I want to control 25 stepper motors with arduino. Steppers are super small like those:
I've seen that it is possible to control small steppers without additional driver:
My goal is just to move it to one end or the other, no microstepping, just simple movement to the beginning or the end.
I know that i need external power with so many steppers, but i wo not know how to multiplex the signal somehow. I've seen 16-channel PWM for servos like this one:
But im not sure if i can use it somehow for such simple stepper?
So the question is how can i do it cheap? Stepper drivers would be to expensive at the scale (stepper is about 0.05-0.1$ each so something in similar price range for controlling each of it should be appropriate)
I need some direction what should i research, because at this moment I'm a little bit stucked:)
Thank you in advance for any help:)