‘ ESP8266 and ESP32 OLED driver for SSD1306 displays‘ To run DHT 11 with NodeMCU ESP8266 we need hardware specific library called Connection of ESP8266 NodeMCU and DHT11 Sensor wiring-diagram-dht-and-esp8266ĭo the wiring as shown in diagram Library for DHT sensor Its temperature measuring range is from -40 to +125 degrees Celsius with +-0.5 degrees accuracy, while the DHT11 temperature range is from 0 to 50 degrees Celsius with +-2 degrees accuracy. The DHT22 is the more expensive version which obviously has better specifications. Vcc - power supply pin Difference between DHT 11 and DHT 22 It produce digital signal at data pin no analog input pin required at microcontroller side.ĭHT 11 sensor is very simple it have only 3 terminals It have capacitive humidity sensor and thermistor to measure temperature and humidity of surrounding air. ![]() ![]() DHT 11 is very basic and low cost digital temperature and humidity sensor.
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