Hi, I want to build a high accuracy pan tilt turret The thing is I want it to be very accurate and usable at longer ranges 0.1 miliradian (~ 0.4 MOA for those not familiar with metric units) accuracy is expected - obviously the less the better. Speed isn't really an issue - if it can do 0.5 RPM max it's ok
Mechanicly it will look something like this :
I got two options: A)the 28BYJ-48 motor with an inbuilt gearbox (5.625 deg/48 = ~0.087deg per step) - not ideal but could be further geared down with a belt gear and it has got plenty of torque
B)typical 200steps per rev step motor but microstepped to 1/64 or 1/128
What would be better in your opinion ?? Is it even possible to microstep the 28BYJ-48 motor? How accurate are microstepped motors ?