is it possible to use linuxcnc only as DRO?

I am trying to use linuxcnc for a manual machine to handle only as a coordinate display.
Connect rotary encoders in the screw and make the physical connection where I already connected with linuxcnc with the hal encoder component.
The issue that I cannot find the input signal to the axes to visualize them

The best I can do is connect it like this: but it gives me a tracking error

net xpos-fb encoder.0.position    => joint.0.motor-pos-fb

Where should I connect the encoder signal so that it only displays?

 

Maybe helpful?

linuxcnc.org/docs/devel/html/gui/mdro.html

 

Awesome solution Thank you very much!!!!!

It is not working for me, it cannot run on 2.8.4

is only for 2.10!!!!!!!!!!!  where and how do i download linuxcnc 2.10?

can't execute DISPLAY program mdro !!!!!!

what am I doing wrong?



[EMC]
MACHINE = MDRO
DEBUG = 0
VERSION = 1.1

[DISPLAY]
DISPLAY = mdro
GEOMETRY = XZ
POINT_SIZE = 20
MM = 1

 

I believe it works with 2.9 as well as 2.10 (master); at least the 2.9 user manual has the MDRO pages in it.

Rodw has posted a link to an ISO file which should make things easy to install 2.9.  Check the first two threads here:

forum.linuxcnc.org/9-installing-linuxcnc

Yes but as a simple nice DRO solution I woul suggest TouchDRO affordable easy and niiiiiice! I'm i Europe Sweden so I use a ESP32.
My take: www.stockholmviews.com/wp/touchdro-diy-esp32-interface/

I second that.

I've had a TouchDRO installed on my manual lathe for >10 years.  Same ancient arduino, powered on continuously, and a $20 used tablet.  Works extremely well.

I have managed to install with the debian 12 iso with linuxcnc 2.9 pre
I have updated as much as the system allows me.
the result is still the same as with linuxcnc 2.8.4 debian 10
it can not be executed.
Can someone confirm if it works with 2.9 to know if I'm doing something wrong?

thank you so much

Just tried it:

On 2.9 Bookworm package install -> cannot get it to run

On a 2.10 RIP install -> seems to work fine.


So I'm not sure if it is the install mode or the version. I lean towards the install method since the source code for 2.9 branch seems to include the 'mdro' files.


[edit]
I'm not really familiar with package installations (I cant' find where it installs stuff) as I usually work on RIP installations.

thanks!!!

sorry, what is a RIP installation?

I do not know the term RIP

RIP = Run In Place
It is a way of running LinuxCNC in its own environment, not as a normal installation.
Very useful for development and/or editing as it can be compiled and run very fast to test the changes.
And you can have a normal install and a RIP on the same PC, as they are separate entities.