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A scope is cheaper than any Mesa card, the MiniWare DSO211 is ~40$ and 212 is ~60$ for two channels.
To "safely" use the Mesa field inputs, 7i84 set in Mode 2 should have 4 analog inputs (00-03) at low resolution and low speed, add a resistor to each input. Probably will not be enough for what you need.
Using FPGA inputs as logic analyzer with some resistors is OK, but care must be practiced as those inputs are very sensitive, and adding zener diodes to each input is advisable. These inputs are fast enough for most uses, are 5V tolerant but with 0-3.3V range.
Any of those will not be very usable for finding interference as all above are DC coupled, whereas you would need AC coupling to measure interference.
And to make things worse, interference from cheap switching power supplies and motor drives and VFD's can in some cases be over 60VPP (volts peak to peak), meaning it can easily destroy any of the above setups.

It is only A and B for counting. You should probably verify with an oscilloscope that the signals from the encoder look like a nice quadrature signal.

RotarySMP wrote:

If you install Andy's "Lathe Macros", you get a set of canned cycles to do all the typical lathe ops, including threading with simple conversational interface. I beleive it works on most of the GUI's.
github.com/andypugh/LatheMacros

I of course use Gmoccapy as I like it modal nature.

 I will definitely check this out. I don't suppose there is a demonstration video? 
I'm trying to visualize this, especially WRT the axis GUI ( perhaps that's the problem?), and if I need physical buttons how many?
 If Axis is not the way to go then need to think about touchy vs. Gmocapy.

My hardware can't get here fast enough.

Move it to plasma section or to show your stuff?

If you install Andy's "Lathe Macros", you get a set of canned cycles to do all the typical lathe ops, including threading with simple conversational interface. I beleive it works on most of the GUI's.
github.com/andypugh/LatheMacros

I of course use Gmoccapy as I like it modal nature.

Now I unplug the TXS0108EPWR and connect it directly to mcu with R1.5k pull up to 5V. it work 

I can find the counting up when the motor shaft is rotated, but sometimes when I let go of the rotation the numbers will continue to count until the shaft is rotated again.
Another problem is that the numbers will only count one way even when the motor is rotated in reverse direction. This may be due to a faulty Z phase for the index. I am investigating further.
 

Re: Failed to load module "atk-bridge"
Not sure how relevant that error message is but according to this
dev1galaxy.org/viewtopic.php?id=1815
you could maybe try:

I do wiring diagrams. For my lathe I used Qelectrotech. It is pretty clunky, but works.

Hello,

for my CNC-Mill i use a Mesa 7i95T card. For extension i bought a 7i74 Interface card and a 7i87 (analog input) + 7i83I (analog servo interface). The Firmware of the 7i95T is 7i95t_d.bin. In this Firmware the P1 Port has only IO Ports (attachment).
On the Mesa Website -> 7I95T -> Software was no Firmware for use with 7i74.
Is there a firmware available for the 7i95T with a 7i74 as a P1 Daughter Card?
 

The latest is the 2.9.3 ISO that is linked in the Downloads page.

This is my first post too and I am a complete beginner as well. I am working through the John Hildreth series of videos which are now 6 years old. He uses Debian Wheezy but advises that one should use the most up to date version. If I follow the link above will that now download the latest version of Debian which I think is Bookworm, as well as LCNC? I have been promising my self that I will learn Linux and as I am a CNC hobbyist this is the start of an exciting adventure.

i found this motor ( Lichuan Ethercat Nema23 closed loop stepper motor 1Nm 3A LC57H256 2phase step engine with driver CL3-E57H for CNC kit ) i think it will be suitable but i want to check if its xml is easily configurable or i if there is someone shared its xml configuration

Wow. Lots of questions!
I have the original quote from November 1982. Some of the castings have 1979 on them as I recall.
$A 89,000 for the machine
$A 600 for the overarm
$A 15,000 for the rotary table
$A 4,000 for the tooling
$A 6,000 for the printer/reader
So about $A 114,600 all up. Looks like the sale went through in July 83.
From Eric James Industries here in Sydney.

The replacement of the Philips 6600 controller with the Heidenhain TNC 155 was done by them in 1987 for about $A 19,000 plus tax.

I've just placed the full manual here for all to read along with the series of videos there that let you know a lot about my machine:

drive.google.com/drive/folders/1NVXGKyaN...cWKjsMfe?usp=sharing

I've marked it up with the things particular to my machine. The lubricants are on page 7.06-1
I spoke to the Gulf and Western rep here and he went away to double check the data for Kluber and was satisfied their Super Blue grease was equivalent or better. It wasn't worth buying all the other greases since I have a 4 liter can of it. This is overkill for all the rest. So I fully stripped the spindle and repacked it. It is the type in the diagrams I sent. So it is typical of a precision grinder spindle. You do need to go through the run in procedure as the spindle runs hot at every speed.
The run time clock on my machine is hard wired through the spindle motor auxiliary contacts, so it runs when the spindle does.It had 4,000 hours on it so the book says repack it.
My machine is much heavier than yours so it's max speed is 2500 rev/min. But it had been limited to 1250 in the parameter list as the star delta timer needed about 3.5 seconds. they hadn't programed things properly so it was possible for the machine to start milling in star mode. I've reprogrammed the Izumi PLC that does the gear change so it stops that happening.
I haven't pulled the horizontal spindle apart. It looks to have the same quill assembly, but there is no manual hand wheel on the Y slide for it. The rack teeth are there on the quill is there but you have to take a plate off the side and undo the clamp by hand. I cant get the quill to move and haven't really tried.
I had some trouble making the photos small enough to attach today. I might try again later. On mine the trick to get the hydraulic ram off the retractor is that the thread has Loctite on it. I think they note it in the manual that you have to heat it. But that is to melt the Loctite, not to overcome some preload.  i used my solder reflow hot air on it, while applying torque and it suddenly came free. you diagram is the same in essense, but the way it assembles is quite different
I think Maho has a rule that they never make 2 identical machines.
My tool holders are ISO NT40 so I have to cut a groove in the parallel part for the clamping claws. How to do it is in the manual above. So there is no pull stud.
The section on the spindle i translated from German thanks to Google. But then I translated it again into understandable English.
My machine is an orphan having the Heidenhain controller. But I think my axes orientation is the more usual. It seems simpler to me to just program the horizontal axis as G18. That is the way Heidenhain do it in their G code examples. Why would the standard have G17, G18, and G19  otherwise?
With Heidenhain they seek for index mark open loop on the encoders. That speed is preset in the parameters for a particular machine. I think that velocity is controlled by the tachos. After finding the index marks there are relays that pull in for each axis and the Heidenhain  go closed loop with the encoders.
I watched your video. My miscible oil seems much higher concentration than you run. I'm using 10:1 water to oil and it looks like creamy milk. hard to tell from the video but you seem to run the cutters faster than the equation I use. I have similar problems with boring. Usually i put a pilot drill hole in first as the over center flute on a slot drill doesn't always seem to work. Heidenhain does that routinely with canned cycles for pockets etc.

More later.
Cheers,
David

hello guys 

i am going to but Lichuan Ethercat Nema23 closed loop stepper motor with driver CL3-E57H
where can i find its XML configuration ?