Stepper motor driver/controller with USB

Oct 20, 2003 5 Replies

Hello, I am a student industrial engineer. For my graduating project I have a mini CNC Mill Machine, driven by 3 stepper motors (xyz). But the drives/controller + software are gone. So it is my job to make this machine working again, so that other students can use it again. I'm looking for a stepper motor drive and controller for these 3 motors that connects with PC by USB and which I can integrate with my program (I'm gonna use common languages (visual, c++, (labview?)... for the program). Here is some information about the motors: Japan servo KP6P8 Stepper Motor (unipolar) 4phase 7.5 deg/step 12V 0.33Amp/phase 36 Ohm/phase holding torque 800 gf.cm detent torque 160 gf.cm rotor inertia 23,7 g.cm². Can anyone help me a bit further please. Many thanks, Rik snipped-for-privacy@skynet.be


If it isn't obvious how can you possibly graduate?

If I tell you how to do it can I graduate to? Mother would be so proud :o)

best regards

Robin G Hewitt CMIT

Take a look at the Gecko G2002...

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John Kasunich

Yuk! Yuk! Yuk! Duhhh... ;-)

Only 300ma per phase? Those are some teeny tiny little motors. Probably slow too.

You say you are an industrial engineer? Do it the IE way: spec, buy, test, use.

3-axis 2.5amp microstepping driver: $125 at
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software: Free (or $20 if you want the source) at
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Uses the parallel port, which actually can be pretty fast (much faster than you'll get out of those steppers).

Tada. Passing grade. Happy graduation.

I actually just finished cutting a part on my homebuilt minimill, using the above solution.

Geckodrives is coming out with a low cost solution. Checkout the G2000 at

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