Control 6 Stepper Motors

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DLMiller
 
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Control 6 Stepper Motors

Post by DLMiller »

I am working on a project where I can control 6 stepper motors each controlled by a pressing one of six buttons interface with I2C. Then another button to home the six motors.

I think The ATmega328 and some Adafruit Motor/Stepper/Servo Shield should work. But I need some advice from Adafruit Support and a recommendation on the best configuration weather it be an Arduino, compatible or Raspberry Pi.

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Re: Control 6 Stepper Motors

Post by adafruit_support_bill »

What is the application and which stepper motors are you planning to control?

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DLMiller
 
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Re: Control 6 Stepper Motors

Post by DLMiller »

I am using EMMA 17. I'm not going to get into details. It is an project that will have 6 stepper each stepper controlled separately by either a Arduino or Raspberry Pi and when home all stepper will return to the original start position.

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Re: Control 6 Stepper Motors

Post by adafruit_support_bill »

I am using EMMA 17. I'm not going to get into details.
The NEMA frame-size designation only tells us where to drill the holes for the mounting bolts. We need more details to offer any meaningful advice.

Please post a link to te electrical specifications for the motors.

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DLMiller
 
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Re: Control 6 Stepper Motors

Post by DLMiller »

It is a standard Sepper motor BiPolar with 4 wires. All a I am asking is will your modal work as described in my earlier?

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Re: Control 6 Stepper Motors

Post by adafruit_support_bill »

It is a standard Sepper motor BiPolar with 4 wires
There is no such thing as a "standard Sepper motor BiPolar with 4 wires". Motors have different electrical characteristics and you need to match the driver characteristics to the motor.

https://learn.adafruit.com/all-about-st ... he-stepper

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DLMiller
 
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Re: Control 6 Stepper Motors

Post by DLMiller »

I'm not trying to be difficult I'm just not willing to give you all the information about my project.

Here is the specs.

Current - 1.7amp/phase
Rotor inertia - 82gcm2
Resistance -1.8ohms
Rated voltage - 3.06 volts
Induction - 3.8mH -+20%
Insulation resistance - 100Mohms (500V)
Insulated class - B

That is all the info I have.

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Re: Control 6 Stepper Motors

Post by adafruit_support_bill »

Based on those electrical specs, the motor requires a current limiting "Chopper" type driver. That rules out the motor shield entirely.

Assuming that you want to get the full rated performance from the motor, you will need a current limiting driver capable of handling 1.7A/phase. And since you have 6 of them to control, you will probably want to minimize the number of microcontroller pins required to control each one.

I would recommend looking at www.pololu.com. They carry a good selection of medium-power current-limiting stepper drivers. Many of which have 2-pin 'step and direction' control.

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