Re: I made it go! (Newb questions)

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "ghidera2000"
<ghidera2000@y...> wrote:

> I finally got around to actually setting up a stepper motor and
> making it go. It actually goes - you wouldn't believe how amazed I
> am :D
>
> I am facing a problem thats probably pretty common. The datasheets
> for my ST35 motor don't mention wire colour codes or step sequence.
>
> http://www.mingjong.com.tw/product_e.htm
>
> I know I saw a web page that described how to determine the wiring
> and step sequence for any unipolar motor - now I can't find it. I
> did find one that partially explains it at:
>
> http://redbaron.bishops.ntc.nf.ca/intsys1215/vbreferences/vb-
> webpage/stepper.htm
>
> So I know which ones are center taps and can group two sets of

three

> wires - but I don't know which ones are for coil 1, 2 etc.
>
> I've been fumbling with different step sequences and mixing and
> matching the wires (seems to work almost no matter what I do!). How
> can I determine the proper step sequence etc?
>
> P.S. I did email the manufacturer but I'm not holding my breath on
> that...

First off, CONGRATULATIONS ! and welcome to the club !

It is an awesome thing just to hear the motor move and to watch it
take baby steps.

Enjoy the moment and the fact that you are one in a million that got
that far!


regarding your wiring, if it spins in the direction you have no
problems. if it spins in reverse from the way you expect, your
choices are to change the output on the direction pin. most software
will let you chose HI or LOW to go clockwise you you don't have to
move wires.

but, it you want to change direction, all you need to do is to swap 2
wires. leave one coil alone and just change one coil.

very easy.

Dave