• http://www.instructables.com/id/BYJ48-Stepper-Motor/
• library : http://engyfun.blogspot.fr/2015/02/here-is-source-code-for-our-28byj48.html

#include <StepperMotor.h>
 
StepperMotor motor1(8,9,10,11);
StepperMotor motor2(4,5,6,7);
 
void setup(){
  Serial.begin(9600);
  motor1.setStepDuration(1);
  motor2.setStepDuration(1);
}
 
void loop(){
  motor1.step(1000);
  motor2.step(1000);
  delay(2000);
  motor1.step(-1000);
  motor2.step(-1000);
  delay(2000);