where is the error ???

Projects Programming
5

is that what do u mean

#include <Stepper.h>

const int stepsPerRevolution = 100; // change this to fit the number of steps per revolution
// for your motors

Stepper stepper(stepsPerRevolution, 4, 5, 6, 7);

Stepper myStepper(stepsPerRevolution, 8,9,10,11);
int stepCount = 0; // number of steps the motor has taken

void setup()
{
}

void loop() {
stepper.setSpeed(60);
stepper.step(200);
delay(100);
stepper.setSpeed(20);
stepper.step(-50);

// read the sensor value:
int sensorReading = analogRead(A0);
// map it to a range from 0 to 100:
int motorSpeed = map(sensorReading, 0, 1023, 0, 100);
// set the motor speed:
if (motorSpeed > 0) {
myStepper.setSpeed(motorSpeed);

// step 1/100 of a revolution:
myStepper.step(stepsPerRevolution/100);
}
}