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  • FPVUALAB
06 Nov 2025 00:44
Replied by FPVUALAB on topic Bricked Mesa 7i92T
I downloaded the archive for mesa 7i92t cards from the official website, but there are so many different firmware versions that I don't understand which folder I need to copy.
  • FPVUALAB
06 Nov 2025 00:41
Replied by FPVUALAB on topic Bricked Mesa 7i92T
The thing is, I don't know how to do it))
This is my first time doing this, and I'm already panicking because I've been trying to figure it out for over a month))) Now I've decided to ask people for help!))
My LinuxCNC doesn't have any firmware for Mesa 7i92TH at all.
  • PCW
06 Nov 2025 00:08
Replied by PCW on topic Bricked Mesa 7i92T
mesaflash 3.5.16 is the latest

If you want 4 stepgens and 4 encoders, what pinout do you want?

(If for a 7I85S you would use 7i92t_7i85sx2d.bin = config fir 7I85S with 4 stepgens, 4 encoders, 1 sserial port per connector)
  • tommylight
05 Nov 2025 23:59
Moved to "GmoccaPy" section.
  • tommylight
05 Nov 2025 23:57
@Rod,
We can not edit your youtube videos on your youtube studio! :)
-
how is the html code for grin?
  • tommylight
05 Nov 2025 23:55
Replied by tommylight on topic High frequency ohmic struggles
I think there are much bigger issues than ohmic sensing from what you describe, namely bad wiring/shielding/grounding in general, so my strong advice is:
-do not fire the torch before grounding things properly
-make sure the power socket and the machine are grounded and the shop has proper ground rods
-make sure the PC is grounded
-make sure the plasma source is grounded
-disconnect anything ohmic related from Mesa
-disconnect the THCAD from Mesa
-connect THCAD only to plasma source
-wire and test the new Mesa, make sure everything works properly, wire the Torch ON to plasma source
-power on the plasma source and cnc machine and start QtPlasmaC or PlasmaC or whatever you are using
--enable LinuxCNC, jog around a bit, then use the Torch PULSE on screen set to 1 sec (default) ONLY ONCE !!!!!
-did anything move/burn/make strange noise/screen blank/PC turn off or lock/Mesa reset or lost connection/THCAD smoking ?
If any of those is yes, turn OFF everything and go back to wiring/shielding/grounding (goggle Hypetherm grounding they have a nice general guide)
If all above are no, try the pulse again and again, waiting 5 seconds between, make the pulse time 3 seconds and test several times again
If all that goes OK, try to do some manual cutting (use F9 to probe and fire the torch then jog manually), do several short cuts
If all good, power down and wire the THCAD to Mesa, do the same procedure from the line with two - signs above
ONLY if all tests go without issues proceed to wiring and testing Ohmic sensing. Again test from line with two -
  • tar_san
05 Nov 2025 23:55
I have a problem. (EtherCAT Servo motor  Incremental )

1) while Homing by driver ..
2) begin to move  and then push Emstop.
3) Turn on " Machine Power "
4)  Suddenly servo motor move to the previous position( when I push homing button)  really crazy fast .

I think while homing, Servo driver control the position.

So I believe , While homing, LinuxCNC control position must be set by current servo driver encoder pos.

Please give me a hint to fix this problem.

I'm using ..
LinuxCNC Version 2.9.4
Lichuan LC10E Servo motor (17bit inc) 
CIA402, Custom Homing component
 
  • FPVUALAB
05 Nov 2025 22:22
Replied by FPVUALAB on topic Bricked Mesa 7i92T
LinuxCNC penultimate version (and possibly 2 versions before that)
Mesaflash 3.5.16 (was updated a little earlier because it did not recognise my board)
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