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  • frayja2002
  • frayja2002
21 Sep 2024 09:57 - 21 Sep 2024 10:13
Replied by frayja2002 on topic jogging using USB DragonRise pendant

jogging using USB DragonRise pendant

Category: General LinuxCNC Questions

Yes that got it going. I had missed that... I thought it would be related to the jog value on the screen.

Are there any pin values that would allow me to use the equivalent button on the UI?
I am using QTDragon UI by the way.

There are a lot of functions in the UI that I would like to link to the USB buttons.

Can someone point me to a good tutorial on this subject.

Thanks
Alex
  • bladekel
  • bladekel
21 Sep 2024 08:18
I need your experience for my new setup. Mesa, Beckhoff or Raspberry pi? was created by bladekel

I need your experience for my new setup. Mesa, Beckhoff or Raspberry pi?

Category: Driver Boards

Hello to all.

I'm using LinuxCNC about 10 years with parallel port PC on several machine. They were succesfull setups.

But now I have a new project and I think that something needs to be change...

Let me explain my new project;
  • 5 axis, step/dir driven motor drivers
  • 1 home switch for each axes, totaly 5
  • 1 end switch for all axes, totaly 1
  • 1 e-stop
  • 4 extra digital outputs
  • 2 extra digital inputs
  • Sum up;
    • OUTPUTS: 5 step, 5 dir, 4 digital output
    • INPUTS: 9 digital inputs
 
  • The LinuxCNC is going to run on Raspberry pi ( not decided whether 4 or 5)
  • There is a teach pendant with touch screen( there will be no screen more), everything is going to be controlled by this screen
  • The distance between screen and machine will be min. 2 meters.
  • The machine is going to be used for welding in industrial environment.
Here is what I couldnt decide or have a reservations...
  • If I will place Raspberry pi inside the teach pendant, there will be a 3 meters distance between I/Os and pi. So I have to use MESA board or Ethercat I/O board (I have never used any of them before) to combat with electronical parasits.
    • Negative side of using MESA board is there is no domestic dealers in Turkiye and if I wanted to buy externally there may be some problems with customs. If I overcome this problem, this card is ideal for me...
    • Negative side of using Ethercat I have no information in this world. In Turkiye I can easily find Beckhoff products and I think I have to use EK1100, EL1008 and EL2008 for my setups. But there is a big question for me, Can I drive stepper drivers with EL2008(digital output module) or Do I have to buy a EL7031 (motor controller) ?
      And as a similar question, Can I read an encoder with EL1008 or Do I have to buy EL5101 (encoder reader) ?
  • If I will place Raspberry pi outside the teach pendant, there will be a 3 meters distance between the screen and pi. So I will use 3mt HDMI cable. On the I/O side I will use raspberry pi's GPIO pins. Do you think will this be a problem with 5 axis movement?
I know it is a little confusing but its same here ....
Can you offer me an another solution or Is my path correct?
  • Unlogic
  • Unlogic
21 Sep 2024 08:11
Replied by Unlogic on topic jogging using USB DragonRise pendant

jogging using USB DragonRise pendant

Category: General LinuxCNC Questions

Make sure that you have the jog speed speed set else the machine won't move when you try to jog it.

Here is an example:

setp halui.axis.jog-speed 100
  • Creative25
  • Creative25
21 Sep 2024 07:33 - 21 Sep 2024 07:35
Replied by Creative25 on topic Building a chain driven Plasma table.

Building a chain driven Plasma table.

Category: General LinuxCNC Questions

  I got the water tray into an acceptable condition.
I removed the problem welds and
welded some slats underneath to straighten things out. (The sheets had a radius when they came back from bending)
Then I re welded them..

Next time I would cut them in such a way that seems will be shorter and all in the same direction. I hope this post will help some others hobby welders avoid the same problems.
  • Creative25
  • Creative25
21 Sep 2024 06:36
Replied by Creative25 on topic Building a chain driven Plasma table.

Building a chain driven Plasma table.

Category: General LinuxCNC Questions

I must say viaconstructor works quite well for plasma. Only thing you have to do is choose laser cutter under machine and set the tool with.
I cut some complicated shapes like an Elephant.

