Music box controller

musicbox.ino

int REED_PIN = D0;
int MOTOR_PIN = D3;
int LED_PIN = D7;
int MOTOR_SPEED = 255;

void setup() {
    pinMode(LED_PIN, OUTPUT);
    pinMode(REED_PIN, INPUT_PULLUP);
    pinMode(MOTOR_PIN, OUTPUT);
}

void loop() {
    bool lidIsOpen = digitalRead(REED_PIN) == LOW;
    if (lidIsOpen) { 
        digitalWrite(LED_PIN, HIGH); 
        startMotor();
    } else {
        digitalWrite(LED_PIN, LOW); 
        stopMotor();
    }
}

void startMotor() {
    analogWrite(MOTOR_PIN, MOTOR_SPEED);  
}

void stopMotor() {
    analogWrite(MOTOR_PIN, 0);
}