WatchWinder

#include <Stepper.h>
#include <time.h>

#define GOT_HERE()  do {Serial.print('['); Serial.print(__LINE__); Serial.println(']'); Serial.flush();} while(0)

const int steps_per_rev = 2038;

#define IN1 8
#define IN2 9
#define IN3 10
#define IN4 11

Stepper motor(steps_per_rev, IN1, IN3, IN2, IN4);

void setup() {
    srand(time(NULL));
    Serial.begin(115200);
}

void WinderMotion(int8_t dir, uint16_t dist, uint8_t speed){
    motor.setSpeed(speed);
    motor.step(dir * dist);
}

void loop() {
    uint8_t rdir = 0, rdist = 0, rspd = 0, speed = 0;
    int8_t dir = 0;
    uint16_t dist = 0;

    rdir = rand() % 2, rdist = rand() % 3, rspd = rand() % 3;

    dir = rdir * 2 - 1;
    dist = steps_per_rev / (1 << rdist);
    speed = (rspd + 1) * 2;
    Serial.print("Dir: ");
    Serial.println(dir);
    Serial.print("Dist: ");
    Serial.println(dist);
    Serial.print("Speed: ");
    Serial.println(speed);
    WinderMotion(dir, dist, speed);
}