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Because I wanted a proper configuration so I thought there are many experts who can help me with configuring linuxcnc.

You must have encoder feedback as that is position feedback.
Velocity feedback by itself will result in slow drift and loss of position.

pncconf does not support the 7I97/7I97T but you can use mesact
instead (see the mesact section of the forum)

Alternatively here is a basic hal/ini file set, note that you still
need to go through the tuning/setup guide that tommylight
posted a link to, and edit the ini file to set your machine parameters
plus edit the hal file to make it match your limit/home/spindle
etc setup.

 
 

Did you read the bit about it being for Mesa hardware ? It’s not a generic SPI driver.

And did you read the bit about it not being all that fast ?

I’ve tried it on a RPi 5 and it just doesn’t cut it.

Oh, no worries. Thank you for the reply!

Hmm, so the thing I'm using shouldn't actually work or is it just going to be damaging in some way if I run it like that or cause other issues then? It does seem to be working the way I hooked it up but if it's going to wreck something maybe it's not good to run it like that.

Also, where should I place the resistor? I'll see if I can figure out how to go about doing that if it's something I should be doing to prevent damage somehow.

A brake sounds exactly like what I might want to use too. I'm guessing there are specific types or brands I should be looking for to make it brake when the power is lost to prevent the spindle from falling. I have absolutely no idea how to determine if it's going to be compatible with things or even how to go about hooking one up but I suppose that's some more things I'll have to research.

Thank you!

Have I written something wrong?
Would you like to respond to my statements?
If not, PLEASE let me know, then I don't have to wait any longer

Thank you for your understanding

thanks, I've read that already. I just wanna know if it can be used for orange pi too?
cause for raspberry there is another one named hm2_rpspi

Not too sure if that kind of latency will be good enough, you may just get "following errors" when connected to real hardware. With those latency figures I would not attempt to run anything except a sim config (which is a simulation not talking to real hardware) to test some gcode.

When it's said laptops aren't a good candidate, it's gospel. So if you get any errors when trying to setup a system with the laptop, especially with that kind of latency, the advice you will get is to get a PC.

I think one user mentioned some slight success with an old ThinkPad, but wouldn't use it to actually run a machine.

hm2_spi is for mesa based fpga devices.
Here the man page and have a read
linuxcnc.org/docs/html/man/man9/hm2_spi.9.html

Can anyone help me that how can I establish a SPI connection with FPGA?
Can I use the hm2_spi? or is there any other stuff that works with orangepi?

Sorry, looks like I lost a post or was distracted. The 7i76e which I saw you were using should use PNP prox sensors and your link was NPN.
You can use NPN sensors with a 2.2 k 1 W pullup resistor.

You  may  be able to set up a brake with your servo drive on the Z axis. 

I will give that a shot, thanks!

I wish I had seen this sooner. I gave up late at night an re installed windows and mach3 just because I really needed to get other stuff moving.and needed parts made.

I think I'll come back to this later with another pc, or maybe a mesa card.
but who knows I'm stubborn as hell so might be sooner.

TL;DR to anyone in the future wondering about PCIe to PCI adapters do they work? sorta. found my card and all details looked correct but i couldn't move steppers with it or even get the parport tester working so beats me.

Try this (works for me):
Create a file '.axisrc' and paste this into it:


[edit]
The above is created if you check the 'Force Axis to Maximize' checkbox in Pncconf.

I did some searches but didn't see an answer... is it possible to have AXIS start maximized?
Thanks,
Jerry

"It is very unsettling when my 8k lb machine tries to walk around the shop floor and I know I'm not the only one with this issue as I have had this conversation with several others experiencing this issue. I cannot tell for certain but it appears from your video that your machine probably weighs what one of the vises on my table weighs so it's likely not as big of a deal and hardly noticeable with such a low moment of inertia."

actually it is worse with mine. the machine weight about 200lbs. it moves several inches around if its not bolted down. but i also had issues with my brother tapping centre which are well documented on this forum - video posted earlier in this thread too. The motors would not tune, largely because linuxcnc's infinite jerk wreaking havoc on the slot responding servo drives.

"Coupled with s curve acceleration seems it would do wonders for these issues.
....
You mention jerk control, can you expand"

S curve acceleration IS jerk control. Jerk is the mode of motion above acceleration. (position, velocity, acceleration, jerk). Technically we are not talking about s curve acceleration her, but rather s curve velocity. acceleration become trapezoidal. jerk becomes a constant. You can keep going up the chain of course and get s curve jerk, but s curve velocity is "good enough" here.

All I am trying to say here is to not mix jerk control and constant velocity functions and ideas in this thread. They are separate things and need to be tackled separately. Once you start mixing in trajectory planning concepts it confuses the topic a lot. jerk control FIRST, then the rest. Otherwise you are trying to build the house before the bricks have been made.

Jerk control on exact stops will fix 80% of your issue for what its worth. Through the program run, constant velocity is "breaking" every so often (every few second or even many times a second depending on the program). When it breaks at a transition that cannot be blended, you get an exact stop, even if you have not technically exited g64. Jerk control needs to be applied to those moves ideally. While g64 is actually being continuous, jerk is already limited to a good degree.

Hope that makes some sense.