On 6/13/21 7:38 PM, Gerrit Visser wrote:
Others will have more experience, mine is relatively recent.
The 7i92 in my setup interfaces to the BOB (PMDX132 in my case). It is driving
4 axes on a shop made gantry-type mill. The actual stepper drivers on the
PMDX132 are Gecko 201's, nothing stellar but it was almost free, and it works 😊
If you pick the right 7i92 version it has a DB25 as one of the 2 connectors.
The Mesa board would directly connect to your PC using an ethernet cable.
That's an option I'd like. Cat5/6 is a lot easier to get, and
ethernetcards are easy to find. (It's harder to keep finding the rightÂ
LPT PCI cards).
So each machine, the mill and the lathe, both would need their own
7i92, or whatever model, right?
Ron
Gerrit
-----Original Message-----
From: R C <[email protected]>
Sent: June 13, 2021 9:13 PM
To: [email protected]
Subject: Re: [Emc-users] all the MESA cards talk made me think
I just looked up what a PMDX132 is, part of my problem is that the parallel
PCI card I used appears to be broken, and of course they are harder to get. So
I wouldn't mind switching to an ethernet based controller in the PC side (Dell
T5500/T7500).
I have seen the 7i92 mentioned, and others, can they do multiple stepper
motors? (right now I am using a parallel BOB, that connects to steopper
drivers (ala DM542), which drive the actual steppers.)
thanks,
Ron
On 6/13/21 7:03 PM, Gerrit Visser wrote:
I choose a 7i92 to connect my PC with a PMDX132 to run PathPilot (which has
LinuxCNC inside). Depending on your BOB it might be plug-play with pre-build
.bit files to configure the Mesa card.
My reason for going with ethernet version was to reduce electrical grounding
issues. Had too many of those in the past with direct connected stuff. It also
expands the choice of PC to run LinuxCNC on, doesn't need a pci or pcie slot
this way.
Gerrit
-----Original Message-----
From: R C <[email protected]>
Sent: June 13, 2021 8:43 PM
To: linuxcnc-users-list <[email protected]>
Subject: [Emc-users] all the MESA cards talk made me think
Hello,
I have a 'desktop' mill and lathe (both Sherline), and I am using a parallel
BOB and printer ports to run them. Of course one of them just gave up (PCI
printer card), I do have a spare but they are harder to come by, besides, the
setup is not really ideal?
What would be the best way to replace the BOB-LPT stuff? (these things are
desktop CNC machines, I am playing/learning for fun, I am not trying to
reliably machine F22 raptor jet engine parts, I am mostly turning stock into
scrap).
I see some cards that are in the $50 etc range, and there are the
ones that use ether/cat5 connections (are 'regular' ethernet cards
used with
those?)
I am looking at a lathe that has 2 steppers, and it has a quadrature encoder,
the mill has 3 steppers, and planning on adding a quadrature encoder).
thanks,
Ron
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