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  • cutnweld
  • cutnweld
26 Jul 2024 15:19
X and Y switched was created by cutnweld

X and Y switched

Category: Plasmac

Good morning, this morning I was cutting some nested and rotated parts done in conversational. I stopped the cut to move my work Y zero, and now the X and Y are switched in the G54WCS. Any ideas how I can switch it back?
  • Cant do this anymore bye all
  • Cant do this anymore bye all's Avatar
26 Jul 2024 15:16
Replied by Cant do this anymore bye all on topic LinuxCNC machine setup with Rasperry Pi4 and Mesa 7i76 for communication

LinuxCNC machine setup with Rasperry Pi4 and Mesa 7i76 for communication

Category: General LinuxCNC Questions

Read this page
linuxcnc.org/docs/2.9/html/man/man9/hm2_eth.9.html

Be mindful that your interface should be eth0 rather than eth1. Be sure to read the manual for your Mesa card with regards to setting the address of the card.
  • Aciera
  • Aciera's Avatar
26 Jul 2024 15:14
Replied by Aciera on topic Trajectory Planner using Ruckig Lib

Trajectory Planner using Ruckig Lib

Category: General LinuxCNC Questions

unless the minimum radius setting would not allow for the transition to move from the previous line plane to the new line target plane maybe?


Yes, it's likely that the vertical move from the G0 traverse to the G1 contour depth is too short to create a fillet that satisfies the limit of curvature so it basically decides to take the longer route. Not sure how easy it is to detect such cases in the algorithm but it is going to be absolutely crucial to get this rock solid.
  • elovalvo
  • elovalvo
26 Jul 2024 15:13
Replied by elovalvo on topic LinuxCNC on Raspberry Pi 5

LinuxCNC on Raspberry Pi 5

Category: Installing LinuxCNC

if you are using the image from this link

forum.linuxcnc.org/9-installing-linuxcnc...pi-5?start=40#303752

maybe they should already be installed.

I've never used Ethercat so I've never had this problem.

However you can see at this link
linuxconfig.org/how-to-install-linux-ker...ders-on-raspberry-pi
  • jmelson
  • jmelson
26 Jul 2024 15:06
Replied by jmelson on topic Yaskawa incremental encoder and Mesa 7i48

Yaskawa incremental encoder and Mesa 7i48

Category: Driver Boards

Yes, low speed cogging is almost certainly an issue with a 6-step drive, that's why the high-end drives use sinusoidal or at least trapezoidal schemes. The 6-step drives abruptly cut off current on one winding and jump to the next winding, and that causes a disruption in current as the commutation takes place. Motor inductance prevents the current from resuming right away. That click-click-click sounds to me like a 6-step drive. Most of the time, when coupled to a machine axis, these clicks have very little effect on position.
Jon
  • sin-do-re
  • sin-do-re
26 Jul 2024 15:01
Replied by sin-do-re on topic Inserting an Output-ON M-Code in QtPlasmac g-code

Inserting an Output-ON M-Code in QtPlasmac g-code

Category: General LinuxCNC Questions

Thank you Rod.

Assuming I use M64 P3 and M65 P3,

How is the “3” linked to HMOT CARD ssr output 3, in the HAL file?
I assume there should be some reference to the output number 3 in the Hal file otherwise it won’t work.
  • Lcvette
  • Lcvette's Avatar
26 Jul 2024 14:46
Replied by Lcvette on topic Trajectory Planner using Ruckig Lib

Trajectory Planner using Ruckig Lib

Category: General LinuxCNC Questions

Looks like there is a bit of a problem there:

 

I don't quite understand why the fillets go above the G0 and below the G1 moves.

unless the minimum radius setting would not allow for the transition to move from the previous line plane to the new line target plane maybe?
  • Lcvette
  • Lcvette's Avatar
26 Jul 2024 14:41
Replied by Lcvette on topic Trajectory Planner using Ruckig Lib

Trajectory Planner using Ruckig Lib

Category: General LinuxCNC Questions

Looks like there is a bit of a problem there:

 

I don't quite understand why the fillets go above the G0 and below the G1 moves.

are the two drawn squares of the same code with different trajectory plan methods applied?  if so, then I am wrestling with two thought trains.

The first is me thinking that the Z start/end threashholds should NOT be violated as i could see that being problematic and arbitrarily gouging into parts when repositioning and increasing the cut loads beyond he commanded settings.

