Reply To: Tin's 1100x900mm Build

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Martin S

I’ve read somewhere in the forum, that to calculate the current limit to each stepper, I need to calculate the amps when fed 12v.

I hate the electronics part, and I think I’m a bit confused.
Please correct me if this is wrong.

For the X and Y I’m using 42BYGHW804 nema 17.

1.2A x 3.6V = 4.32W
4.32W / 12V = 0.36A
For two steppers 0.36A x 2 = 0.72A

So with the DRV8825:
1000mA —-> 500mV
720mA —–> x

I need to set the driver to 360mV.
Is this ok?