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Well I looked in every single box.. nothing. bah!

Good catch. I ran the test again, and noticed that HalScope does not update the picture except after every scan - that was probably the problem. I also made all the pictures at 100 ms per division. Here are the revised photos. I also made a zoomed in photo of when the movement starts, so I could read off the delay.I'm not sure if that has any significance.

100 RPM - 30ms from falling index to start of Z movement
 

200 RPM - 17ms from falling index to start of Z movement

thx i will try it

This is an open source project "electronic gears". Very popular among home craftsmen in the territory of the former USSR. The main functionality is to replace the mechanical gears of the guitar machine with an electronic drive. The first versions automated the operation of only the longitudinal feed. The current version 7.2 allows you to automate the operation of the transverse feed. Such operations as thread cutting, cone, sphere - do not require manual dexterity.
Naturally, the Chinese brazenly put it on the WEISS EL250 machine, passing it off as their own development. All comments on YouTube are banned )
The project address is www.chipmaker.ru/topic/118083/ Author - Oleg from Riga.
Initially, I used LPT control based on 2.7 for CNC and ELS for manual work. The BOB25 board is perfect for this. It is enough to pull out one cable and put another.
Using NativeCAM allows you to no longer switch cables. And use one system for convenient control of the machine. Here is an example (video is not mine)

1. Note that the compiled installation is separate from the package installation you worked with before so you need to modify '~/linuxcnc-source-dir/src/emc/kinematics/trtfuncs.c'

2. then cd to ~/linuxcnc-source-dir/src and run
3. if that was successful you can start the compiled installation:

conversational is useful for small quick jobs, but most parts will use cad/cam software to develop tool paths and part programs to be loaded in the PB control to be run.

conversational requires you to setup the tools to be used in the tool table and save and reload the table. then in the conversational, determine which parameters to enter in the required fields to accomplish your desired motion and enter them in the appropriate boxes. then set the work coordinate offset so that the motion is adequately inside the cmachines configured work envelope. it seems you have a long road ahead of you, but your install is now functioning correctly, so once you develop the correct cnc machine knowledge you should be able to accomplish your goals!

Good luck with your Journey!

I've had good luck getting everything to run well enough to get deep into learning and configuring LinuxCNC, Mesa 7i95T and the needed .ini and HAL files.  However, I just ran into my first problem when LinuxCNC errors on start when I configure QtDragon as the interfaces. 

I've already worked my way through several prior fail-on-start situations chasing down reported errors from the usual sources but this one is stumping me because I can't seem to find the actual error in the outputs I'm aware of.I will attach everything I can think of if someone could take a peak and spot what I'm missing.

Thanks

Due to job change, I have to sell my almost new LinuxCNC:

Precision Matthew PM-25
Mesa 7i96
DM856 and 2x DM860 drivers
KH34 and 2x KH23 step motors 

the machine is located in Providence, RI which is about one hour driving distance from Boston.

Please private message me for the price. 

I think now it's success compile.
 

then I cmd : sudo make setuid

I try open sim xyzbc-trt-kins
I'm open hallshow and click to check inside pin--> xyzbc-trt-kins   but not have show pin skew-y
have any step ?
 

Thank you,
Asis

Looking at your pictures again, and they don't make sense...

The time between index pulses is ~1.2 seconds in both pictures = ~50 RPM

100 RPM would be 0.6 seconds per index, 200 would be 0.3
 

Standard 7I96S firmware has 4 built in MPG quadrature counters
overlaid on the first 8 isolated inputs. This means you do not need
to decode individual inputs (which is important since they are typically
only read at the 1 KHz servo thread rate)

The MPG counters have names like:

hm2_7i96s.0.inm.00.enc0-count
hm2_7i96s.0.inm.00.enc1-count
hm2_7i96s.0.inm.00.enc2-count
hm2_7i96s.0.inm.00.enc3-count

Thanks, I don't know if I did it right but I got an error message.

Removed setp from HAL file and retested. No change in observed behavior.

Yes, multiple passes at same speed are perfectly aligned with previous passes. This is true even when machine is turned off overnight and turned on next day (and re-homed). I don't think I'm losing pulses in the stepper motor. You can usually hear the motor miss pulses, and the results are reproducible.

10 count per turn encoder results in delta Y per pulse of 0.0125" for 8 TPI. Seems like the error would be less that that, and I'm seeing 0.085" error at 200 RPM.

you need to install the build dependencies. See 4.2.2 in the linked documentation above.

Or you open "/usr/lib/python3/dist-packages/probe_basic/probe_basic.ui"
and change line 365:
<number>8</number> to <number>0</number>
Number "0" is first tab (main).