Advanced Search

Search Results (Searched for: )

  • webbyguy
  • webbyguy
12 Mar 2025 19:38
Replied by webbyguy on topic Can't eek out that last bit of jitter

Can't eek out that last bit of jitter

Category: General LinuxCNC Questions

Because I couldn't figure out how to disable smt for my fx 8350 cpu with the rtai kernel.  I tried switching to an X6 1090T.  I also disabled the thermal limits in bios.  My max jitter reduces to +/-14.4us (with all points within +/-5us except the ones right at +/-14.4us.  I wish I had taken a picture.)  I then turned the thermal limits back on, and I got about the same result I was getting for the fx 8350.  So, I turned the thermal limits back of again, but it didn't go back to the +/-14.4us max jitter.  It still looked the same as the fx 8350.  I tried resetting and messing with some other settings, and I can't get back to that +/-14.4us or better.  With some systems, is there some random timing at startup that causes different latency results even though there were no settings changes?
  • Lindley
  • Lindley
12 Mar 2025 19:13

Incorporating HAL script recommendation (2.7.14 to 2.9.4 conversion of XZC

Category: General LinuxCNC Questions

Very possible...wrong file attached.  

In the meantime, found several apparent errors in the HAL when comparing to the original version conversion.  Further,  I had to reset the BIOS to defaults for Debian 12 to install and had not reset the serial port address. This should be consistent set of INI, HAL, and error report files.
  • webbyguy
  • webbyguy
12 Mar 2025 18:39
Replied by webbyguy on topic Can't eek out that last bit of jitter

Can't eek out that last bit of jitter

Category: General LinuxCNC Questions

Thanks royka,
Do you happen to know, in the rtai kernel, would I move the processes with priority listed as rt?
  • Hakan
  • Hakan
12 Mar 2025 18:17
Replied by Hakan on topic Ethercat gantry config

Ethercat gantry config

Category: EtherCAT

I don't have all the answers but to get you going here is something.

Afaik a gantry system is setup using trivkins kinematics - that you have - and specify coordinates=XXYZ (if you have two servos in X).
You will get four joints, joint_0 and joint_1 is X, joint_2 is Y, joint_3 is Z.
Consequently, a joint represents a servo.
Set up the system like any gantry system.
Homing - see the linuxcnc homing doc.
Looking at the hal and ini files you seem to be almost there. Just change the trivkins line in the ini file and see if it becomes better.
 
  • Sbvr4
  • Sbvr4
12 Mar 2025 17:39
Replied by Sbvr4 on topic Adding Pre and Post Gcode to Versa Probe

Adding Pre and Post Gcode to Versa Probe

Category: Advanced Configuration

This is for v2.10. My apologies for the ambiguity. 
Thank you
  • Darium
  • Darium
12 Mar 2025 17:37
Replied by Darium on topic Problems with Lichuan Ethercat servo drive

Problems with Lichuan Ethercat servo drive

Category: EtherCAT

Wow your numbers are impressive.
I have been under tuning my machines. The acceleration is around 0.1-0.2G. Since I only mill steel so no need for high speed and I can already feel my machine shake with that acceleration. I think it need jerk limit trajectory planner to unlock its full potential
  • PCW
  • PCW's Avatar
12 Mar 2025 16:50
Replied by PCW on topic OLD Lathe conversion to a CNC

OLD Lathe conversion to a CNC

Category: Turning

Do you still get real time errors on the 6.12 kernel?

(the 6.1x kernels are know to have poor network latency)

Note that the normal latency test is not really helpful here
as it doesn't actually do anything (no memory allocation, no I/O etc etc)
so just tests dispatch latency
 
  • cmorley
  • cmorley
12 Mar 2025 16:36
Replied by cmorley on topic Qtvcp Development Discussions

Qtvcp Development Discussions

Category: Qtvcp

Let me know when you think the Gui is ready for inclusion.
  • prokopcio
  • prokopcio's Avatar
12 Mar 2025 14:50 - 12 Mar 2025 21:47

Laser Head Height Sensor – Looking for a Beta Tester

Category: Plasma & Laser

delivery to our country does not work.


Where are you from ?
  • prokopcio
  • prokopcio's Avatar
12 Mar 2025 14:42 - 12 Mar 2025 21:46

Laser Head Height Sensor – Looking for a Beta Tester

Category: Plasma & Laser

I would be happy to buy your sensor, but delivery to our country does not work. If possible, share basic information about your developments (source code is not needed), this is very interesting and can motivate many to develop their own sensors. From simple ideas, study the BCL-AMP circuit and create on one board together with a fast microcontroller (like on BCS100) and EtherCAT on LAN9252. 
Several people have analyzed BCL-AMP circuits – these are very simple LC generators built from just a few basic components like here:
BCL-AMP  
Someone even posted a example schematic like the one below (not the same device but simply).

I tested it, and it works, but as you correctly pointed out, it requires advanced processing, like in BCS-100 controllers, for example, which is not a small cost. I had to look for other methods, and measuring the charging/discharging time of a capacitance with a very small variable current turned out to be a more effective approach, so I pursued that direction. The output interface is a completely separate matter – I chose a simple 0-10V signal and a variable frequency range of 20 kHz - 70 kHz.

  • esmurf
  • esmurf
12 Mar 2025 14:21
Ethercat gantry config was created by esmurf

Ethercat gantry config

Category: EtherCAT

Hi,
i am trying to setup a gantry config with ethercat servos.
Is there some working sample config somewhere? I am kind of lost...
Attached is my nonworking config.

Some questions:
- In linuxcnc terminology, does a gantry count as one or two joints?
- What is the difference between "gantry" and "gantrykins"? 
- How are the different inputs and ouputs of the two ethercat drives combined into one axis? "gantry" module does this only for pos/fb, but not for status, etc.
- How is homing done?
- How can i detect faults, e.g. one servo nonop, or both servos out of sync; and stop everything?
 
  • Aciera
  • Aciera's Avatar
12 Mar 2025 14:11
Replied by Aciera on topic Self-built 7i95 Seeking for help

Self-built 7i95 Seeking for help

Category: Driver Boards

spam removed
  • stkvit
  • stkvit
12 Mar 2025 13:45

Laser Head Height Sensor – Looking for a Beta Tester

Category: Plasma & Laser

I would be happy to buy your sensor, but delivery to our country does not work. If possible, share basic information about your developments (source code is not needed), this is very interesting and can motivate many to develop their own sensors. From simple ideas, study the BCL-AMP circuit and create on one board together with a fast microcontroller (like on BCS100) and EtherCAT on LAN9252.
  • prokopcio
  • prokopcio's Avatar
12 Mar 2025 13:21 - 12 Mar 2025 13:24

Laser Head Height Sensor – Looking for a Beta Tester

Category: Plasma & Laser

Rod wrote :  Lukasz at Proma is very impatient!  

that's not true Rod ;), I'm an extremely patient person.
The fact that the shipment arrived quickly has nothing to do with it.

However, I must admit that I am very curious about the first attempts with LinuxCNC.
  • Aciera
  • Aciera's Avatar
12 Mar 2025 13:11

Laser Head Height Sensor – Looking for a Beta Tester

Category: Plasma & Laser

@stkvit
Apologies, your original user profile got deleted by accident.
Displaying 8491 - 8505 out of 24529 results.
Time to create page: 0.267 seconds
Powered by Kunena Forum