However on one file a single shape I could not choose a starting point. Is there a bug with the software.

However I found an easy work around I just rotated the part and moved tho cut on a different part of the metal sheet.
  • rajsekhar
  • rajsekhar
21 Sep 2024 04:11
Replied by rajsekhar on topic Error while Running Linuxcnc

Error while Running Linuxcnc

Category: Driver Boards

Today I removed the graphics card and ran the machine.

Latency data in attached screen shot. Latency test and Linuxcnc run together.

I increased the servo period.

but "error finishing read" continues.

What to do?
  • frayja2002
  • frayja2002
21 Sep 2024 03:42
jogging using USB DragonRise pendant was created by frayja2002

jogging using USB DragonRise pendant

Category: General LinuxCNC Questions

Hi all

I am trying to setup an external usb pendant using a dragonrise USB zero delay board.
The board is showing up in linuxcnc but I'm having a but of trouble with the pin connections as follows.

#
# USB Buttons
#
net Jog-X-Plus         <= halui.axis.x.plus         <= input.0.abs-x-is-pos
net Jog-X-Neg         <= halui.axis.x.minus         <= input.0.abs-x-is-neg
net Jog-Y-Plus         <= halui.axis.y.plus         <= input.0.abs-y-is-pos
net Jog-Y-Neg         <= halui.axis.y.minus         <= input.0.abs-y-is-neg
net Jog-Z-Plus         <= halui.axis.z.plus         <= input.0.btn-base6
net Jog-Z-Neg         <= halui.axis.z.minus         <= input.0.btn-base5

When I press the button both the input.0.abs-x-is-pos and the halui.axis.x.plus pins light up but I get no motion.
I have tried with the machine homed & unhomed.

Is there a QTdragon pin that would be better to use?
I am testing this on LINUXCNC - 2.9.2-168-ge7cd5217d9

Thanks
Alex


 
  • visibleveal
  • visibleveal
21 Sep 2024 02:25
Replied by visibleveal on topic Calibrating A axis

Calibrating A axis

Category: General LinuxCNC Questions

Thank you to everyone who dealt with my problem homing, we are now up and running and calibrated on X, Y and Z axis. My question here is the A axis and Scale in the ini file, i really do not want to back into stepconf as it wipes out everything i have altered in the ini and i have to start from scratch, which is frustrating lol)
Our rotary axis is a small one for making my wood jewellery, it has a ratio of 4:1 and we run on 8 microstepping we worked the steps out to be 17.78 but i don't think this is what i put in the scale on the ini file, or is it????
Could anyone who runs a 4th axis give us any information on this as we are used to Mach4 and have only just started with LinuxCNC, any info is usefull such as calibration and how you do it, working out the steps per degree (just in case we have done that wrong) would greatly appreciste the help snow rider

Great to hear you have your X, Y, and Z axes up and running! When setting up the A-axis (rotary axis) in LinuxCNC, particularly when switching from Mach4, the key is ensuring that your steps per degree (or per rotation) are properly calculated and input into the
INI
file under the
SCALE
setting for the A-axis. 
  • SteveatSteelCut
  • SteveatSteelCut
20 Sep 2024 22:29
Replied by SteveatSteelCut on topic Showstopper Plasma Cutter retrofit

Showstopper Plasma Cutter retrofit

Category: Show Your Stuff

I was experiencing problems again yesterday... I will be experimenting in this space next week.
In qtplasmac when you start getting problems and your half way through cutting a program you are just stuck.... you can't change many things without closing the program and reopening and reloading everything. For this reason I stuck it out and kept trying to cut with faults. (Torch wouldn't fire. The pulse function was working fine. Ohmic vaults were hovering on mid 23's ) . It didn't want to work even with ohmic sensing turned off. Eventuality I finished the last few cuts. Productivity was not good.
  • SteveatSteelCut
  • SteveatSteelCut
20 Sep 2024 22:18
Replied by SteveatSteelCut on topic Plasmac Post Processors

Plasmac Post Processors

Category: Plasmac

I tried lots of different things and in the end I have changed to sheet cam.
I use the nestmaster to create a nest and then use sheet cam to create the gcode for qt plasmac... seems to be a good solution.
  • Unlogic
  • Unlogic
20 Sep 2024 16:01
Replied by Unlogic on topic Optimum Optimill MH50V CNC conversion

Optimum Optimill MH50V CNC conversion

Category: Milling Machines

I did the first proper test of the new spindle servo motor today milling some 7050 aluminium.

