Re: New Project

Generally speaking there are 2 types of steppers, and there is some correlation between some of the characteristics on the labels. For example for higher voltage motors, like 12v or higher, its very likely that they are higher voltage labeled coz they also have high coil resistance. And because its same form-factor (nema number is the size of the motor), so in same space, high coil resistance means thinner wire with more turns, so this situation more or less it ends up in being more inductance. And vice-versa.

Its not always good to generalize things and it can even be dangerous sometimes. But as for me being a generalizing twat we will say types are more or less something like this (values given for exemplification, not classification of sorts) :

1) higher voltage (12+ volts), low current (0.5a or less), higher coil resistance (6-12ohms and higher) , higher impedance;
This type 1) is really not that good of a match neither for reprap drivers nor the 12v psu. These are probably best run with much higher voltage than 12v. Its not to be said these steppers wont rotate with our drivers and 12v, they will rotate, but probably have power lower than rated and somewhat poor performance, even worse at speeds.

2) low voltage (3-4 volts and lower), higher current (1.2a and higher), low coil resistance (3-4 ohms or lower, ideally aiming at ~1-1.5ohms), and low impedance;
This type 2) is best match for reprap usual drivers with 12v psu.