Re: LV8729 and OnStep

Gilberto Nunes

Just as an update of thie thread, I have found this other thread in other forum site, for our reference:
There they said the formula for black driver.
Now I am nust than lost inf the dark here!
I hope someone can clarify me! Thanks! Regards

Gilberto Nunes Ferreira



Em sáb., 23 de mai. de 2020 às 11:59, Gilberto Nunes via <> escreveu:

Hi there
I about to change the driver step from DRV8825 to LV8729.
What kind of changes to I need to do in that spreadsheet in order to makethis driver work properly?
Currently I am using:
Do I need to change microsteps to 128 both in spreadsheat and in the config.h?
Other question is about the Vref.
I saw an old thread from Khalid(*), that the LV8729 there's two version: one with R100 and one with R220. Mine is R220, v1.0 and FYS write in the back of the driver.
My motors is a nema 17 4kgf 17hs4401. So apparently the rated current is 1.7.
That make wonder if the formula bellow is ok:
Vref = 1.7 * 1.1
Vref = 1.87
I hope I can learn more about this things ith you guys...
Thanks a lot
Gilberto Nunes Ferreira



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