First time linux cnc user - no stepper movement.

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05 Sep 2024 16:26 - 05 Sep 2024 16:36 #309430 by crazycajun
I cam from a "working" mach3/uc100 setup over to a 7i96s setup. K4030 drivers. terminal pings the mesa board. I have dir +/- and step +/- wired to the k4030 and 7i96s. a cell phone charger to power the 5v of the 7i96s.
steppers dont move. i have no limit switches hooked up yet and i configured the settings to not need to home first.
i tried connecting the 24/36v psu ground to com on the 7i96s, i tried connecting the 7i96s 5v to the dir + & step + (which is how mach3 was configured; and the dir/step - was 2 pins on the serial board).
when i connected 5v to dir/step +, and started linuxcnc, i did get "unexpected real time delay on task0 with period 1000000"

what do i have wrong?

once i get this figured out im going to make a video on all of this to help me next time and others. i have been on the struggle bus thus far.

side note, with just the 5v input and dir/step +/- hooked up, i get 5.09v between gnd & 5v, i get 5.09v between step + & gnd, i get .23v between dir - & gnd, and dir + to gnd i get 4.81v. on unused step/dir ports its the same except i dont get the .23v reading, its 0 instead.
 
Last edit: 05 Sep 2024 16:36 by crazycajun. Reason: added voltage readings.

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05 Sep 2024 16:44 #309433 by PCW
Most common issue with no motion is too short step times
I would set the step length to say 5000 and try again

 

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05 Sep 2024 16:44 #309434 by crazycajun
Replied by crazycajun on topic First time linux cnc user - no stepper movement.
also, i am on kernel 6.1.0-7-rt-amd64 with an inspiron 545s

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05 Sep 2024 16:46 #309435 by crazycajun
Replied by crazycajun on topic First time linux cnc user - no stepper movement.

Most common issue with no motion is too short step times
I would set the step length to say 5000 and try again


i set the step to 32000 like i had it in mach3. is that too short?
 

 

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05 Sep 2024 16:55 #309436 by crazycajun
Replied by crazycajun on topic First time linux cnc user - no stepper movement.
i set the calculated steps from 32000 to 5000, no change in operation.

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05 Sep 2024 18:10 #309442 by PCW
Not calculated steps, but the steplength parameter

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05 Sep 2024 18:18 #309444 by crazycajun
Replied by crazycajun on topic First time linux cnc user - no stepper movement.
thats the one with the drop down box for different drivers correct? if so i selected the k 4030

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05 Sep 2024 18:43 #309445 by PCW
The critical one would be the "Step-On time" parameter

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05 Sep 2024 19:16 - 05 Sep 2024 19:28 #309456 by crazycajun
Replied by crazycajun on topic First time linux cnc user - no stepper movement.
 
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Last edit: 05 Sep 2024 19:28 by crazycajun.

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05 Sep 2024 19:47 #309460 by crazycajun
Replied by crazycajun on topic First time linux cnc user - no stepper movement.
is it possible that the cell phone adapter power is the issue? i have a L7805CV L7805 Positive Voltage Regulator Output 5v TO-220, can i use one to power the mesa?

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