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bdring / Grbl_Esp32

A port of Grbl CNC Firmware for ESP32
GNU General Public License v3.0
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JMC IHSV57 step per mm #885

Closed qiwalker closed 3 years ago

qiwalker commented 3 years ago

Hi

I use JMC step servo with 800 pulse per rev How to setting step per mm and also suitable pulse

Thanks

bdring commented 3 years ago

There is information on the step and direction pulse options here.

https://github.com/bdring/Grbl_Esp32/wiki/External-Stepper-Drivers

There is a basic setting for steps/mm $/StepsPerMm=

https://github.com/bdring/Grbl_Esp32/wiki/Settings#xstepspermm-thru-cstepspermm-or-100-thru-105--xyzabc-stepsmm

The wiki has all the information you asked for.

https://github.com/bdring/Grbl_Esp32/wiki

qiwalker commented 3 years ago

Thankyou so much But in this motor i cant found microstepping only table of pulse per rev

bdring commented 3 years ago

That generally assumes 200 full steps per rev, so 800 would be 4x micro stepping.

qiwalker commented 3 years ago

Thanks for ur explanation Change the step per mm value make DRO show wrong value, Ie : jog machine 1mm then the DRO display is 0.999

Anyway how to set machine to zero after homing ?

bdring commented 3 years ago

The machine moves in steps. It might not end up exactly where you want, but 0.001mm is really, really close.

It is better for the machine to say exactly where it is.

You can zero anywhere you want.

https://www.youtube.com/watch?v=fGtbkVJBXyE

Most senders have button to zero the axes as well.