I need a motor that can be accurate within 1° and has an rpm of about 60-120. The 28byj-48 works really well but at a only 15-30 rpm it is very slow. I need something that can start and stop in near exact 90° rotations while also being continuous motion unlike most servo motors. If you guys have any ideas please let me know.
90° is big enough to 2° accuracy so NEMA17 is passing
? NEMA17 uses M3 screws for tightening. NEMA23 uses M4. What has that to do with stepping angle?
Have You never heard about microstepping*
RPM spec for a servo? Look for the time moving from this pos to that pos.
The 28byj-48 has a gearbox, and is therefore slow.
Common steppers have 200 steps per revolution, so 90° is exactly 50 full steps.
If you want a ≤ 1° step, then you must use micro stepping.
For drivers and micro steps look at this page.
Leo..
I realized that the 1° doesn't matter I just needed the motor to be within 1° of 90°. But since the motor has 200 steps it lines up perfectly and it's no issue. I'm looking at some Nema 17 motors and I think the 17HS19-2004s1 will work well.
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