Home thermometer using a servo

Projects Programming
2

I didn't quite understand your difficulty, but see if the code below meets your needs.

/*  Atmega 328  (Nano)
    sensor type DS18B20
    22/01/2024
*/

#include <Servo.h>
#include <OneWire.h>
#include <DallasTemperature.h>

const int SERVO_PIN  = 5; // Arduino pin connected to Servo Motor's pin
const int SENSOR_PIN = 2; // Arduino pin connected to DS18B20 sensor's DATA pin
const float TEMPERATURE_THRESHOLD = 30; // °C  20

Servo servo; // create servo object to control a servo
OneWire oneWire(SENSOR_PIN);         // setup a oneWire instance
DallasTemperature sensor(&oneWire); // pass oneWire to DallasTemperature library
float temperature;
float servoposraw;
float servopos;


void setup() {
  Serial.begin(9600);      // initialize serial
  servo.attach(SERVO_PIN); // attaches the servo on pin 5 to the servo object,  pin 5?  servo.write(0);
  servo.write(0);
  sensor.begin();          // initialize the sensor
}

void loop() {
  delay(1000);
  sensor.requestTemperatures();             // send the command to get temperatures
  temperature = sensor.getTempCByIndex(0);  // read temperature in Celsius
  if (temperature >= 10 and temperature <= 30) {
    servoposraw = (180. / 60.) * temperature;
    servopos = 180 - servoposraw;
    servo.write(servopos);
    Serial.println(servopos);
    Serial.print("Temperature: ");
    Serial.print(temperature);
    Serial.print("°C => servo angle: ");
  }
}