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Stepper motor and raspberry pi
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Stepper motor and raspberry pi

by endre on Thu May 19, 2022 4:06 pm

Hello.

I want to control a stepper motor with a raspberry pi.
The motor specs are: E Series Nema 34 Stepper Motor Bipolar 1.8deg 4.8 Nm(679.87oz.in) 6.0A 86x86x80mm 4 Wires

Will the Adafruit stepper HAT work for this? If not any suggestions on what will work?

I wanted to use the Raspberry Pi because I have one laying around, but would an audrino work better?

My second step of this project is to make the motor work on voice commands...
Any suggestions?

Endre

endre
 
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Re: Stepper motor and raspberry pi

by mikeysklar on Thu May 19, 2022 5:32 pm

The H-Bridge on the stepper hat can only provide up to 1.2A per channel.

Your stepper requires more current than the Stepper Hat can provide with its 6A rating.

Motors are controlled by TB6612 MOSFET drivers with 1.2A per channel current capability (you can draw up to 3A peak for approx 20ms at a time),


https://www.adafruit.com/product/2348

Do you really need to use such a large stepper for your application? I've heard of others using solids state relays to expand the shields ability, but that is expensive and only works on unipolar steppers.

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Re: Stepper motor and raspberry pi

by adafruit_support_bill on Thu May 19, 2022 6:46 pm

Those motor specs are incomplete. You will need to know other details like the phase resistance in order to choose a compatible driver. But it is well beyond what the motor HAT can handle.

www.pololu.com carries a wider range of hobby-grade stepper drivers. But for 6A/phase motors, you will probably need an industrial grade controller such as a DM860. These are available from several sources on-line.

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Re: Stepper motor and raspberry pi

by endre on Fri May 20, 2022 1:31 pm

Thanks for the replies.

No mikeysklar, I most likely don't need this big motor, but this is the one I got :)
And Bill, thanks for the suggestion. They have some nice controllers that can be used by Arduino, so I would guess also raspberry pi...

I will see if I get a reply from them :)

Thanks again to both.

endre
 
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