Homebrew PCBs

(what stands NEMA for?)

National Electrical Manufacturers Association


> Can these motors drive the threaded rods direct?

YES



The nice thing about having a standard for motors, NEMA23 or 
otherwise is that you can get a larger, more powerful motor and it 
will fit in directly.

as a kinda-sorta general rule of thumb, a round body NEMA23 motor 
that is roughly 2.3 inches long is a SINGLE STACK  and has about 50-
oz in toruque.

a unit that is about 5 inches long and round body is about 100 in-oz 
torque.

The newer motors have a more square body, not round and are often 
much higher tourque.


And look on the net for drivers.

the linistepper seems a board that fits our group nicely.
also, check the Allegro A3977 chip.  very simple.

Dave