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 Some verification on Stepper Driver please 
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Joined: Fri Mar 12, 2010 12:16 pm
Posts: 370
Location: Gloucester UK
Post Some verification on Stepper Driver please
I've acquired a boxful (10) of these nema 23 stepper motors http://uk.rs-online.com/web/search/sear ... &R=0440458 and the same number of 60 and 120 : 1 Ondrive low backlash right angle gearboxes so I'm thinking about having a play with the arduino and some stepper drivers. Is the Easydriver v4 the simple choice to control these steppers for basic move stop move use or should I be buying a more expensive driver with better and more flexible control that I'm unaware of?

The steppers have a dual shaft output so I'm likely to put an encoder on the open end for more precise control or at least confirmation the stepper hasn't missed any steps

regards
Kev

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Thu Jun 17, 2010 2:35 pm
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Post Re: Some verification on Stepper Driver please
At 600mA, it doesn't specify bi-polar series or parallel - if that's the parallel rating, you should be good. If it's series, you might run into flexibility issues w/ the ED. Parallel wiring requires 2x the current of series (b/c two coils are activated at the same time). Parallel gives better torque at higher speeds, serial vice-versa. (Thus, serial is likely to be a good option =)

Namely, the ED can supply up to 750mA of current.

The ED _should_ work just fine for you needs. If you want to get a little more headroom in current draw, at around the same price range, check out the Pololu A4983, or its bigger brother (only difference is the A4983 doesn't have a voltage regulator, so you have to supply +5V to run the logic on it), which have a 2A/coil rating.

You don't need a big expensive driver for those little motors =) You're neither going to running at massively fast speeds (hopefully!) nor running huge current or very high voltage. Save your money for better drive components!

!c


Thu Jun 17, 2010 4:02 pm
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Joined: Fri Mar 12, 2010 12:16 pm
Posts: 370
Location: Gloucester UK
Post Re: Some verification on Stepper Driver please
Thanks for the reply Church, I only want to get the basics sorted out in my head etc before taking a bigger leap lol

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Thu Jun 17, 2010 10:57 pm
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