The second is that it is really not any different than the way i currently plan the tool paths when roughing and setting smoothing tolerance and stock to leave in the XY cut plane.  That said, i do notice that in cam the z heights do not violate the set bottom height of the selected geometry regardless of the smoothing and or tolerance settings.  if linuxcnc currently does  have not seen evidence of it.  of course i typically set the smoothing values in LCNC fairly low, typically not more than 1-3 thousandths so would be difficult to see that when using a stock to leave with enough cushion for it not to show up on the finished part after finish passes are complete.

interesting situation, i am curious to hear more on it from Grotius.

As always, Thank you for the awesome work and effort on this amazing project!

Chris
 
  • Aciera
  • Aciera's Avatar
26 Jul 2024 14:08
Replied by Aciera on topic Trajectory Planner using Ruckig Lib

Trajectory Planner using Ruckig Lib

Category: General LinuxCNC Questions

Looks like there is a bit of a problem there:

 

I don't quite understand why the fillets go above the G0 and below the G1 moves.
  • Aciera
  • Aciera's Avatar
26 Jul 2024 14:01 - 26 Jul 2024 14:02
Replied by Aciera on topic Taig Lathe conversion to LinuxCNC: M3 is not turning on spindle

Taig Lathe conversion to LinuxCNC: M3 is not turning on spindle

Category: StepConf Wizard

As for 'M7' add this to your hal:
net m7-command <= halui.mist.is-on => parport.0.pin-<your_pin_number_here>-out
  • Grotius
  • Grotius's Avatar
26 Jul 2024 14:00
Replied by Grotius on topic Trajectory Planner using Ruckig Lib

Trajectory Planner using Ruckig Lib

Category: General LinuxCNC Questions

Hi,

For every gcode segment, we calculated the velmax "vm" for the segment given the curvature extrema of
that segment. The curvature extrema is retrieved by c++ functions that iterate over a spline, clothoid curvature.
For arc & line, the curvature is constant and easyer to retrieve.

If you look at the results, i think they aren't shocking or out of scope. My first impression is ok for the vm values.

Warning: Spoiler!


 

From here we can do the look ahead function.




 
  • Aciera
  • Aciera's Avatar
26 Jul 2024 13:55
Replied by Aciera on topic Taig Lathe conversion to LinuxCNC: M3 is not turning on spindle

Taig Lathe conversion to LinuxCNC: M3 is not turning on spindle

Category: StepConf Wizard

Your 'spindle-on' signal is not connected to anything:
net spindle-on      => parport.0.pin-16-out

Try:
net spindle-on     <=  spindle.0.on  => parport.0.pin-16-out
  • mariusl
  • mariusl's Avatar
26 Jul 2024 13:37
Replied by mariusl on topic Jog keys for A axis

Jog keys for A axis

Category: Gmoccapy

Thanks for that info. I have been doing that for years now. It makes it impossible to upgrade or update a machine if you modified the source. I suppose I will just have to do it again.
  • Cerezas
  • Cerezas
26 Jul 2024 13:33
Taig Lathe conversion to LinuxCNC: M3 is not turning on spindle was created by Cerezas

Taig Lathe conversion to LinuxCNC: M3 is not turning on spindle

Category: StepConf Wizard

I am moving away from Mach3 (yay!) and created a StepConfig from the Mach3 XML file. I had to tweak some settings, but in the end the X and Z axis are moving properly. On the pin configuration I had to add the ESTOP OUT pin, which is working now. However, M3 is not turning on the spindle. With a scope and while using Mach3 I figured out that the spindle turns on when pin 16 goes HIGH. The spindle doesn't use PWM, it's just single speed. So, in the parallel port pin setup I tried Spindle ON, Spindle CW and Spindle CCW for  pin 16, but nothing happens when I issue M3 on the MDI or when I run a simple GCode program. On the scope, I don't  see the pin change logic level when I issue an M3 command. I also tried to set Mist Coolant on the pin but M7 doesn't do anything either.

The parallel port is set in OUT mode. As far as I understand, that makes pin 16 an output from the PC to the lathe. I have 3 parallel ports on the PC and I tried them all with the same result, thinking that maybe pin 16 was unresponsive on the first port.

I'm on LinuxCNC 2.9 and I am attaching my HAL file if that helps. 

File Attachment:

File Name: taig_lathe.hal
File Size:2 KB


Any suggestions?

Thanks

 
  • Aciera
  • Aciera's Avatar
26 Jul 2024 13:22
Replied by Aciera on topic Jog keys for A axis

Jog keys for A axis

Category: Gmoccapy

This should give you A-axis jogging with 'Home'/'End' keys

 
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