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I made:
and files was in:

Copy that just was curious!

Glad to hear you’re getting better results

zz912 wrote:

It looks good BUT the file
~/linuxcnc/configs/sim/gmoccapy/macros/change_g43.ngc
is created after load sim configuration. For example in my computer this file dont exist.

In my RIP installation file is here:
/home/zdenek/linuxcnc/linuxcnc-master/configs/sim/gmoccapy/macros/change_g43.ngc

This scripts must work also in debian instalation.

It is defined here:
github.com/LinuxCNC/linuxcnc/blob/1c72d4...ipts/linuxcnc.in#L53
But I dont know, how to use it.

 

Did you build a package from master and installed it?
I am pretty sure that the change_g43.ngc file should be next to the change.ngc file in the directory because all files from this folder are copied so this one should be copied as well.

"~/linuxcnc/configs/sim.gmoccapy/macros" (or similar)

Having studied the information a bit, I think you are using something like this. This is an interesting method, but it has a number of its own shortcomings. In addition to 7745, there are many more successful chips (for example, ZSSC3123AA2R, MAS6513, PCAP04, or the simplest   cav424 with an external ADC).

I will reveal the details that I found out on my own and were hard to find on the Internet:As for AD7745/AD7746, I tried to use it as a controller for gas burners. It was not easy because it worked on the desk, but during cutting, the gas changed the parameters very much and the AD7745/AD7746 measurement method was not suitable.1. It is not suitable for lasers because the reading is too slow 90Hz.To make sense for Lasers, the absolute minimum sampling is 500Hz (2ms), I have 3650Hz sampling but I do not want/cannot reveal why this value is chosen and it should be selected for a specific type of processing.2. AD7745/AD7746 have a measurement range of 17pF (60pF tollerant), which is definitely too little because the parasitic capacitances on the wire, head, etc. are 50-200pF3. The useful measurement range of the distance is 0.1pF - 30pF, although for some types of nozzles the range may be wider4. I chose the method of measuring the capacitance charging time, although I also experimented with measuring the frequency as in BCL-AMP BCS, which was a bit less stable but also very good.5. Unfortunately, I did not find any ready-made circuit like AD7745/AD7746 that would be suitable, and I had to design everything from scratch. 

Hi everyone,I've started developing an I/O board using the Raspberry Pi Pico. The prototype will feature 8x 24V outputs and 16x 24V inputs, communicating over Ethernet UDP with a real-time HAL driver. If everything works well, I plan to develop additional boards with step generation, analog outputs, and encoder inputs.At the moment, things are still evolving—I'm currently having the first batch of 5 PCBs manufactured and have already ordered the necessary components. Communication between the Pico and the real-time HAL is already working. :)I'll keep you updated as the project progresses!

Thank you for the input!

Just got back to the machine.

Was not sure what value to set maxerror to so i started with 0.001. It did pretty much eliminated all overshoot, but i also feel that the P value has no effect anymore. A P value of 5 or 100 have the same response curve.

I tried milling with P=2 and maxerror=0.001 but still got a rpm drop of about 70 revolutions. Also tried P=5 and got a drop of 130 revolutions!

If i up the feedrate while under load i have the feeling i could easily stall the spindle.

Maybe the vfd is faulty?´

Also anything in the VFD setup that slows response will limit the highest stable P term.

Would reducing or disabling the startup acceleration also count here?

I attached a image of halscope with encoder feedback, speed cmd and pid output. The pid is working and trying to combat the drop, so maybe the spindle gearbox is not dynamic enough to respond quick enough? In the image the difference is not so big but again if i increase the load the difference gets much bigger.

Still using the fine cut consumables but much faster cut rates. The slag pops right off now. You can see where I’m getting alittle wiggle around sharp direction changes so I’m not sure going up to 250”/min will be beneficial with the standard consumables.

There is no change, but I think it is worse. Because immediately after starting Linux, there was a warning message.

I ordered an i5 - 2500к processor.
It will arrive tomorrow and I will test it.

JTknives wrote:

Can you pass a message onto the sheet cam guy?

They have an active forum. Ask there
forum.sheetcam.com/

I tried using MesaCT to generae the ini and hal files but upon loading in linuxcnc, it produces an error.

Debug file information:
Note: Using POSIX realtime
./main.hal:31: Pin 'hm2_5i25.0.7i77.0.4.analogena' does not exist
2243
Stopping realtime threads
Unloading hal components
RTAPI_PCI: Unmapped 65536 bytes at 0x7f0b2d806000
Note: Using POSIX realtime

I do not know how to proceed. Kindly advise.

For information purposes,
Drive 0 - x axis
Drive 1 - y axis
Drive 2 - z axis
Drive 5 - Spindle

Regards,
Kelvin
 

JTknives wrote:

I have been searching around and can’t seam to find a dedicated QTPlasmaC sheetcam PP. I looked in sheetcam and found LinuxCNC-PlasmaC but not sure if that’s for the QT. Any help would be greatly appreciated. Thanks guys. 

I suggested to Les a few years ago that he change the name, but it didn’t go anywhere.

Even know the GUI is QtPlasmaC, the component is technically still PlasmaC, so I guess it works? I can definitely see how it’s confusing to new folk though.

Cuts look nicer. Did you change over to 45A consumables as well, or just update everything?

Hello,
I am looking for an XML file for a Beckhoff controller, can you post the file here, I would be grateful. The file you need seems to be at this link:
forum.linuxcnc.org/ethercat/47534-etherc...e-configuration-woes

Can you pass a message onto the sheet cam guy? I noticed that thy have a plasma tool plugin now that has a slick feature for building hypertherm 45xp tools. Well I noticed thy had steel fast and steel quality in the drop down. But I think those are swapped. When I select steel fast it is the speeds for quality and the same is true for steel quality as its the faster speeds out of the manual. I was going to contact them but couldn’t find out how.

Jogging all good now, so paying attention to getting the variable resistor potentiometers to control feedrate and spindle speed overrides.
This was complicated by the fact the Hurco has these pots internally fed with 5 volts, and I am reading the analogue voltage via 7i73 pins that tolerate 3.3volts max. However, addressed that with a resistor bridge. Then I want for the pot controls to also change the gui sliders on the Axis screen.
The attached postgui hal makes that all work, and by adjusting the scale figure can get the mid positions to align with 100%, near enough.
To get that right I have been stopping and starting the Axis gui, over and over without homing the machine and find that this "unrecognised error" message crops up sometimes, freezing the rate sliders. The Gui can stiil be shut down normally using the top right X , and generally on a restart, it works again but would like to know what the cause is.
Thanks
I have never seen this error before until I used the mult2 function in this hal.

Thank you so much. I just tested it out and I do t know what voodoo you crammed into this new program but holy crap. It’s cutting better and way faster than it’s ever cut before. The ohmic is wicked fast and doesn’t even tap the part like it did before. Also I’m using the magic hole feature and it’s cutting these small holes amazing. 1/4” holes come out about perfect with no need to be drilled anymore. I wish I would of upgraded years ago. Huge Thank you to everyone that worked on this.

I’m cutting this at about 160” min which is 2-3 times faster than I was and the results are way better.