39 lines
863 B
C++
39 lines
863 B
C++
/*
|
|
* MotorKnob
|
|
*
|
|
* A stepper motor follows the turns of a potentiometer
|
|
* (or other sensor) on analog input 0.
|
|
*
|
|
* http://www.arduino.cc/en/Reference/Stepper
|
|
* This example code is in the public domain.
|
|
*/
|
|
|
|
#include <Stepper.h>
|
|
|
|
// change this to the number of steps on your motor
|
|
#define STEPS 100
|
|
|
|
// create an instance of the stepper class, specifying
|
|
// the number of steps of the motor and the pins it's
|
|
// attached to
|
|
Stepper stepper(STEPS, 8, 9, 10, 11);
|
|
|
|
// the previous reading from the analog input
|
|
int previous = 0;
|
|
|
|
void setup() {
|
|
// set the speed of the motor to 30 RPMs
|
|
stepper.setSpeed(30);
|
|
}
|
|
|
|
void loop() {
|
|
// get the sensor value
|
|
int val = analogRead(0);
|
|
|
|
// move a number of steps equal to the change in the
|
|
// sensor reading
|
|
stepper.step(val - previous);
|
|
|
|
// remember the previous value of the sensor
|
|
previous = val;
|
|
} |