Re: [CAD_CAM_EDM_DRO] Re: Getting 4.2V from a 5V PSU for a Stepper Motor Driver Board

> Honestly, if you are doing this as a learning experience it will teach
> you a lot (and you will spend a lot of time doing it) and you will
> also see why that chip set is no longer used in most designs. If cost
> is your driver you need to look at the Xylotex new unipolar
> microstepping chopper kit. For less than 90 bucks you can drive 4
> (~20 bucks per axis) of the 3A motors at 40V directly from your
> parallel port.

Thanks for the excellent reply!
I feel I need to read up a little more on stepper motors!

I prefer to design and build my own kits rather than simply buy them.
Okay mainly from the manufactuers data sheet example circuits but that's
just my way of doing things.
The L297/8 seemed a nice pair and easilly available here in the UK (if a
little pricey).

I still have more to learn (and even more to remember from my Uni
Microelectonics days) and I appriciate the words of the experts.


Cheers

Kev/.