On 03/01/2015 11:53 AM, Martin Dobbins wrote:
Jon,
Thanks, I'm a little concerned about the count. Back of an envelope
calculations suggest that by the time I put a countershaft on the Sherline
lathe to get useful torque at a low speed it will top out at ~1700 rpm
Oh, yes, if you are
On 03/01/2015 11:53 AM, Martin Dobbins wrote:
That was my first thought and a much less expensive method, but I concluded I
might need an oscilloscope to get A and B pulses set up correctly and then I
might have to think about what to do about debounce and decided an off the
shelf
If you are interfacing the encoder directly through the
parallel port, then
Halscope could be used to check the A-B quadrature alignment.
No bulky test gear needed.
Jon
Jon,
Thank you, all I have to do is learn how to use Halscope rather than buy an
oscilloscope just for this.
Picked up a JET 9x20 for only $50 last night. When did JET paint their
stuff grey? I've only seen them green or off-white.
Should make a decent base for CNC conversion, many 9x20's have been
done. Should be able to make it at least as good as an ORAC since those
are built on a Compact 8 clone
That physical example I showed is actually just an A plus index, it
was original fitment on my Starturn cnc lathe that I upgraded to
linuxcnc, even the optos are original.
Screw on chucks too
Dave
On 01/03/2015, Martin Dobbins tu...@hotmail.com wrote:
If you are interfacing the encoder
Would this be any use as a headstock spindle encoder?
https://www.sparkfun.com/products/11102
Martin
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Dive into the World of Parallel Programming The Go Parallel Website, sponsored
On 1 March 2015 at 17:16, Martin Dobbins tu...@hotmail.com wrote:
Would this be any use as a headstock spindle encoder?
It could be used, and it has an index (without which there isn't much point).
But that isn't a particularly spectacular price, and the coupling is
likely to not be useful. You
On 03/01/2015 10:16 AM, Martin Dobbins wrote:
Would this be any use as a headstock spindle encoder?
https://www.sparkfun.com/products/11102
Yup, looks fine. I made sure it has the index pulse.
Jon
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Dive into the
If using a parallel port I would say that has a rather high count,
This sort can he home brewed (48 slot) :-
http://www.collection.archivist.info/archive/DJCPD/PD/2013/2013_08_04_starturn_encoder/IMG_1631.JPG
and still give the through hole
Dave Caroline
On 01/03/2015, andy pugh
Jon,
Thanks, I'm a little concerned about the count. Back of an envelope
calculations suggest that by the time I put a countershaft on the Sherline
lathe to get useful torque at a low speed it will top out at ~1700 rpm
Andy,
I'm planning to copy this person:
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