in the frequency range of the
detectors was so high that th
my lathe was lacking a spindle index sensor and quadrature encoder, so
I built one as follows:
The code rings are printed on plain paper with an inkjet printer, and
laminated into a plastic pouch; then cut with a scissor and glued
to the spindle pulley (with some pressure so as to get a reason
>>> If you make a disk, the number of slots per revolution will be limited
>>> to something like 30kHz/3k RPM = 10
>> Note the common thinko here: 3k RPM is not the same as 3k RPS.
>>
>> 3kRPM = 50 RPS, so if you assume 30 kcounts/sec, you have 3 Hz / 50
>> = 600 counts/rev to play with.
>
>
On Mon, 2008-03-10 at 22:38 -0400, Stephen Wille Padnos wrote:
> Kirk Wallace wrote:
>
> >On Sun, 2008-03-09 at 16:29 -0700, Curtis W. Moore wrote:
> >
> >
> >>If I added pulses can it be done? My encoder is just a homebuilt opto
> >>switch. Cutting out a new wheel with more slots/holes would be
Kirk Wallace wrote:
>On Sun, 2008-03-09 at 16:29 -0700, Curtis W. Moore wrote:
>
>
>>If I added pulses can it be done? My encoder is just a homebuilt opto
>>switch. Cutting out a new wheel with more slots/holes would be trivial.
>>Can EMC thread with just one train of pulses? Ie use just one pin
On Sun, 2008-03-09 at 16:29 -0700, Curtis W. Moore wrote:
> If I added pulses can it be done? My encoder is just a homebuilt opto
> switch. Cutting out a new wheel with more slots/holes would be trivial.
> Can EMC thread with just one train of pulses? Ie use just one pin of
> the parallel port?
Ju
Curtis W. Moore wrote:
> If I added pulses can it be done? My encoder is just a homebuilt opto
> switch. Cutting out a new wheel with more slots/holes would be trivial.
> Can EMC thread with just one train of pulses? Ie use just one pin of
> the parallel port?
Right now it is set up to use a standa
Curtis W. Moore wrote:
> If I added pulses can it be done? My encoder is just a homebuilt opto
> switch. Cutting out a new wheel with more slots/holes would be trivial.
> Can EMC thread with just one train of pulses? Ie use just one pin of
> the parallel port?
>
Nope. There MUST be a one pulse p
If I added pulses can it be done? My encoder is just a homebuilt opto
switch. Cutting out a new wheel with more slots/holes would be trivial.
Can EMC thread with just one train of pulses? Ie use just one pin of
the parallel port?
--- John Kasunich <[EMAIL PROTECTED]> wrote:
> Curtis W. Moore wro
Curtis W. Moore wrote:
> I have been using Turbocnc as a control on my lathe. Turbocnc need just
> one pulse per rev to to lathe threading. Is there a way to do this with EMC2?
>
>
Not a the moment.
Many folks (me among them) believe that you really need quite a few
counts per revolution to ma
I have been using Turbocnc as a control on my lathe. Turbocnc need just
one pulse per rev to to lathe threading. Is there a way to do this with EMC2?
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