So I’m converting my K40 over to the Smoothie board [ yes, still, it’s slow progress ] and am wondering if anyone has any info on the stepper motor 17HW3448N-15AD. Could do with a pin out so I know which cable goes where. Has anybody done any work in this area?
Wlel, I changed my motors because the stock ones are unknown on the web.
Wiring is easy, just follow this tutorial (Trial & error is risk free so go for it, probably the easiest way) : http://reprap.org/wiki/Stepper_wiring#Methods_and_procedures
Can’t find anything on that motor apart from other people looking for a datasheet 
Don’t think you need it. Just take the motor and conect it. Be sure not to over current it. Start low and adjust
@Darren_Steele @Gary_McKinnon someone at the cnczone forum found some info; http://www.cnczone.com/forums/general-laser-engraving-cutting-machine-discussion/300948-finally-found-info-stepper-motors-cheap-k40.html
if it work with your PSU ( & stock Board), it will work with Smoothie too. just find out the pair(S) by trying to turn the shaft manually when motor disconnected, 2 cable shorted, if motor blocked, you have a pair (so the other 2 should do the same). So now you have a+a-b+b-, a or b doesn’t matter as you can change rotation in the config file.
@Jean-Baptiste_Passan what steppers did you chose? Have a link?
I would not know why would you need to change the motors?
For 12v 
@Mircea_Russu Not really, it’s more because I want to know what I work with than for specifications. It’s like a car, you can drive it without even knowing what kind of motor you have, but when doing maintenance it’s better to know it.
The motor I used are this ones : http://www.aliexpress.com/item/5pcs-4-lead-Nema17-Stepper-Motor-42-motor-Nema-17-motor-42BYGH-1-7A-17HS4401-motor/1500927219.html?aff_platform=aaf&sk=Ee2JQzjUz:&cpt=1467751140918&af=24106_aliextension&cn=1&cv=2&dp=6-67-d222ba11-18f8-4e4b-a6c7-92942a773b77&afref&spm=2114.30010308.3.10.QLjep1&aff_trace_key=e2846ee2a56c49859337f62054a4e047-1467751140918-09670-Ee2JQzjUz
Datasheet is available here : http://www.svaltera.ua/catalogs/knowledge-base/brands/motionking/HB_Stepper_Motor_E.pdf
@Ariel_Yahni_UniKpty See my answer to Mircea
Thank you @Jean-Baptiste_Passan how about the y stepper? These seem to have only one axle. Did you go double stepper for y?
@Mircea_Russu Sorry, forgot about that, I used 17HS8401 for this.
Exactly the same as 17HS4401 but with two shaft.
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Thanks for everybody’s help so far. Quick update. I got the y-controller hooked up to the smoothie board using the same pinout. I can now connect to the web interface and manually move the head. The x-stepper was connected with a ribbon so I’m in the process of taking the ribbon connector out and splicing some controller wires from the smoothie board. So tempted to just solder/shrink wrap the wires for testing and then dropping a connector block in…but that would be hacking. So I’m going to get a connector block sorted out and do the job properly!
Didn’t get a connector block…I hacked it I’m now trying to convince LaserWeb3 to communicate vie ethernet.
@Darren_Steele you should be able to jog with no issues via ethernet on LW
@Jean-Baptiste_Passan I’ve been searching the web for 17HS8401 but it’s single shafted just like the 17HS4401 with larger torquw. Could you please take a picture of your dual shafted Y stepper model? Thank you!