The test was done using a 80 mm face mill at 100% width of cut, 0,5 mm depth of cut, 2000 rpm and a feedrate of 600 mm/minute. This worked splendid.

Not only is the machine much quieter but the finish at high feed rates is noticable improved which was unexpected. I suspect that this is the result of removing all the gears and shafts from the transmission as there are much less vibrations from the head now.
  • PhilipME
  • PhilipME's Avatar
20 Sep 2024 15:21
Replied by PhilipME on topic New and Working RTAI debs for 2.9

New and Working RTAI debs for 2.9

Category: Installing LinuxCNC

Thank you and apology again for dump questions

It is working now beautifull

I had to issue sudo apt --fix-broken install

and sudo apt-get install python3-pyqt5.qtwebkit



 
  • PCW
  • PCW's Avatar
20 Sep 2024 15:11
Replied by PCW on topic Error while Running Linuxcnc

Error while Running Linuxcnc

Category: Driver Boards

Those temperatures are all fine.

I would suspect failing PC hardware with the 49 ms latency spike

Can you try without the graphic card installed?
  • royka
  • royka
20 Sep 2024 15:08
Replied by royka on topic Can the OPI5 be Configured to Run LCNC?

Can the OPI5 be Configured to Run LCNC?

Category: Computers and Hardware

@briansm The 6.1 kernel is a bsp kernel so I doubt it patched successfully, you might have more luck with patching the 6.11 kernel including these patches and use the right config:
github.com/armbian/build/tree/main/patch...rockchip-rk3588-6.11

But some things might not work yet. If you can't figure it out, maybe I'll take a look at it sometime. But for now I don't see much added value in it.
  • arabel1a
  • arabel1a
20 Sep 2024 15:06 - 20 Sep 2024 15:08
Replied by arabel1a on topic LinuxCNC whit Sercos II

LinuxCNC whit Sercos II

Category: General LinuxCNC Questions

Hi!

I've made my LinuxCNC work with SERCOS II (fiber optics). Now my machine (Trumph TC2000R) has been working well for almost a year, and I'm positive that there are no bugs.

My steps were:
1. Bought a cheap SERCOS II PCI extension card from Beckhoff (FC7501, ~$150), plugged it into the free Beckhoff 3 suite
2. Sart sniffing the digital signals using my $10 logical analyzer from aliexpress
3. Set up all drives using the Beckhoff, so I have a full log of startup messages and synchronization process
4. Parsed it
5. Captured and analyzed a lot of command messages, so now I understand how messages are built
6. Made a dummy STM32(~$200) device, which takes a SERCOS message from the Ethernet and transmits it into the IO pin. You don't even need a real-time ethernet card, because SERCOS II is synchronous and the period between timings is fixed. My module even operates in user-space!

To sum up, the whole Sercos II protocol was re-implemented, and I developed a Linuxcnc module that prepares a message. The code is available here: github.com/arabel1a/sercos2-linuxcnc

However, it is more proof-of-concept than a plug-and-play solution. The main drawbacks include:
1. You need a capture synchronization messages (first few seconds after startup), I wasn't able to reimplement this stage.
2. STM32 hardware code (which just sends a message received on ethernet) can't be published due to some legal reasons.
3. The code is a bit messy, and not any configuration is supported. I used my drive in velocity command mode with feedback other modes are untested.

Anyway, my machines have been working for almost a year, and you can reproduce it with the code above. It costed me <$500 and a nine months of work, which is much less than a brand new NC unit from Trumph ($10,000!) If someone would be interested in making a more user-friendly solution, I would be honored to assist you -- contact me via github.
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