#include <AccelStepper.h>
AccelStepper motores(AccelStepper::DRIVER, 2, 3),

void setup(){

stepper.setMaxSpeed(1000);
while(true) {
  int v = analogRead(A0);
  stepper.setSpeed(map(v,0,1023,0,1000));
  stepper.runSpeed();
}
}

void loop(){
  
}