RE: [CAD_CAM_EDM_DRO] OOPS! Need bigger steppers

I am suggesting that you power the boards (motor side, not logic side) with
as high a voltage as you can, but use 2 - 4 v motors. 12 v motors will have
a high inductance and give you a low maximum speed.

You will not burn out the motors as the L297-L298 combo is a current
limiting chopper driver setup. You will want to use as high a voltage as
practical.

Tim
[Denver, CO]

> Thanks for all the help guys. Tim, if I understand you
> correctly, you
> are suggesting I power the boards and motors with 12VDC and
> use motors
> in the 2-4 VDC/2 Amp range, correct? I was most concerned with
> burning out the motors with the higher voltage, but this
> sounds like a
> viable combination. I am going to use a 5/10-1 dual ratio
> timing belt
> drive on each axis with half/full stepping so I can select
> power/accuracy or speed depending on the application (engraving vs.
> milling, etc.). I have several sources of motors in the 2-4 Volt/2
> Amp range. I'll let you all know how it works out. Thanks again for
> the help.

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