#include <Stepper.h>

// Define the number of steps per revolution for the stepper motor
const int steps_per_revolution = 200;

// Define the pins for the stepper motor
const int motor_pin1 = 8;
const int motor_pin2 = 9;
const int motor_pin3 = 10;
const int motor_pin4 = 11;

// Define the pins for the LM35 temperature sensor
const int lm35_pin = A0;

// Define the temperature threshold in Celsius
const float temp_threshold = 28.0;

Stepper myStepper(steps_per_revolution, motor_pin1, motor_pin3, motor_pin2, motor_pin4);

void setup() {
  // Initialize the serial communication
  Serial.begin(9600);

  myStepper.setSpeed(10);
}

void loop() {
  // Read the LM35 value
  int lm35_value = analogRead(lm35_pin);

  // Convert the LM35 value to temperature in Celsius
  float voltage = lm35_value * 5.0 / 1023.0; 
  float temperature = voltage * 100.0; 

  // Print the temperature value to the serial monitor
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");

  // If the temperature is above the threshold, turn on the stepper motor
  if (temperature > temp_threshold) {
    myStepper.step(steps_per_revolution); 
  }

  delay(1000);
}