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  • Boogie
  • Boogie
11 Feb 2025 18:09
Replied by Boogie on topic Converting a THCAD-300 to a THCAD-10?

Converting a THCAD-300 to a THCAD-10?

Category: Plasma & Laser

THCAD-2 two pieces just ordered. Regarding CPC port: are we talking about Hypertherm Part Number ‎428653?
  • Aciera
  • Aciera's Avatar
11 Feb 2025 17:57 - 11 Feb 2025 17:58
Replied by Aciera on topic scurve trajectory planner

scurve trajectory planner

Category: General LinuxCNC Questions

However Equatation 40, i dont understand the first greek character, and the name of this character.

The greek letter is 'kappa' and stands for curvature
  • meister
  • meister
11 Feb 2025 17:57

Anyone figured out how to get Trinamic's TMC5160 drivers working with LinuxCNC?

Category: Driver Boards

someone has probably done it:


I have now also ordered some to try to integrate them into RIO
  • PCW
  • PCW's Avatar
11 Feb 2025 17:53

try to invert the enable on my mesa 7i96s

Category: General LinuxCNC Questions

inverting the SSR output will work _BUT_ it will not have the desired effect
because after a LinuxCNC fault or before LinuxCNC is running, the drives will
be enabled.

If you cannot invert the _DISABLE_ function on your drive, its best to logically
invert the signal externally, one way would be:

+5V --> 47 Ohm 1W --> All drive _DISABLE_+ inputs
GND --> All drive _DISABLE_ - inputs

7I96S OUT0+ --> All drive _DISABLE_+ inputs
7I96S OUT0-   --> GND

 
  • beauxnez
  • beauxnez
11 Feb 2025 17:53 - 11 Feb 2025 18:43

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

 if I enter this instead I have no error but qtplasmac does not start

 
[code]loadrt [EMCMOT]EMCMOT servo_period_nsec=[EMCMOT]SERVO_PERIOD num_joints=[KINS]JOINTS num_spindles=[TRAJ]SPINDLES
[/code]

 
  • beauxnez
  • beauxnez
11 Feb 2025 17:51 - 11 Feb 2025 17:52

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

still an error

Debug file information:
Note: Using POSIX realtime
MOTION: num_joints is 33, must be between 1 and 16
motmod: rtapi_app_main: Operation not permitted (-1)
./NVEM.hal:5: waitpid failed /usr/bin/rtapi_app motmod
./NVEM.hal:5: /usr/bin/rtapi_app exited without becoming ready
./NVEM.hal:5: insmod for motmod failed, returned -1
10762
Stopping realtime threads
Unloading hal components
Note: Using POSIX realtime


 
  • PCW
  • PCW's Avatar
11 Feb 2025 17:40
Replied by PCW on topic Mesa with Ethercad connection

Mesa with Ethercad connection

Category: Driver Boards

I've been considering this basically hostmot2/lbp16 over EtherCAT so the driver is pretty much the same
(just using Ethercat for transport)
 
  • PCW
  • PCW's Avatar
11 Feb 2025 17:38
Replied by PCW on topic PWM with a 7i96 and 7i85

PWM with a 7i96 and 7i85

Category: General LinuxCNC Questions

Is there some reason you are not using the built in analog out on the 7I96S for the VFD?
 
  • Grotius
  • Grotius's Avatar
11 Feb 2025 17:17 - 11 Feb 2025 17:22
Replied by Grotius on topic scurve trajectory planner

scurve trajectory planner

Category: General LinuxCNC Questions

@Fabian,

Thank you for nice illustration. This indeed will not work.
Good you have seen the Frego paper is not suitable for our work!

For the new paper, i managed to code Equatation 39.  

File Attachment:

File Name: main.c
File Size:4 KB

However Equatation 40, i dont understand the first greek character, and the name of this character.

@Automata,

Currently there is no filleting algo active in the source.
Latest update was to test scurve by Julian.
Also G93,94,95 work now.

