benoit-roussel_turntable/turntable/turntable.ino

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/*
Example sketch to control a stepper motor with A4988 stepper motor driver,
AccelStepper library and Arduino: continuous rotation.
More info: https://www.makerguides.com
*/
// Include the AccelStepper library:
#include "AccelStepper.h"
// Define stepper motor connections and motor interface type.
// Motor interface type must be set to 1 when using a driver
#define dirPin 2
#define stepPin 3
#define motorInterfaceType 1
#define ms1Pin 4
#define ms2Pin 5
#define ms3Pin 6
#define speedPin A0
double lastTime = 0;
double thisTime = 0;
const int SPEED_MIN = 50;
const int SPEED_MAX = 800;
// #define irPin 7
// Create a new instance of the AccelStepper class:
AccelStepper stepper = AccelStepper(motorInterfaceType, stepPin, dirPin);
void setup() {
Serial.begin(115200);
// Set the maximum speed in steps per second:
stepper.setMaxSpeed(4000);
// MS
// 1 2 3
// 0 0 0 full
// 1 0 0 1/2
// 0 1 0 1/4
// 0 0 1 1/8
// 1 1 1 1/16
digitalWrite(ms1Pin, 1);
digitalWrite(ms2Pin, 1);
digitalWrite(ms3Pin, 1);
// Set the speed in steps per second:
stepper.setSpeed(200);
}
void loop() {
thisTime = millis();
if ((thisTime - lastTime) > 1000) {
lastTime = thisTime;
int speed_in = analogRead(speedPin);
Serial.print("speed_in : ");
Serial.print(speed_in);
int speed = map(speed_in, 0, 1023, SPEED_MIN, SPEED_MAX);
Serial.print(" | speed : ");
Serial.println(speed);
stepper.setSpeed(speed);
}
// Step the motor with a constant speed as set by setSpeed():
stepper.runSpeed();
}