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Author Topic: Help ! "Radial Cut with Zdepth" toolpath from mastercam makes Skip steps ??  (Read 25220 times)

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Hood,
thank you very much for your help and support, I appriciate that.

I will do the kernel to 25 like I used to be.

Cal

Offline stirling

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I'd just add that you have your Y and Z step signals set active high. This is wrong for geckodrives which all step on the falling edge. There is also no need to set pulse widths to 5. The default of 0 is correct for geckos. (actually these values are ADDITIONS to the default pulse widths which are around 1 to 2 us so you actually have pulse widths of around 6 to 7 us. This in conjunction with your 100KHz kernel (10us period) is not doing the geckos any favours.

Ian
Ian,
noted.

thanks, will check an try that

Cal
ok guys,
bad news. I have the problem show up again.
losing steps.... not on Z. never lose on Z.


I'm stuck, I have no problem cutting straight pocket or anything that straight on X or Y.
but the problem sometime appear on radial cutting, specially with Z depth Radial cutting.
never lose on the exact spot !

help ...

Offline Hood

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Did you check the voltage is steady on your power supply when moving all axis together?
Hood
omg forgot to check that, that will takes time to open the controller casing.

I have not got time to open the controller box yet to check the voltage.
what happened if the voltage drop ?
what's the tolerance ?

just to make sure, to check is the voltage/PSU that goes to the Gecko controller right ?

Offline Hood

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Ideally you dont want to see the voltage dip at all but  maybe a few volts would be fine if its dipping by quite a bit then that could well be your problem.
Yes the DC output of the power supply is what you want to measure.
Hood
 Hood,
I just check the voltage.
I use 65 DC Volt on my Gecko drive.
and it very stable when the axis move only drp to 64.7 or around that much on X Y and Z drives.

Offline Hood

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Obviously that is ok, so dont know what else to suggest I am afraid.
Hood