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H bridge 2 parallel motors

Posted by chik

chik

H bridge 2 parallel motors
October 11, 2013 04:40AM

Registered: 13 years ago
Posts: 46

Hi, everybody,

I want to add a second motor to the X motor. I want to put them in parallel, when I command one, the second is also commanded!!

Can I connect a second motor in parallel after the stepper driver. Or must I connect the command of arduino to a second stepper driver, and this to a second motor.

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davidgoodenough

Re: H bridge 2 parallel motors
October 11, 2013 05:21AM

Registered: 18 years ago
Posts: 123

Well many RepRap machines have exactly that for the Z axis, two motors in parallel driven by one driver. So it should work for the X (or Y) axis as well.

David

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chik

Re: H bridge 2 parallel motors
October 11, 2013 05:28AM

Registered: 13 years ago
Posts: 46

Hi David,

Exactly!!

Think you so much!! I just need to put a radiator on the stepper driver!!

Thnik you!!

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jkoljo

Re: H bridge 2 parallel motors
October 11, 2013 05:44AM

Registered: 13 years ago
Posts: 117

With two motors and one driver you cannot get max speed and torque out of your motors.

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Traumflug

Re: H bridge 2 parallel motors
October 11, 2013 08:53AM

Registered: 16 years ago
Posts: 7,616

Quote

With two motors and one driver you cannot get max speed and torque out of your motors.

Depends on how much current you need. If the driver can spend enough for both, it works. Typically Pololus can't max out steppers anyways, it's always a matter of sufficient torque.

That said, one can run two Pololus in parallel, too. Apply the same Step and Dir signal to both and they should behave identical.

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