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

#define ONE_WIRE_BUS 2
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

const int voltagePin5V = A0;
const int voltagePin12V = A1;

const int fanPin = 3;
volatile int fanRPM = 0;
unsigned long previousMillis = 0;
const long interval = 1000;

void fanRPMCount() {
  fanRPM++;
}

void setup() {
  Serial.begin(9600);
  sensors.begin();

  pinMode(fanPin, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(fanPin), fanRPMCount, FALLING);
}

float readVoltage(int pin) {
  int sensorValue = analogRead(pin);
  float voltage = sensorValue * (5.0 / 1023.0);
  return voltage * 2;
}

void loop() {
  sensors.requestTemperatures();
  float temperature = sensors.getTempCByIndex(0);

  float voltage5V = readVoltage(voltagePin5V);
  float voltage12V = readVoltage(voltagePin12V);

  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= interval) {
    previousMillis = currentMillis;
    int rpm = fanRPM * 60 / 2;
    fanRPM = 0;

    Serial.print("Температура: ");
    Serial.print(temperature);
    Serial.println(" C");

    Serial.print("Напруга 5V: ");
    Serial.print(voltage5V);
    Serial.println(" V");

    Serial.print("Напруга 12V: ");
    Serial.print(voltage12V);
    Serial.println(" V");

    Serial.print("Оберти вентилятора: ");
    Serial.print(rpm);
    Serial.println(" RPM");

    Serial.println("-------------------");
  }
}