it is pure phase step mode
a a- b b-
0 0 0 1
0 0 1 0
0 1 0 0
1 0 0 0
full step mode
i think you could put a l297 translator in front for step/dir and
full/half step mode
http://www.allelectronics.com/spec/L297.pdfgr. Roel
--- In
Homebrew_PCBs@yahoogroups.com, Stefan Trethan
<stefan_trethan@g...> wrote:
>
> > And look on the net for drivers.
> >
> > the linistepper seems a board that fits our group nicely.
> > also, check the Allegro A3977 chip. very simple.
> >
> > Dave
> >
>
> I will not buy a kit/module for stepper control!
>
> But i would have these four STK6982 Drivers...
> They must be suited to drive these motors (they did it before).
> Unfortunately they are a bit old... and the only datasheet i get is
> japanese...
>
> They have current limit, and high drive voltage.
>
> I just found the second pritner control board..
> on this board the 2 drivers are still in place (i took parts from
the
> other).
>
> the rest of the circuit is intact..
>
> i hope to be able with the pictures in the japanese datasheet and
this pcb
> to find out more...
> i have a pinout too...
>
> But i have still no idea if they are chopper mode, or not..
> (there are strange pictures in the datasheet...)
>
> If you want to take a look...
> http://service.semic.sanyo.co.jp/semi/dis_pdf_j/STK6982.pdf
>
> prepare your japanese reading ;-)
>
>
> I read the jones document again, decided microstepping is not
needed now...
>
> but high voltage drive is needed, thus current limit required.
> I don't insist on chopper....
>
>
> stefan