ESP32 + DHT Sensor แสดงผลบนจอ OLED 128×64

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

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1

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

#define DHTPIN 4
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);

  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println("SSD1306 allocation failed");
    for (;;);
  }

  dht.begin();
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
}

void loop() {
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  display.clearDisplay();
  display.setCursor(0, 10);
  display.println("DHT Sensor");
  display.print("Temp: ");
  display.print(t);
  display.println(" C");

  display.print("Hum : ");
  display.print(h);
  display.println(" %");

  display.display();
  delay(2000);
}