Calibrating steps/mm

[dc42]

If the T values are too small then you can miss steps.

[nz_andy]

What is the external drive micro step set at? you have 10,000 miro-steps per revolution listed in you post, so micro step setting is 50?

[Jddt]

[nz_andy]

Have you tried using 1/16 micro-stepping instead of 1/50th? if that works that may tell you there is an issue with the signal frequency / pulse width.

[deckingman]

@nz_andy said in Calibrating steps/mm:

What is the external drive micro step set at? you have 10,000 miro-steps per revolution listed in you post, so micro step setting is 50?

Good spot. That could well be the OP's problem as 50x micro stepping isn't a supported mode - see documentation here https://duet3d.dozuki.com/Wiki/GCode#Section_M350_Set_microstepping_mode.

[Jddt]

Thanks for noticing the error in my calculation. I am using external drivers and are not using the M350 command.

[Jddt]

@jddt Changed to 128 Micro Steps

[Jddt]

What is the max T values you suggest to be safe?

[dc42]

@jddt said in Calibrating steps/mm:

What is the max T values you suggest to be safe?

High T values will limit the maximum step pulse frequency. I doubt that any stepper drivers need greater than T10.

[Jddt]

The motors started to work properly with a value of T5

[dc42]

According to the datasheet, T2.5:2.5:5:0 should work.