Re: [CAD_CAM_EDM_DRO] SUGGESTION ABOUT NEW 3 AXIS DRIVER

luisguillermo98 wrote:

>I need to know if aomeone has try the the 3 axis driver found at
>http://www.brewingtontech.com/index.html..
>
>tell me about your experience working with it and if it works fine
>like geckodrivers.. any suggestions..
>
>

I can already tell you, it is nowhere as sophisticated as a Gecko stepper
drive. It is 3 Amps, only. It can only handle 46 V DC supply, the Gecko
can handle 80 V. For very small motors, that doesn't matter, but for larger
motors, it is a problem. Their higher inductance requires move voltage
to move at the higher speeds. I get good torque at 1440 RPM with size
34 motors, which is astounding. The Gecko drives also do x 10
microstepping,
and have circuits to damp resonance. These Brewington drives are
half-step only. I see no indication that it has opto-isolation between the
drive and the parallel port. They are Unipolar, which is another severe
strike against them, as most unipolar drives perform poorly when compared
to bipolar. They say they can accept 10,000 steps/second, but in practice
I doubt they can get anywhere near this before the motors lose steps.

And, that's just a start!

Jon