Adafruit Motor Shield v1: Different Problems with different

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ygreq
 
Posts: 54
Joined: Mon May 02, 2011 11:17 am

Adafruit Motor Shield v1: Different Problems with different

Post by ygreq »

Hi there,

I have an Adafruit Motor Shield v1 and I also bought a Stepper motor - NEMA-17 size - 200 steps/rev, 12V 350mA (https://www.adafruit.com/products/324). And I also bought 5 larger Steppers Model Code: 17HS8401, 4-lead, Nema17, 78Oz-in (52 N/cm), 1.8A, Phase Resistance 1.8Ohm,

I am using a 12V 2A Power Supply for these tests.

I am using this sketch for testing. The stepper turns at a constant speed.

Code: Select all

// ConstantSpeed.pde
// -*- mode: C++ -*-
//
// Shows how to run AccelStepper in the simplest,
// fixed speed mode with no accelerations
// Requires the AFMotor library (https://github.com/adafruit/Adafruit-Motor-Shield-library)
// And AccelStepper with AFMotor support (https://github.com/adafruit/AccelStepper)
// Public domain!

#include <AccelStepper.h>
#include <AFMotor.h>

AF_Stepper motor1(200, 2);


// you can change these to DOUBLE or INTERLEAVE or MICROSTEP!
void forwardstep() {  
  motor1.onestep(FORWARD, SINGLE);
}
void backwardstep() {  
  motor1.onestep(BACKWARD, SINGLE);
}

AccelStepper stepper(forwardstep, backwardstep); // use functions to step

void setup()
{  
   Serial.begin(9600);           // set up Serial library at 9600 bps
   Serial.println("Stepper test!");
  
   stepper.setSpeed(50);	
}

void loop()
{  
   stepper.runSpeed();
}

Problem 1 with Stepper bought from Adafruit:
The stepper turns, but..
Is it normal for the Stepper bought from Adafruit to get really hot? Because it does. Should I do something different?


Problem 2 with the 17HS8401 Stepper:

The stepper does not turn. It just wiggles a few nanometers. And the IC2 gets really, really hot. I am guessing that, if I let it plugged in, the IC3 would fry. I tested all 5 steppers with different wiring configurations.

Any ideas what I should do?

Note: It says that the wiring for the 17HS8401 Stepper is as follows Red: A+ Green: A- Yellow: B+ Blue: B-

Thank you for looking into this,
ygreq

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adafruit_support_bill
 
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Re: Adafruit Motor Shield v1: Different Problems with differ

Post by adafruit_support_bill »

The stepper turns, but..
Is it normal for the Stepper bought from Adafruit to get really hot? Because it does. Should I do something different?
Yes. Stepper motors do tend to run hot. https://learn.adafruit.com/all-about-stepper-motors
Steppers Model Code: 17HS8401, 4-lead, Nema17, 78Oz-in (52 N/cm), 1.8A, Phase Resistance 1.8Ohm,

...

Problem 2 with the 17HS8401 Stepper:

The stepper does not turn. It just wiggles a few nanometers. And the IC2 gets really, really hot. I am guessing that, if I let it plugged in, the IC3 would fry. I tested all 5 steppers with different wiring configurations.
These motors are not compatible with the motor shield. They require 3 times as much current as the shield can supply. Trying to run these motors will overheat and damage your shield.
https://learn.adafruit.com/all-about-st ... he-stepper

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ygreq
 
Posts: 54
Joined: Mon May 02, 2011 11:17 am

Re: Adafruit Motor Shield v1: Different Problems with differ

Post by ygreq »

Thank you so much.

All the best!
ygr

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