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Tuesday, January 24, 2006

Steppers for Africa!

I took delivery on the steppers in one day. I wasn't expecting them till maybe Friday so it came as quite a shock to me when the UPS man pitched up a few minutes ago.

I'll be transhipping part of the order to Vik and Simon as soon as I get the address for Vik's US maildrop.

Here is a closeup with a rule so that you can get the scale of them. They're NEMA 17's and can be found on Lin Engineering's web catalog at...

http://www.linengineering.com//site/products/4118.html

They're 4118S's and weigh in at 0.4 lbs (182 g) each. They draw 2.5 amps at 24 volts and put out 45 oz-in's (3240 g-cm). For Simon, they've got four leads. I hope they do the job.

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2 comments:

  1. Zach SmithJanuary 27, 2006 4:24 AM

    coool!

    those look so sweet!

    i cant wait to see how you guys put them to use.

    can i be the first reprap fanboy?

    ~Zach

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  2. Forrest HiggsJanuary 27, 2006 4:04 PM

    They are certainly pretty and very nice to handle and look at. I think, however, that steppers are going to be nothing more than a stage on the journey. The DC gear motor plus encoder scheme that Adrian just built and blogged is where things are going to go, I suspect. You can reprap 98% of one and the motor itself costs about a dollar. They'll also consume hardly any electricity at all compared to what you need to keep a stepper going.

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