The Best Steppers/Servos Setup Thread

[Zeeflyboy]

Yes, looks to be the same as what I'm using.

They are nice, work great for me... but then I've never used servos so can't comment on that front. Even if you just view them as normal steppers they are a good (if not the cheapest) option in my opinion, they are quite literally plug and play with no tuning required at all and are very quiet, smooth at all speeds, stay very cool in operation and have the must-have features such as stall detection and error signal.

It was quite fun playing around with the closed loop system before installing them. You can fit a coupling to the shaft and then try to prevent it from rotating as an experiment. Long before it will throw a fault and disable the drive, you can see a sort of rubber band effect.... where a normal stepper would have thrown steps, these keep trying to fight you and then just ping back into place once you release them.

In theory the closed loop stuff also has better torque curves, acceleration and speed due to the controller having a better idea of what position the motor is actually in, along with higher efficiency and lower noise.

Edit:

Quite an interesting read on closed vs open loop steppers where they've actually done some lab testing http://www.motioncontroltips.com/tor...epper-systems/