Can anyone find a spec for this stepper motor ?

I have a couple of Mitsumi M42SP-4NP stepping motors, but annot find out much about them. The devices they came from were powered by 24v.

It looks very similar to this : http://www.shcyc.com/images/pdf/M42SP-4,-4NK.pdf It has 4 wires. Black, Brown, Yellow, Red.

Any poiters on how to hook it up to an Arduino ?

Thanks

http://www.reuk.co.uk/Examining-a-Stepper-Motor.htm

Mattt,

I did a project connecting Arduino and a Bipolar Stepper Motor. I used 12 arduino pins to make it work. But it’s possible with less.
There is a poor video arduino tutorial: HackLab Arduino - Motor de Passo de Boi Bumbá

And I posted the code here:
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1192185109/4#4

Your motor seems to be the same kind, bipolar (4wires).

Mrmeval link is for unipolar stepper.

Bipolar and Unipolar are very different.http://www.cs.uiowa.edu/~jones/step/types.html

Mine was removed from Epson Inkjet Printer, and works with 48 volts. Since I was just testing functionality, all I did was connecting arduino pinout to controller IC, not changing printer boards.
The IC was LB1847:LB1847 Datasheet pdf - LB1847-D.PDF - ON Semiconductor

I don’t know if you can use this one, but datasheet has many useful information. I used it’s table to write the code.

If you’ve removed your motor from printer/fax/other equipment, you can find all you need equipment. If you don’t have any equipment that uses this motor, try finding some canon printer schematics: I know this motor is used on some of themhttp://www.smcelectronics.com/printrep.htm. So you can find the IC controller used by canon. If you know the IC, IC datasheet can show you more.

Read this too:
http://en.wikibooks.org/wiki/Practical_Electronics/Stepper_Motors
http://www.cs.uiowa.edu/~jones/step/circuits.html
http://www.arduino.cc/en/Tutorial/StepperBipolar
http://www.arduino.cc/en/Reference/Libraries

I’ll try to draw schematics of my project later.

Good Luck.