On Saturday 27 October 2018 21:46:59 Alan Condit wrote:
> I have a homemade encoder on my lathe spindle. I am feeding the
> encoder outputs into the encoder spindle inputs on the 7I76. The
> reported rpm seems to be fluctuating wildly. I want to look at the
> signals to see if the width of the sig
On Saturday 27 October 2018 19:23:58 Chris Albertson wrote:
> > I'm not allergic to that, other than the learning how to do it time
>
> The little $2 parts can be used with Arduino IDE. I bet you
> already know how to do that.
>
Sorry, I've never knowingly touched an arduino, so I know pretty
I bought a small desktop mill a couple of years ago in a state surplus
auction. I think it turned out to be a much better buy than I expected.
The hardware (see below) seems to be OK except a Dell GX-270 computer
that was apparently used as a controller but will not boot and the
spindle contro
I have a homemade encoder on my lathe spindle. I am feeding the encoder outputs
into the encoder spindle inputs on the 7I76. The reported rpm seems to be
fluctuating wildly. I want to look at the signals to see if the width of the
signals is about the same for the index on time and for channel A
>
>
> I'm not allergic to that, other than the learning how to do it time
>
The little $2 parts can be used with Arduino IDE. I bet you already
know how to do that.
But you do get better use of them using ARM's MBED IDC which is only a
baby step above Arduino.
--
Chris Albertson
Redondo B
On Saturday 27 October 2018 18:52:37 Chris Albertson wrote:
> Some day I'll have to connect my favorite development board to EMC.
> That way every time someone suggests something I can ask "Is it
> already built? Can it step a motor at 100K per second, can it read
> quadrature encoders at the MHz
Some day I'll have to connect my favorite development board to EMC. That
way every time someone suggests something I can ask "Is it already built?
Can it step a motor at 100K per second, can it read quadrature encoders at
the MHz range and get you get it for under $2.50 with shipping included?"
I
On Saturday 27 October 2018 17:30:42 Gregg Eshelman via Emc-users wrote:
> PCIe to SPi 'demo board'.
> https://www.asix.com.tw/products.php?op=pItemdetail&PItemID=256;74;110
>Docs and drivers at the bottom of the page
>
> On Saturday, October 27, 2018, 1:43:43 AM MDT, Gene Heskett
> wrote:
>
PCIe to SPi 'demo board'.
https://www.asix.com.tw/products.php?op=pItemdetail&PItemID=256;74;110Docs and
drivers at the bottom of the page
On Saturday, October 27, 2018, 1:43:43 AM MDT, Gene Heskett
wrote:
The spi port on the pi is faster, but I've not found an spi card for x86
machiner
On Sat, 27 Oct 2018 at 17:27, andy pugh wrote:
> On Sat, 27 Oct 2018 at 15:38, Eric Keller wrote:
>
> > The $20 MPG dials seem a
> > little large for a feed rate override.
>
> There are lots of 2-channel encoder switches in a potentiometer-like
> format.
> Typically 16 clicks per rev.
>
> There
On Sat, 27 Oct 2018 at 15:38, Eric Keller wrote:
> The $20 MPG dials seem a
> little large for a feed rate override.
There are lots of 2-channel encoder switches in a potentiometer-like format.
Typically 16 clicks per rev.
There are BCD coded ones too, but they need more IO pins each (4)
https:
On Saturday 27 October 2018 10:35:07 Eric Keller wrote:
> On Fri, Oct 26, 2018 at 9:43 AM Les Newell
>
> wrote:
> > You can't have a pointer on an encoder because you have no way of
> > knowing where zero is.
> >
> > Can a quad encoder be initialized to a particular value? There would
> > be no
>
On Fri, Oct 26, 2018 at 9:43 AM Les Newell
wrote:
> You can't have a pointer on an encoder because you have no way of
> knowing where zero is.
>
> Can a quad encoder be initialized to a particular value? There would be no
reason to home it in this application if so. The $20 MPG dials seem a
litt
On Friday 26 October 2018 23:26:38 Peter C. Wallace wrote:
> On Fri, 26 Oct 2018, Gene Heskett wrote:
> > Date: Fri, 26 Oct 2018 21:17:29 -0400
> > From: Gene Heskett
> > Reply-To: "Enhanced Machine Controller (EMC)"
> >
> > To: emc-users@lists.sourceforge.net
> > Subject: [Emc-users] 5i25 g
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