Sanyo Stepper not moving with the L298N

[v102]

Hello,

I am having a problem with a Sanyo motor and the L298N, I understand this driver is not the best. Hope I can still make it work.

When I press the buttons I can see the motor vibrating and turn slightly, then stops.

The motor has 0.85 ohms with a 12v (1.5A) power source.
Using 10k resistance. Tested the stepper cables with multimeter for highest resistance.

Here are some photos and the code below.

Please help, thanks.

CODE:

#include <Stepper.h>

const int stepsPerRevolution = 200;  // change this to fit the number of steps per revolution
// for your motor

// initialize the stepper library on pins 8 through 11:
Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11);

int pulse1=2;
int pulse2=3;
int value1;
int value2;

void setup() {
  // set the speed at 60 rpm:
  myStepper.setSpeed(300);
  pinMode(pulse1,INPUT);
  pinMode(pulse2,INPUT);
}

void loop() {
  value1= digitalRead(pulse1);
  value2= digitalRead(pulse2);
  if(value1==HIGH){
    myStepper.step(1);
    //delay(500); 
  }else{
    if(value2==HIGH){
        myStepper.step(-1);
        //delay(500);
    }else{
      myStepper.step(0);
    }
  }
}

[DrDiettrich]

@v102

The motor has 0.85 ohms

Then you definitely need a constant current driver.

[Wawa]

A 0.85 ohm stepper motor will try to draw 12 / 0.85 = 14 Amp from your power supply.
That will fry the L298 and/or the power supply.
As DrDiettrich said, you definitely need a constant current driver, like the DRV8825.
You must set the current on the driver to the 1.2Amp rated current of the motor (or less).
Leo..

[gilshultz]

It is hard to determine what you did from the pictures, can you post an annotated schematic and include links to technical information on the hardware items.

[v102]

Here is a setup that I am trying to get working with my stepper motor.

Instead of getting current regulator DRV8825, would a TB6600 driver work to replace the L298?

The only technical data on the motor I found is this here:

Lugar de origen Japón
Fabricantes (marca)
Modelo 103-594-05XD01
Fases (fase) 2
Número (root) línea 6
Paso ángulo (grados) 0.9
Tensión nominal (V)
Corriente nominal (a) 1.2
Resistencia (ohmios) 0.85
Motor de cilindro Diámetro (mm)
Longitud (mm)
Motor Cuboide Longitud (mm) 42
Ancho (mm) 42
Espesor (mm) 41
Diámetro del eje (mm) 5
Longitud del eje (mm) 18
Peso (g) 360
Otros

[Wawa]

Yes, a TB6600 would work.
Note that the closest step below 1.2Amp of that driver is 1Amp.
Leo..

[v102]

sorry do you mean I would need to set the Amp of the TB6600 driver to 1Amp?

Because the motor works at 1.2Amp, would this be a issue?

[groundFungus]

@v102

Because the motor works at 1.2Amp, would this be a issue?

No, it will probably be fine.

Actually running a stepper below its rated current will make it, and its driver, run cooler and last longer. If the motor misses steps and is not powerful enough, the extra 0.2A would probably not make much difference. You would need a more powerful stepper.