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I decided to go with Scylla From BTT since I have good support and documentation from grblHAL but I didn't buy anything yet because I still haven't finished mechanical part of my printNC project yet. So let me know of you have good news Because I really want to go with Linux CNC

Yes, start with all the settings that’s possible to get in MesaCT, 

Spindle relay would probably be good enough for now because the mill has a gearbox and 2 speed motor but that’s possible to fix easily outside of software if necessary, 

For some reason there’s a lot of modules that’s missing and causing faults, I don’t know maybe the new changes to 2.9.4 don’t need them and the AI think they should be there and write HAL with functions that’s not supported any longer 
 

Yep, I think you normally tune the inner (velocity in this case) loop first

Yes, you will probably need to setup the MPGs manually

MesaCT should allow you to setup home/limit switches,
your coolant outputs and the Spindle control outputs
(not sure about the spindle PWM)

So I would setup the limit/home switches and various outputs
next ( since support for these is built into MesaCT )

At one point I got these pins to register counts in Halmeter:

hm2_7i95.0.inmux.00.enc0-count
hm2_7i95.0.inmux.00.enc1-count
hm2_7i95.0.inmux.00.enc2-count
hm2_7i95.0.inmux.00.enc3-count

But ended up getting errors for missing module: Motion.so so tried clean install and wiped everything,

MesaCT is a useful tool but haven’t found any encoder settings other than motor encoder setting,

I’ve tried to flash different firmwares also because some firmwares doesn’t have all settings available for encoder and spindle in MesaCT,

At the moment I’m running 7i95t_1pwmd

I think 7i95t is only supported by MesaCT, tried to use pncconfig because I’ve seen posts about people using the 7i95 config and edit I/O mapping and such, but couldn’t find the 7i95 either.

This is the basic function, it’s possible to jog the machine with buttons in QTdragon 

for # 1 and #7 I would use the built-in MPG encoders.

I don't know what if any MPG setup options MesaCT has
(it should be able to setup limit/home switches and spindle controls)

No sure if any configuration utility knows the 7I95/7I95T
MPG count pins but they would be:

hm2_7i95.0.inmux.00.enc0-count
hm2_7i95.0.inmux.00.enc1-count
hm2_7i95.0.inmux.00.enc2-count
hm2_7i95.0.inmux.00.enc3-count




 

That is an amazing list! Just wondering, have you updated it recently ?

I had a version of Sheetcam that could run on Linux without limitations (free version) but I have lost it and could not find it for download anywhere. Any clues on this ?

Thanks

Hello! First of all I’m sorry if this is placed in the wrong category. I’m pretty much new to Linux and LinuxCNC and been busy building a CNC mill but I’ve stumbled up on a lot of problems. 

My first thought was to get some help by using AI (Copilot) to configure Linux CNC but it doesn’t work that well because info online is limited on 2.9.4 so the AI is trying to use solutions that’s outdated for previous versions of LinuxCNC. 

The progress I’ve made so far is to configure and flash firmware to 7i95t with MesaCT and edit hall and ini files to run QTdragonHD and get the stepper motors to move but then I wanted do add 3 MPGs to jog each axis. 

Well that didn’t work that good.. these are the things I hope to accomplish one day: 

1. X-Y-Z MPGs with incremental and continuous movement. 
2. E-stop circuit (input) with reset. 
3. Add limit switches 
4.Closed loop feedback by using glass DRO scales. 
5.Spindle control 0-10v VFD or just relay control. 
6. Inputs/physical buttons: cycle start, cycle stop, 3 position resolution rotary switch for MPGs, 
7. Joystick (switches) to feed X and Y. (Like a power feed on  a manual machine) with a potentiometer to adjust feed rate) 
8. Output for fogbuster/flood coolant. 
9. Output for Compressed air nozzle. 

The list is long, 

I don’t know where to go from here.. 

Errors I’ve got earlier is missing motion.so and other modules, I’ll post the basic ini and hal files to.
 

I have had a good look through the manual, unfortunately, no tuning software but i have looked at these parameters and looks like they can help.

P08-00 Speed loop gain.
P08-01 Speed loop integral time constant
P08-2 Position loop gain
P08-15 Load inertia ratio
P08-19 Speed feedforward gain

Master is 2.10

So you would need to build from source or get a snapshot from the buildbot
to update to master.

BUT... you should be able to just replace the current pncconf pieces with these:

forum.linuxcnc.org/39-pncconf/56464-mesa...thcad-pncconf-screen

( Thanks kworm )


Another option is MesaCT which has had 7I95/7I95T support for a long time.

 

Yes, the AOUT voltages should be very close to 0.0V
at startup, 3.3V suggests a damaged OP amp
or a local (on card) power supply issue.

May have been damaged by a voltage transient.
Plasma tables generate large transient voltages when the
arc starts and stops. This is due to the almost instantaneous
start and stop of current flow.

This means system grounding is very important. It may be
that the PC ground path was enough different from the machine
ground path to cause this kind of damage. This might have been
prevented by having the controlling PC in the electronics case
with the servo drives, or using the 7I77ISOL card to completely
isolate the 7I77 ground from the PC.

Another possible cause of this kind of damage is a problem with the
7I77s 5V power supply. A voltage surge on the 5V supply can damage
the analog power supply and have similar symptoms.

Do the 2 yellow LEDs in the center of the 7I77 card light?
(these monitor the + and - analog supplies)

I should note that it's probably repairable
 

kjlty wrote:

"I would greatly appreciate it if you could replace QPlainTextEdit with QsciScintilla."
 

What is the advantage of QsciScintilla?
Is that a native QT widget?

JT

thanks, will test that.

btw - I have installed the latest release of the linuxcnc debian - 2.9.4 - and there is no 7i95 option, is the version on master newer but not released?

I changed the 5v psu for a 5.2v one. I am seeing 5.03v on the TB1 now. But same jolt and stop issue.
What do you think of the aout0 and aout1 voltages? Is that what you mean by damaged?