Stepper Motor Vibrating

Projects Programming
1

Hi guys, kinda need some help here. I am trying to run a stepper motor here and the specs is listed below:
rated voltage= 3.25V
Rated Current 1.3A

The stepper motor is connected to easy driver. The driver power source is from arduino's 5V.

I have managed to run a stepper motor with rated voltage 5V. With the below code:

#include <AccelStepper.h>

AccelStepper stepper1(1, 2, 3);

void setup()
{
Serial.begin(9600);
Serial.setTimeout(10);
stepper1.setMaxSpeed(50000);
stepper1.setAcceleration(50000);

}

void loop()
{

stepper1.setSpeed(500);

stepper1.runSpeed();
delay (1);

}

But when i changed the motor into the 3.25V all i can hear are the vibration but no turning. I pretty sure the wiring is correct. Is it because coding or power source ?

I apologize as my basic in electronic stuff is still basic. Please bear with me.
Thanks in advance

2

From the Sparkfun EasyDriver web page:-

The EasyDriver requires a 6V to 30V supply to power the motor

And you most definitely cannot do this:-

The driver power source is from arduino's 5V.

The Arduino cannot supply anywhere near that much current at 5V, and even less at 3.3V. You must use a separate power supply.

Edit: Furthermore, the EasyDriver cannot be used for a stepper that draws 1.3A. Again, from the Sparkfun page:-

Adjustable current control from 150mA/phase to 700mA/phase

3

Yeah i was thinking that too.

But i am able to power 2 5V stepper motor just fine.
Thats why i was wondering how could that happen?

4

lordchickenbreast:
Yeah i was thinking that too.

But i am able to power 2 5V stepper motor just fine.
Thats why i was wondering how could that happen?

Read the edits to my last post.

5

You may find some useful stuff in these links
Stepper Motor Basics
Simple Stepper Code

...R