iot

#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

// Define the pin for the DHT11 sensor
#define DHTPIN 2
#define DHTTYPE DHT11

// Initialize DHT sensor
DHT dht(DHTPIN, DHTTYPE);

// Define the I2C address for the display
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
#define SCREEN_ADDRESS 0x3C // Common I2C address for SSD1306

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

void setup() {
  // Start serial communication
  Serial.begin(9600);
  
  // Start the DHT sensor
  dht.begin();
  
  // Start the display
  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  display.display();
  delay(2000);
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(WHITE);
}

void sendSensor() {
  // Read humidity and temperature
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  
  // Check if any reads failed and exit early
  if (isnan(h) || isnan(t)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }
  
  // Print values to Serial
  Serial.print(F("Humidity: "));
  Serial.print(h);
  Serial.print(F("%  Temperature: "));
  Serial.print(t);
  Serial.println(F("°C "));
  
  // Display values on OLED
  display.clearDisplay();
  display.setCursor(0,0);
  display.print(F("Humidity: "));
  display.print(h);
  display.print(F("%"));
  display.setCursor(0, 10);
  display.print(F("Temp: "));
  display.print(t);
  display.print(F(" C"));
  display.display();
}