Step motor DC 4-9V/500mA stucks

Hello everyone

I´m trying to run a step motor with my Arduino Mega and EasyDriver V44 A3967.
I did my best but I can´t make it turn.
Can you guys please give me hand ?

Motor specs:

2 phases
4 wires
step angle 18 degrees
Driving Voltage: DC 4-9V/500mA

to test it and identify the coils I measured the resistency among the wires and it´s 20 Ohm.
I also plugged a Led and when I turn the shaft by hand it blinks.
so I assume the motor is working.

To drive it Im using V44 A3967 (Easy Driver).

to power the motor I´m using 4 AA 1.5 v batteries.
Total 6 v connected to EasyDriver power in and the Easydriver red led turns on.

When I run my code the motor does like one step and gets suck.
If I unplug the motor I can turn the shaft by hand but once it connected in my driver running the code I can´t turn the shaft.

Is my 6v enough to power this motor ?

Here is my simple code:

// Easy driver pins declaration

int pin_step =3;
int pin_dir =2;

int steps_motor =20; //I assume 20 steps for one revolution 360/ 18deg because motor step angle=18

void setup()
// Define pins as output
pinMode(pin_step, OUTPUT);
pinMode(pin_dir, OUTPUT);

digitalWrite(pin_step, LOW);
digitalWrite(pin_dir, HIGH); //define direction


void loop()

for (int p=0 ; p < steps_motor; p++)
digitalWrite(pin_step, HIGH);
delay (5);
digitalWrite(pin_step, LOW);
delay (5);


Here is the motor link:,searchweb201602_1_10152_10065_10151_10068_10173_10326_10084_10083_10080_10307_10082_10081_10110_10137_10111_10060_10112_10113_10155_10114_10154_143_10056_10055_10054_10312_10313_10059_10314_100031_10099_10078_10338_10079_10103_10073_10102_440_10052_10053_10142_10107_10050_10051,searchweb201603_20,ppcSwitch_5&btsid=830c0b87-500e-4c05-9ddf-2418152f504c&algo_expid=097165e4-47b5-4a39-ba8a-2ed59e0d6644-0&algo_pvid=097165e4-47b5-4a39-ba8a-2ed59e0d6644

Thanks in advance
Rio de Janeiro, Brazil

Is my 6v enough to power this motor ?

Yes. The current that the 4 batteries output may be nowhere near enough, though. In general, stepper motors are not powered by batteries.

Steppers don't have a voltage rating, so that's a 0.5A stepper of unknown winding resistance. Perhaps
you should measure the winding resistance. Then we can figure out the minimum usable supply voltage.