remember to set current limit!

typical values for DRV8825 @12V are:
- POT MIN (CCW) 0,002V -> 0,040A current limit per phase
- POT MAX (CW) 0,800V -> 1,6A current limit per phase

to use it with micro motor such as:
https://it.aliexpress.com/item/1005001411528049.html?spm=a2g0o.productlist.0.0.7586446c1fqnje&algo_pvid=d3933bb1-c9d8-4d56-ac01-0aac944dd2ac&algo_expid=d3933bb1-c9d8-4d56-ac01-0aac944dd2ac-0&btsid=2100bdcf16113966837531656e98b6&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_
use DRV8825 provide 8V and SET current to 0,080V -> 0,160mA, steps are 20/360°



