SparkFun Easy Driver stepper motor gone crazy !

Other Hardware Motors, Mechanics, Power and CNC
1

Hey,

I'm using https://www.sparkfun.com/products/10267 SparkFun EasyDriver with the following code:

void setup()
{
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(12, OUTPUT);
    
  Serial.begin(9600);
  Serial.println("start");
}

void loop()
{
  stepper(9 ,10, 1000, HIGH);
  stepper(7 ,8, 1000, HIGH);
  stepper(6 ,12, 1000, HIGH);
}

void stepper(int StepPin, int DirPin, int Steps, int Direction)
{
    Serial.print("In stepper ");
    Serial.println(StepPin);
    int i;
    digitalWrite(DirPin, Direction);
    for (i=0; i < Steps; i++)
    {
        digitalWrite(StepPin, HIGH);
        delayMicroseconds(1000);
        digitalWrite(StepPin, LOW);
        delayMicroseconds(1000);
    }
}

It used to work good but suddenly without making any changes
The motors just shaking, i mean it looks like it goes 1 step forward then 1 backward very fast...
I tried changing delay, pins, direction but nothing changes it...

The motor just going crazy...

Any ideas?

2

Has the power supply changed? Have you tried adjusting the current regulator potentiometer on the Easy Driver board?

3

magagna:
Has the power supply changed? Have you tried adjusting the current regulator potentiometer on the Easy Driver board?

Nothing changed in the power supply.. and i tried adjustingthe potentiometer...
Nothing seems to work..

The only thing that changed is a new Mega 2560 and also tried with a new Uno..
I also got a new 10 meter USB cable.

4

Do you have a common ground between the Arduino, stepper driver, and stepper motor power supply?

5

Check motor wiring. And check it again. That is also what happens when the phases aren't wired correctly.