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i will probably go for the bigger motors since i want to unlock more milling capabilities. When would the deformation happen, at high load or acceleration?
i dont really want to wait for the cards from the us and the 7i96s should have enough input/outputs and for the less important stuff like lighting, button etc i will use arduino for expansion. Yes it has the drum style atc with the mechanical drawbar.

@Ehsan,
Start a new topic for the robot.
Thank you.

Apologies for the weird formatting, I tried to change it but my edits do not seem to take effect. I hope the idea is still clear. I'm not really familiar with posting on forums

PWM, the transistor is there to just invert the signal from active high to active low.
If that info is correct, you can controll it using parallel port as it can easily do PWM.
BTW, PWM does not chage frequency, just the pulse width/duration.
The frequency can be set once and it does not change.
Any idea what that frequency should be?
Not very important as most will work with quite a wide range of frequencies, so you can easily test.
And i am pretty sure there is no need for filters for this.

Probably the 400W ones would be enough, but you can always limit current to bigger ones, you can not add current to small ones.
BTW, if you do get 750W ones, first thing you do is limit the current ss they can easily deform the ballscrew if pushed.
Do the old drives work? Are they brushed or brushless?
I tend to use old ones if they are in good condition, so just in case you need analog +-10V for old drives, Mesa 7i96S with Mesa 7i85 and 7i83 will do just fine, although if you wait a bit you can probably find 7i97T as they are awailable in US, so take some time to get to Europe.
The good thing about the above 7i96S/7i85/7i83 combo is that it will work for step/dir and analog drives, so that is what i would get most of the time.
Does it have an ATC ?

Hi all, hope you are all doing well.

I've tried installing the linuxcnc 2.9.2 ISO as described here . I initially tried to download using the link on the downloads page (using firefox 126.0 (64-bit)). This went fine (20MB/s, sweet). I got the file "LinuxCNC_2.9.2-amd64.hybrid.iso" and compare the md5 checksum as well as the SHA256. None of them match!

My result:
md5: d541b51f02ecc6f07fe652faa0fc4a2b  LinuxCNC_2.9.2-amd64.hybrid.iso
sha256: a2c9df3d1a16c2e09c66bbb87869be876892fd6bf9182fc39009c944cbf8f800  LinuxCNC_2.9.2-amd64.hybrid.iso

Results in the article:, I got the following response:

failed on url www.linuxcnc.org/iso/LinuxCNC_2.9.2-amd64.hybrid.iso
could not read control file from URL www.linuxcnc.org/iso/LinuxCNC_2.9.2-amd64.hybrid.iso

Undeterred, I continued with my wrong checksum ISO and used

dd if=

LinuxCNC_2.9.2-amd64.hybrid.iso

of=/dev/sdb

to write my the ISO to my FAT formatted USB drive. I plugged it into my sacrificial PC and tried to do a live version. However, once I saw the initial blue Debian 12, I was greeted with a bunch of errors along the line of:

SQUASHFS ERROR: XZ DECOMPRESSION FAILED DATA PROBABLY CORRUPT

together with some specific address that was apparently not working. I could get a CLI using ctrl+alt+f?3? I believe, and execute some basic commands (cd, ls, mkdir).

Anyway, I've googled a bit and what I understand 3 things could have gone wrong:
1. wrong iso.
2. incorrect writing to USB
3. fault in USB.

I don't think I did anything wrong while writing to the USB, but it could be that my USB is faulty. To rule that out I ordered a new USB stick. Lets see what it does when it arrives in the mail tomorrow. In the meanwhile, I hope to start the discussion on point 1:
-How come my checksum doesn't match, and why can I not use zsync?

Any ideas / tips / suggestions on this point or any other point in my message would be greatly appreciated.

