#include <DHT.h>
#include <Servo.h>
#include <LiquidCrystal_1602_RUS.h>
 
#define DHTPIN 2
#define DHTTYPE DHT11
#define TRIG_PIN 4
#define ECHO_PIN 3
#define LED_PIN 5
#define SERVO_PIN 6
 
LiquidCrystal_1602_RUS lcd(7, 8, 9, 10, 11, 12);
DHT dht(DHTPIN, DHTTYPE);
Servo myServo;
 
unsigned long lastSensorRead = 0;
float temperature = 0;
float humidity = 0;
 
int getDistance() {
int readings[3];
for (int i = 0; i < 3; i++) {
digitalWrite(TRIG_PIN, LOW);
delayMicroseconds(2);
digitalWrite(TRIG_PIN, HIGH);
delayMicroseconds(10);
digitalWrite(TRIG_PIN, LOW);
long duration = pulseIn(ECHO_PIN, HIGH);
readings[i] = duration * 0.034 / 2;
delay(10);
}
for (int i = 0; i < 2; i++) {
for (int j = i + 1; j < 3; j++) {
if (readings[i] > readings[j]) {
int tmp = readings[i];
readings[i] = readings[j];
readings[j] = tmp;
}
}
}
int dist = readings[1];
if (dist > 100 || dist == 0) dist = 999;
return dist;
}
 
void setup() {
Serial.begin(9600);
dht.begin();
myServo.attach(SERVO_PIN);
pinMode(LED_PIN, OUTPUT);
pinMode(TRIG_PIN, OUTPUT);
pinMode(ECHO_PIN, INPUT);
 
lcd.begin(16, 2);
lcd.setCursor(0, 0);
lcd.print("Умная комната");
delay(1500);
lcd.clear();
 
// Начальное состояние: дверь закрыта (поворот на 90)
myServo.write(90);
digitalWrite(LED_PIN, LOW);
}
 
void loop() {
if (millis() - lastSensorRead > 2000) {
humidity = dht.readHumidity();
temperature = dht.readTemperature();
if (isnan(humidity) || isnan(temperature)) {
humidity = 0;
temperature = 0;
}
lastSensorRead = millis();
}
 
lcd.setCursor(0, 0);
lcd.print("Темп:");
lcd.print(temperature, 1);
lcd.print("C");
lcd.setCursor(10, 0);
lcd.print("Вл:");
lcd.print(humidity, 1);
lcd.print("%");
 
int dist = getDistance();
bool doorOpen = (dist > 5 && dist < 20);
 
lcd.setCursor(0, 1);
if (doorOpen) {
myServo.write(0); // открытие (поворот в другую сторону)
digitalWrite(LED_PIN, HIGH);
lcd.print("Двр:Откр");
} else {
myServo.write(90); // закрытие
digitalWrite(LED_PIN, LOW);
lcd.print("Двр:Зкр ");
}
 
lcd.print(" ");
lcd.print("Ул:");
if (dist < 100) {
lcd.print(dist);
lcd.print("см");
} else {
lcd.print("---");
}
 
Serial.print("Расстояние: ");
Serial.println(dist);
delay(150);
}