I managed to get the machine to power up and boot into LinuxCNC, and I’ve put together a basic configuration just to test it on the bench.

What would you do next? I was planning to load the driver for the 7i74 onto my 7i97T so I could configure communications with the other boards.

I have downloaded and flashed Debian Trixy Linuxcnc from the download page twice now. And every time I try to install, it gets stuck at configuring the sources. I do not think it is a network problem because when I run the live instance, I can browse the internet. Please can someone offer a solution, or tell me where I can download the Bookworm version, which I know works.
Thanks
Aaron

if I go to V- instead of power supply ground IN2 lights...is that ok? or does it indicate a different problem?

I forgot about that.....no

Does the yellow LED near IN2 operate as expected?

Hi...I used pin that is labeled iN2....and put in Hal as GPIO 002....when I tried to test in Halshow nothing happened....i checked wiring seems ok....I did not know if i am missing something in Hal...I only put  info  in the x axis section...
.
# ---# external input signals...under this part it is blank..


setup home / limit switch signals---
net x-home-sw <=  hm2_7i96s.0.gpio.002.in_not
net x-home-sw <= joint.0.home-sw-in

Thanks for reply!!

TB3 pin Pin 2 would be GPIO 01 (but actually you should be using INM pins, not GPIO)

Pncconf setup would be something like:

 


(invert it using NC switches)

You should also use halshow to verify home switch operation before attemting to home

Ok, that makes sense, I deleted the step config file. Currently I can jog XYZ in the pnc config "test this axis" .
Gmoccapy  jog does not work but shows movement on screen.
Thanks
 

pb12 wrote:

Had to drop back to V2.7 to get a reasonable jitter number on my old Athlon X2 CPU. (20,000)
 

Very bad idea...
Wheezy with RTAI has low jitter on some motherboards, but today this is time waste only.
This is 32bit Linux, Python 2.7, no realtime ethernet, and old LinuxCNC not compatible with modern, even at configs level, so you get many useless experiences...

Yesterday I installed Debian13.5 with LinuxCNC 2.10 on my Lenovo M725s SFF Ryzen 3 8GB 128GB M.2 NVMe (not newest but still modern), jitter is 20,000 and all works well.
This model has LPT connector at motherboard, but you can buy cheap second hand PCIex to LPT card.
In my opinion, LPT is obsolete, but if exist, you can serve some auxilary signals by this.

There are cheap 7i92 clones on Aliexpress.
I have model similar to original MESA, and chinese version with I/O drivers, both works well.

In my opinion, the future is ethercat and modbus. 
This is more cost and more dificult, but works like in dreams...
 

Hi...I have a mechanical home switch wired as seen from others but does not seem to be functioning...I am not sure I have hal right for x home switch...I have pin # 2  from mesa 7196s going to nc on switch...Input common to 24v ground on  power supply  and switch common to 24v power supply v+...I am not very good with electric so any help would be greatly appreciated..

Thanks,
Rick

Any suggestions would be appreciated.
Thanks
 

I had the same issue with shipping/duty. I purchased a 7i96s and I don’t regret it.

rhscdn wrote:

Just an FYI, Mesa cards make network jitter much less of an issue.
 

Yep...... and as I want to understand and experiment with cnc a Mesa card (or Ethercat device) would be the way to go. I was definitely considering a Mesa card (7i96)
I do have another more capable PC. Would need an ethernet card for Mesa. Or parallel port card. Or ethernet card + Mesa for my old Athlon X2 (2 core) hardware
Freight is the killer USD80 just to get a Mesa card to my country.
Many decisions ..............

Phil