DC and Stepper Motor HAT Triple Stack

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banangineer
 
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DC and Stepper Motor HAT Triple Stack

Post by banangineer »

Hello,

I'm working on a project where I will need to control six stepper motors, and as such, we bought three HATs (https://learn.adafruit.com/adafruit-dc- ... cking-hats). The problem is with supplying power. We have found videos from the Adafruit Team that use two HATs stacked with a singular power supply, but nothing on using more than that.

Would it be possible to use a single 12V, 5A power supply to power all three HATs each using two stepper motors?

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adafruit_support_bill
 
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Re: DC and Stepper Motor HAT Triple Stack

Post by adafruit_support_bill »

Yes it is possible to power three HAT's worth of motors with a single supply. Just split the feed wires or use jumpers from one HAT to the next.

But first it would be prudent to make sure that the motor/HAT/Power supply combination is workable. What are the electrical specifications for the motors you are using?

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banangineer
 
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Re: DC and Stepper Motor HAT Triple Stack

Post by banangineer »

adafruit_support_bill wrote:Yes it is possible to power three HAT's worth of motors with a single supply. Just split the feed wires or use jumpers from one HAT to the next.

But first it would be prudent to make sure that the motor/HAT/Power supply combination is workable. What are the electrical specifications for the motors you are using?
Thanks for the quick reply. I'm planning to use six of these motors https://www.banggood.com/DC-5V-2-Phase- ... rehouse=CN

They would each be 5V motors as recommended from the documentation, so nothing should be overload the hat, but it's a matter of distributing power correctly. We would like to use no more than two electrical outlets (one for the HAT, one for the Pi).

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Re: DC and Stepper Motor HAT Triple Stack

Post by adafruit_support_bill »

Those motors should be fine. But you will need a 5v power source for them. The 12v supply you propose will overload the motors.

With a 30 ohm phase resistance, each motor will draw up to 167 mA per phase for up to 333mA per motor. So for 6 motors you will need a supply capable of delivering 5v@2A continuous.

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banangineer
 
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Re: DC and Stepper Motor HAT Triple Stack

Post by banangineer »

So given that we'd need a 5V/2A power supply, would something like this suffice? https://www.adafruit.com/product/276

Also, are there any adapters so that we can attach the power to the HATS? I think I've seen them but want to make sure.

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Re: DC and Stepper Motor HAT Triple Stack

Post by adafruit_support_bill »

That supply should work. You can either cut off the connector and wire direct, or use an adapter like this: https://www.adafruit.com/product/368

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Re: DC and Stepper Motor HAT Triple Stack

Post by banangineer »

I see what you mean. I'll try this out and see what happens. Thanks again for your help!

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