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