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- /*
- Stepper Motor Control - speed control
- This program drives a unipolar or bipolar stepper motor.
- The motor is attached to digital pins 8 - 11 of the Arduino.
- A potentiometer is connected to analog input 0.
- The motor will rotate in a clockwise direction. The higher the potentiometer value,
- the faster the motor speed. Because setSpeed() sets the delay between steps,
- you may notice the motor is less responsive to changes in the sensor value at
- low speeds.
- Created 30 Nov. 2009
- Modified 28 Oct 2010
- by Tom Igoe
- */
- #include <Stepper.h>
- const int stepsPerRevolution = 200; // change this to fit the number of steps per revolution
- // for your motor
- // initialize the stepper library on pins 8 through 11:
- Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11);
- int stepCount = 0; // number of steps the motor has taken
- void setup() {
- // nothing to do inside the setup
- }
- void loop() {
- // 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);
- }
- }
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