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Do you get latency warnings when you run LinuxCNC?
Are you still using the same PC discussed here on several topics?
Why do you keep doing the same things and expect different results? Stressing the system beyond it's limits will always fail.
Change the graphic card, get a used one for AMD, or get a used PC.
You had good latency at one point in time, so what happened?
LinuxCNC, one youtube video, no whatever stress test you run, nothing, if that works OK, move on to making chips.

there are a number of industrial PC's on Alibaba/Aliexpress.
Echoing PCW's comments about Intel NIC. I would look for 2 NIC's but you might get more
Probably external Wifi SMA connectors. This lets you extend antennas outside of your enclosure
Also, look for a built in serial port or two for VFD etc. Some have native RS485 ports with screw terminals builtin.
They usually come with a Vesa mounting bracket to mount behind a monitor so it should be easy to mount on a DIN rail. Meanwell have a nice aluminium bracket.

Used "Enterprise" edition PC's worked for me always, The likes of older Dell, newish HP and Lenovo and Fujitsu.
And, yes i have several "industrial" PC's collecting dust in the shop, they are just plain PC in a strange box and with much higher price.

Anyone interested in a 16x40 CNC Lathe? It was a Knuth Servoturn 410 NC lathe. I hated the PLC/Control that was on it so a LinuxCNC retrofit was started. The retrofit is not finished (look at the operators panel) but it does run, and it made quite a few parts for us.
               

Please contact me soon if interested, it has to be moved very soon. I really do not want to send it to the scrap-yard.
It is currently located at:
Lansing Machine Services Inc. (Closing)
425 Network Station
Chesapeake Va. 23320
 

forum.linuxcnc.org/24-hal-components/321...ghts-red-amber-green

Its always best to start with the Axis GUI until you get a working config and convert to other (more complicated) GUI's after you have  it working. QTdragon is nice but there are a lot of finer features for convenience that can get in the road for a beginner. I converted to it from an axis config though.

Set the divider ratio on the board to 1/32 (Needed for Linuxcnc)
Use the thcad calculator here jscalc.io/calc/NTr5QDX6WgMThBVb
Use the plasma divider ratio of 24:1 (an Everlast Quirk) in linuxcnc
Leave the Everlast divider board as 16:1

If you are getting negative values you have bigger problems than config issues.
Check your encoder velocity in halshow, it should be showing around the 0 volt sticker frequency ( / 32)
With the 9 volt battery, it should show near full scale, Calculate what it should be by hand
 

Good morning, I recovered two years ago some of these drives: sanmotion r rs2a03a0al0w00. I tried to communicate with its R-Setup software and they connected to the PC without any problems even if they gave an encoder error because it was not connected (I don't have motors). A few days ago I tried to reconnect the PC but they don't want to communicate... and yet I set the group parameter to 20 on 01 which is the unit number and 21 to 05 which corresponds to 38,400 I used a PC with native serial, Windows 7, set the serial buffers to a minimum as explained in an article on connecting these drives. If anyone can help me, I thank you in advance. Greetings Mauro

Ahh someone was probably trying to fix a problem in the previous control
by adjusting the drive zero.

If your CNC setup works, then don't worry and just move on.

If you are paranoid, just set your max jitter to some really high value in your config.

Don't worry about stuff unless you need to.

I did it and the situation gets worse! if I only move the linucnc window the steppers make absurd noises and change the speed of movement, they are not yet on the machine they are free.. I don't dare to think what they could do at work!
do you mean this SERVO_PERIOD = 1000000 ?
I set it to 35000000. in the video with glxgear it is again at 1000000.

Hello, everybody!

About 1.5 years ago I tried going the Remora route on my NVEM V2 with the STM32F207 and a Raspberry Pi 4. After a steep learning curve I finally managed to get the motors to turn, but experienced an issue where the motors would stutter, or skip steps, for some reason. Despite some kind peoples best effort to help, I was never successful in solving the issue and my PrintNC has been out of order since then.

I finally gathered some energy and wanted to give this another go, so I bought a mini-PC, a Lenovo M93p, mainly because I feel more comfortable using a real PC rather than a RasPi, and because it feels like there is more support for it.
Anyway, I followed all the same steps as the last time to get Remora up and running, but unfortunately the result is the same, the motors turn, but stutters.

1.5 years is a long time in the world of open source firmware development, so first of all I would like to ask if the Remora-NVEM repo is still the latest one for the NVEM V2? Or has the old NVEM V2 been integrated in another repo and has seen some updates since?

My next question would be, if it turns out that I simply can't get the NVEM to work properly, what is the board to buy nowadays? Is it the EC300?

Regards,
Christian

Hello all. I'm having some issues with getting my THCAD-2 setup with the Everlast 82i. I'm pretty sure I have all the settings correct. I opened the Everlast and set the jumper to the 16:1 divider ratio (as suggested). On the THCAD-2 I used the 10:1 (W1 Up setting) and left the card divider on 1. I used pnfconf to configure the THCAD and got the following settings:

Arc Voltage Offset = 100200.0
Arc Voltage Scale = 0.000199

In Qtplasmac I'm getting a -20 voltage reading instead of 0 V. I set the machine to run a small bit of G code and measured the voltage coming off pins 4,6 from the Everlast. This is consistently getting ~4.5V when running at 40A cut power. When I connected a 9V battery to the I+ and I- directly on the THCAD-2 the power in HALSHOW is jumping all over the place. However, when I connect the wires from the plasma back to the THCAD, I get no indication of any voltage when running a job.

Any help you can provide would be greatly appreciated.

I would be interested in Norbert's opinion.

UPDATE

okay, I'm feeling ashamed and stupid.

so the servo drives have 5 potentiometers at their front for several adjustments. guess you already know where this is going...

offset 1 and 2
rpm
P as of PID
and current

i already tried to adjust the offsets with zero effect days ago.

turns out you have to turn the potis like 8 times to get an effect from 60% to 0% offset, you can go both directions so like 20 turns at max. in fact I wasn't adjusting hard enough to get an effect.

and to my defense i bought the machines with minor problems and didn't touch the drives before and x-axis was always spinning like crazy, right from the very first start it ran into hardware endstops.

so it was just a drive someone messed with, before I got it, to get the machine running again.

no more spinning on its own. thanks.

I believe this is the intended behavior.