Many thanks,
Jerry

That looks OK (I assume you have 2 yellow LEDs illuminated on the top edge of the 7I76 card)
7I76 TB1 field power should be supplied to pins 1 and 8

(TB1 pin  5 is only used when W1 is on the right hand position and VIN is supplied separately)

Remaining issues may be either:

Wrong cable pinout or bad cable
Hardware issues on the 7I92 or 7I76
LinuxCNC setup

Can you power up the system and run this command and port the results here?

mesaflash --device 7i92 --addr 10.10.10.10 --sserial
 

Hi Guys

I am at a loss getting this thing to run. It is not a hobby for me I just need it to work. I am using a Probotix computer, Probotix controller and Probiotix black stepper motors. I have no need of limit switches, no home switches, ability to add later maybe. I need help, I can give the pitch of the feed screws. The table is about 25x25". Can anyone help me?

Thanks,

Ian

I am trying the configs from Trisa25,
I have only 1 motor hooked up.
Could this cause a problem? is there an easy way to modify this assuming 1 axis?

The following happens when I launch linuxcnc:

the drive starts out  _20ry, with the 2 flashing
switches to  _40ry , when  linuxcnc starts, with the 4 flashing
then to  _F0ry, shortly after
The y will flash when I turn the motor

I get no position feedback to linuxcnc when turning the motor.
The following is what linuxcnc prints to the screen.
I'm not sure about the USRMOT: ERROR command 30 timeout
doug@MillingMachine:~$ linuxcnc
LINUXCNC - 2.10.0~pre0
Machine configuration directory is '/home/doug/linuxcnc-dev/configs/my_ethercat_gantry'
Machine configuration file is 'cia402.ini'
Starting LinuxCNC...
linuxcncsvr (10034) emcsvr: machine 'EtherCAT Machine'  version '1.1'
linuxcnc TPMOD=tpmod HOMEMOD=homemod EMCMOT=motmod
Note: Using POSIX realtime
milltask (10048) task: machine 'EtherCAT Machine'  version '1.1'
halui (10050) halui: machine 'EtherCAT Machine'  version '1.1'
Found file(REL): ./cia402.hal
USRMOT: ERROR: command 30 timeout
emcMotionInit: emcTrajInit failed
note: MAXV     max: 100.000 units/sec 6000.000 units/min
note: LJOG     max: 100.000 units/sec 6000.000 units/min
note: LJOG default: 50.000 units/sec 3000.000 units/min
note: jog_order='XYZ'
note: jog_invert=set()
task: main loop took 0.074680 seconds
Shutting down and cleaning up LinuxCNC...
Running HAL shutdown script
HAL: ERROR: pin 'lcec.0.3.out-01' not found
shutdown.hal:2: unlink failed
task: 0 cycles, min=0.000005, max=0.074680, avg=-1.000000, 1 latency excursions (> 10x expected cycle time of 0.005000s)
Note: Using POSIX realtime
doug@MillingMachine:~$
 

What version of LinuxCNC?
That was an issue quite a while back, but normally that should never happen.
TRAJ values are the maximum allowed by any joint/axis, but the separate joint/axis limits should be respected at all times.

Where did you find Octopus for 50$ ?
I paid 89$ for the board and another 50$ for 8 of TMC drives, and probably another 100$ for delivery and customs!
Ordered another one and it got canceled, twice, due to living in a black hole.
Still, worth the money, for sure.
Just to be clear, the moment LinuxCNC gets Pressure Advance, i am switching everything to it, to much cr@p running Klipper. I still consider having a machine that can easily burn your house down controlled through USB is a safety hazard, no matter how much safety features it has.
Luckily, never had such issues.

So I have a question to get me edumacated   
So, I've seen a pile of questions related to Step on-time and Step space and it seems there's just a general rule of thumb for some numbers to put in as starting points. unfortunately, it drives my mind crazy. I would gander to think that every driver has a specific number for it but from looking at tech documents it is a bit hard to decipher especially when I don't really understand what it relates to (well somewhat understand). so, if I were to look at say documentation for the Gecko 201 because PNCconf has those settings already defined how would I pull that info out from the documentation or are those settings readily available because it's a drive that has been used more prominently?
I ask because I recently emailed the tech / support department at Stepper-Online and they had no idea what step on-time and step space were. found it rather odd that they would not know what info it was I was after. Their documentation doesn't seem to be lacking and appears to be about as detailed as say Gecko documentation.

Thank you very much.

do you have a rotational work offset set?, check the offsets page and look under R column to make sure it is zeroed out.

the old links still seem to work here. Please try again.