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Merci , pour cette réponse rapide
, a l origine je branche des cartes chinoises mach3 , j ai testé en direct sur le port parallèle,
mais si je veux tester la pin 1 , faut il que j utilise une résistance par sécurité, pour ne pas griller la carte PCIe ? Quelle serait la valeur éventuellement de cette résistance ?

Merci
Florent

I will keep that web site in mind Hakan. Thank You.

David-Diy - possible to put here some photos/videos showing your brake?

Hey, gut erkannt.
Zunächst erst einmal vielen dank für die mühe.
Ich habe die vorlage hier aus dem thread genommenen, welche nur eine Achse hatte (von Andrax).

Zu 1: ich hab es ausprobiert und das Handrad wird auch sauber erkannt aber wenn ich dran drehe bewegt sich nix. Gemini sagt ich solle die Pins von axis auf joint bewegungen ändern, aber so funktioniert dann garnix mehr.

Zu 2: das stimmt, mein fehler hab es auf -2 geändert nun geht das homing einmal, aber auch nur exakt einmal und linux cnc sieht anscheinen dannach die achsen auch immernoch nicht als genullt an.
Werde heute abend mich nochmal ran setzten, wäre dir aber echt dankbar wenn du mir weiter helfen könntest.

Falls du discord hast add mich gerne mal
@jugo2

LG justus

Anyone using Sheetcam v8?

They show the new Auto Nest options, which looked very neat so I bought a license.
However, the auto nest doesn't start for me. I get a white window for three seconds
and the a message saying failed to start auto nest application.

I have sent a support request to sheetcam, no reply.
Then I read some very worrying messages on their forum that the company is sold and
the knowledgeable guy left.

Any tips for getting the auto nest to start?
 

I don't do consulting but I'll help you get going with the EtherCAT servos,
like I have helped many others here on the forum.

With some luck this is all you need, at least it is a good starting point.
github.com/dbraun1981/hal-cia402/tree/main/example

From what it looks like, the only way out from homing is that is finishes.
This could probably be expanded to include error states and whatever can occur.

 

That's actually not often the problem. It isn't a very big problem.
For rigid tapping, threading and other synchronized moves repeatability is the key
Always the same starting position, follow the previous tool path
and that is the case even with a slight delay in the position from an axis.
To put in perspective, say a feed of 600 mm/min, gives a following error of 20 micrometer from 2 1 ms servo cycles delay.
Homing with switches should also be okay as long as homing is always done the same.
And, there is usually a slow feed state at say 30 mm/min => 1 micrometer off due to feedback delay.
Repeatability comes down to switch repeatability.
Homing on index is not affected.

The only real situation I can think of right now is with probing.
But again, probing speed of say 30 mm/min gives 1 micrometer off due to feedback delay.

The only problem is when you want to synchronize with external movements (like tapping).

You don’t have a real following error! LCNC is only behind if it measures the following error! It compares an old position which comes time delayed due to the Ethercat cycle! 

I modified the DeAsda Hal driver so that I can read out the real following error of my DELTA Servo driver. At 20m/min, the error is less than 20micron (LCNC is showing something around 1.8mm) At normal speeds e.g. 6m/min, the following error is below 1micron (my servos do have 24-bit encoders)

That means, you can simply forget the LCNC following error….just make it large so that it does not stop your system! Use instead the following error limits in your drive or use the drive following error in LCNC to make your own Stop or Warning routine in LCNC, but don’t forget….the servos must be absolutely perfect tuned in the drive and do not use any p I d parameters in LCNC for that drive!!!

 

When I have time I will write up a "5aBOB for Dummies". My big router will use a 7c81 x 5aBOB.

For what it's worth, searching aliexpress for panel21190e finds some similar items.
I notice one of the pictures shown at  www.aliexpress.us/item/3256808758453292.html  appears identical to Soccer Kid's panel.

Can you kindly share more info about this ethercat panel?
Where did you get it and model? And a few more photos?

royka wrote:

Sorry for the late reply, that image should also work for de OPI5 plus if you only edit in "armbianEnv.txt" the line:
fdtfile=rockchip/rk3588s-orangepi-5.dtb
to:
fdtfile=rockchip/rk3588-orangepi-5-plus.dtb

How can I do this? It is won't startup. I must write iut to SD card and change this parameter and than with dd transfer all to emmc?

Huge thanks to everyone for the great discussion. It's crystal clear now. We're sort of running a open loop like system with LCNC and letting the drives handle the motion.

But the added benefit getting a real world following error is great to monitor and possibly to adjust the feed to keep everything tight. Which reminds me of Fanuc AICC.

Professional controllers like Fanuc, Mitsubishi etc. are using fiber optic communication to the drive and has some sort of tracking error control options such as AICC II or smoothing options, I'm guessing they're doing the same thing?