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I have an application that calls for controlling two stepper motors. One motor does a constant speed scan, while the other would kick in at certain scanning positions of the first motor.

Can this be done with only one motor shield? The motors are relatively large, running on 12V. Thank you!

closed as unclear what you're asking by Chris Stratton, Paul, RSM, Nick Gammon Jun 4 '16 at 5:47

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    Typically you need a dual H bridge per motor, so for most boards you can run only one stepper. "Large" motors may need a more capable driver - you need to specify your current requirement or DC winding resistance. – Chris Stratton Apr 11 '16 at 5:54
  • Voting to close - it's been a month and the requirement has not been clarified to make this question answerable. – Chris Stratton May 12 '16 at 15:01
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There are motor shields that allow for running two stepper motors, like this one http://www.aliexpress.com/item/L293D-Motor-Drive-Shield-dual-for-arduino-Duemilanove-Motor-drive-expansion-board/32341780904.html?spm=2114.01010208.3.1.PA9IVu&ws_ab_test=searchweb201556_9,searchweb201602_2_10017_10005_10006_10034_10021_507_10022_508_10020_10018_10019,searchweb201603_9&btsid=9d220772-7d0a-437d-8534-651a85644de4

Or there are boards that are smaller than a shield that you could use, like these: http://www.aliexpress.com/item/28YBJ-48-DC-5V-Five-line-4-phases-Stepping-motor-Deceleration-stepper-motor-Fuses-length-25CM/818857514.html?spm=2114.01010208.3.1.LZ80QW&ws_ab_test=searchweb201556_9,searchweb201602_2_10017_10005_10006_10034_10021_507_10022_508_10020_10018_10019,searchweb201603_9&btsid=201933bf-6385-4a45-a3c2-01236c01cd7a

But you will need to look at the specs to make sure they fit your needs, the best way to do that it to look at the main chip that is driving the motor and look at what that can do.

Hope that helps.

  • The L293D based device in the first link is almost certainly a poor choice for any "large" motor... though of course "large" has not been defined by the poster. – Chris Stratton Apr 11 '16 at 19:58

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