#include <DHT.h>
#include "DHTesp.h"
#define DHTPIN 15 // Digital pin connected to the DHT sensor
#define DHTTYPE DHT22 // DHT 22 (AM2302)
#define RED_LED 13 // Digital pin connected to the red LED
#define GREEN_LED 12 // Digital pin connected to the green LED
#define YELLOW_LED 14
DHT dht(DHTPIN, DHTTYPE);
void setup() {
Serial.begin(9600);
pinMode(RED_LED, OUTPUT);
pinMode(GREEN_LED, OUTPUT);
pinMode(YELLOW_LED, OUTPUT);
dht.begin();
}
void loop() {
digitalWrite(YELLOW_LED, HIGH);
delay(2000); // Delay between sensor readings
// Reading temperature in Celsius
float temperature = dht.readTemperature();
float humidity = dht.readHumidity();
if (isnan(temperature)|| isnan(humidity)) {
Serial.println("Failed to read from DHT sensor!");
return;
}
Serial.print("Temperature: ");
Serial.print(temperature);
Serial.println("°C");
Serial.print("Humidity: ");
Serial.print(humidity);
Serial.println("%");
// Check temperature condition
if (temperature > 40 || humidity >60) {
blinkLED(RED_LED); // Blink red LED
} else {
blinkLED(GREEN_LED); // Blink green LED
}
}
void blinkLED(int pin) {
digitalWrite(pin, HIGH); // Turn the LED on
delay(500); // Wait for 500 milliseconds
digitalWrite(pin, LOW); // Turn the LED off
delay(500); // Wait for 500 milliseconds
}