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Changing E-Steps on Chitu

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Hi, im running the stock board right now and ive upgraded to a BMG clone, ive been loking around on how i can change de E-steps.
So through cura i send the comands.
-1rst thing ive done is send G1 E100 F100 so it extrudes 100mm
-Im getting a value of 93mm
I dont think the comand values i send in are working correctly because ive changed this value several times (M8011 S) and saving with M8500 and the measurement on extrusion is the same.
Did manage to change the extruding direction.
Any help? is there anything im not doing?

The Chitu g-code for the extruder is in millimeters per step, NOT steps per millimeter.

The default value for the stock geared extruder is M8011 S0.002560, or 390.625 steps per millimeter. A more correct value seems to be somewhere around M8011 S0.002430, or around 411 steps per millmeter. Just divide 1 by the steps per millimeter you think you want.
Don't forget M8500 to save the change.

To be more precise, you are currently getting 93mm when you ask for 100mm, or 0.93 of what you want. 1/0.93=1.075. 1/0.00256=390.625 steps per mm. 390.625*1.075=about 420 steps per mm. 1/420= about 0.00238. So M8011 S0.002380 should get you pretty close.

Thanks :) I managed to adjust the extruded value. But i dont know how ive changed the distance the other moptors moove when y tell them to moove 10 mm they moove much more, confusing the printer and mooving over the limits sometimes. you know what could have happened?

okey i found out that M8009 S helps with that

Yes, for a stock Predator the x and y axis would be M8009 S0.012500, and the z axis would be M8010 S0.012500