Hello Andrew,
I'm finishing some parts of the enclosure for the PC on the retrofitting
we're doing to our lathe. I'm planning to do the same thing you want to do.
Using step mode and being able to home with index. I recall reading on the
forum a post from Andy telling that it's more than possible
Awesome Todd
What Mesa card did you use? And do you mind if I pick your brains on this
rather than reinventing the wheel. I would love to see a config that
works so I can compare it with what I have and make the needed changes.
Also did you find the motion was uneven or did it just work as exp
A laser printer is a good example of how people really want a CNC mill to
work. You design you document on the computer then press "print" and the
printer creates it. After the last of the data is moved to the printer
you can turn the PC off it you like.
Why it's not that simple:
https://ww
It works very much similar to running them with an analog input. The encoder
feedback can also be handy for double checking the tuning of your servo drives.
You simply disconnect the position feedback from the stepgen and use the
feedback from the encoders to connect to the PID and the joint po
Actually all I want to do is be able to home to index. Which I might be
able to do now. As my servo can output a encoder Z pulse.
And I want to have linuxcnc remember where it is if I disable the servos.
That is now a massive deal but I get a bit sick of continously homing the
machine every time
On Mon, 10 Feb 2020 at 16:07, dave engvall wrote:
>
> I need suggestions for a 4 channel analog system; encoders and +- 10 v
> for servos; no i/o as I handle everything else external to linuxcnc.
> Ideally the system will use the spi so as to leave the ethernet
> available for downloading updates
I suppose it's not all that creative, but Mesa sells a rPi motherboard
which takes smart serial and 25 pin daughter cards. It seems like an
attractive option.
On Mon, Feb 10, 2020 at 11:07 AM dave engvall wrote:
> Hi all,
>
> I've been following Gene's adventures with the Rpi4B. Gene uses steppe
Hi all,
I've been following Gene's adventures with the Rpi4B. Gene uses steppers
and I use servos so I can't just clone his setup.
I need suggestions for a 4 channel analog system; encoders and +- 10 v
for servos; no i/o as I handle everything else external to linuxcnc.
Ideally the system wi
On Mon, 10 Feb 2020 at 10:30, andrew beck wrote:
> On the back burner though I want to
"close the loop" back into linuxcnc with a 7i84 mesa card I think. Has
anyone done that before with a step direction control system?
What do you anticipate gaining from bringing the encoders back to LinuxCNC?
Hey guys
I recently got this machine working a couple of days ago here is the link
to the youtube video. So happy to have it moving lol! still need to sort
a bunch of stuff but at least it moves now.
https://youtu.be/N1MoP18SjMU
I am now just connecting up a bunch more inputs and outputs bef
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