/********************************************************
**         More info about the project at:             **
**  http://lusorobotica.com/index.php?topic=106.0  **
**   by TigPT         at         [url=http://www.LusoRobotica.com]www.LusoRobotica.com[/url]  **
*********************************************************/
int dirPin = 9;
int stepperPin = 8;
int speedM = 10000;

void setup() {
  pinMode(dirPin, OUTPUT);
  pinMode(stepperPin, OUTPUT);
  digitalWrite(dirPin,true);
}

void loop(){
    digitalWrite(stepperPin, HIGH);
    delayMicroseconds(speedM);
//    delay(speedM);
    digitalWrite(stepperPin, LOW);
//    delay(speedM);
    delayMicroseconds(speedM);
}