Next to do is add filletizing algo. Should be nice if we can directly add a 3d clothoid.
  • jtrantow
  • jtrantow
11 Feb 2025 17:10
Replied by jtrantow on topic PWM with a 7i96 and 7i85

PWM with a 7i96 and 7i85

Category: General LinuxCNC Questions

Sorry I wasn't clear.

I'm looking for 7i96+7i85 firmware.

As of a year ago, see "Install Advice (HOME_USE_INDEX with stepper using an encoder)", the default firmware didn't supply the stepgen index-enable pin.

I need firmware that supports HOME_USE_INDEX and a PWM pin for a VFD.
  • Aciera
  • Aciera's Avatar
11 Feb 2025 17:08

Implementation of a Z axis with non linear characteristic

Category: General LinuxCNC Questions

When you home the machine Linuxcnc uses the Forward kinematics to calculate the Axis positions (ie the values you see in the DRO of the gui) and from there on it uses the Inverse kinematic to calculate the joint (ie motor) positions after homing.
If your machine is moving the correct distances when you issue say G0 or G1 commands then you should be fine.


Don't forget that you need to run 'halcompile --install ...' again after making changes.
  • flexbex
  • flexbex
11 Feb 2025 17:07

try to invert the enable on my mesa 7i96s

Category: General LinuxCNC Questions

Hi I try to invert the enable logic on my mesa 7i96s without luck.# --- MACHINE-IS-ENABLED ---setp hm2_7i96s.0.ssr.invert.00 truenet machine-is-enabled => hm2_7i96s.0.ssr.00.out-00
 
But the signal is still not inverted. Any help on this?

my connection is
5v ->   ena+
ena- ->  out+(mesa)
out- -> gnd

now it is when it is enabled the driver is disabled
  • KrisJ
  • KrisJ
11 Feb 2025 17:00

Implementation of a Z axis with non linear characteristic

Category: General LinuxCNC Questions

Thanks Aciera!

I went through the process described and tweaked around a little and I think I got it to work.

Now I'll admit that I'm having a bit of a hard time to wrap my head around exactly what the inverse transformation is used for. I think I got it right but even when I try to deliberately sabotage the inverse formula I can't see any errors or different behavior in AXIS.

I guess what I'm asking is if there are any simple way of testing that I got the inverse formula right?
  • kor
  • kor
11 Feb 2025 16:46 - 11 Feb 2025 16:47
Mesa with Ethercad connection was created by kor

Mesa with Ethercad connection

Category: Driver Boards

Hi everyone,
I know this question has come up before, but are there any current plans for an EtherCAT version of a Mesa Card?In my opinion, such a card would be a fantastic addition, especially for setups involving encoders or more complex configurations like Smart Serial connections.

For those retrofitting CNCs, the benefits would be substantial. For example, if you purchase a new spindle servo with EtherCAT, you could simply add a Mesa EtherCAT card and consolidate everything into a single communication line.

The challenge right now is the lack of high-quality, affordable EtherCAT options. Most available solutions are either industrial-grade (and prohibitively expensive) or limited in functionality. As a reference, even used single encoder cards from Beckhoff cost around 100€ or more.

It feels like there’s a real opportunity here, particularly for encoder cards. Personally, I’d love to have the option to integrate linear encoders into my axes with ethercad. And in my opinion it would future proof the mesa cards.

Just wanted to share my thoughts—what do others think PCW?
  • MaHa
  • MaHa
11 Feb 2025 16:09
Replied by MaHa on topic Z probing with G38.4

Z probing with G38.4

Category: Advanced Configuration

To give an answer, i just tested on my machine. I think the probe tripped error is momentary, to avoid a bad crash, and stop movement. Just cancel and ignore that message and continue.
On my machine it worked to release from toolsetter while probe tripped

G91 G38.4 Z2 F50
G0 G90 G53 Z0

 
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