Homebrew PCBs

> 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