This Arduino project reads data from DHT11 and DHT22 sensors to measure temperature and humidity. The DHT11 sensor is a basic and affordable option, while the DHT22 sensor provides higher accuracy.

Circuit Diagram. The circuit diagram for interfacing DHT11 temperature and humidity sensor with ESP32 is given below. Interfacing the DHT11 sensor with ESP32 is very simple as it has only three pins.

We will first interface the Sensor with ESP32 only and check the temperature and humidity reading in Shell Window. Similarly, we will add extra 0.96″/1.3″ I2C oled display to the same circuit and ...