2 stepper don't running together

hey,

i have 2 steppers both of them runs perfect single control (a code 1 stepper, similar following code). don't run @ same time, because 1 of them more steppes (he runs unround). think problem in code can't find it.

fabscan shield  (http://www.watterott.com/de/arduino-fabscan-shield)


a4988-driver  (http://www.watterott.com/de/pololu-a4988-schrittmotortreiber)
- limited 800mv

arduino uno


stepper motor: bipolar, 200 steps/rev, 20×30mm, 3.9v, 0.6 a/phase  (https://www.pololu.com/product/1204)

code: [select]


int enpin = 5;
int steppin = 6;
int dirpin = 7;

int enpinl = 2;
int steppinl = 3;
int dirpinl = 4;

void setup() {
  pinmode(enpin,output);
  pinmode(steppin,output);
  pinmode(dirpin,output);
  digitalwrite(enpin,low); // en muss auf low= 0-> eingschalten
 
 pinmode(enpinl,output);
 pinmode(steppinl,output);
 pinmode(dirpinl,output);
 digitalwrite(enpinl,low); // en muss auf low= 0-> eingschalten
}

void loop() {
  digitalwrite(dirpin,high); //richtung festlegen
  digitalwrite(dirpinl,high);
  for( int = 0; < 200;i++){
    digitalwrite(steppin,high);
    delay(10);
    digitalwrite(steppinl,high);
    delay(10);
    digitalwrite(steppin,low);
    delay(10);
    digitalwrite(steppinl,low);
    delay(10);
  }
  delay(1000);
 

}


it's delays(). delays evil, arduino can 1 one thing @ time delay tell arduino sit , nothing.

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