midwestbta.blogg.se - How to get arduino nodemcu esp 8266on multisim

Connect the fourth pin (GND) to the ground pin of the ESP8266 NodeMCU board.

DHT22 is also known by the name of AM2302. You can check the datasheet of DHT11 and DHT22 to get more information about it. But you can also use any digital pin of ESP8266 NodeMCU.Ī Pull-up resistor is used to keep the data pin high for proper communication between the microcontroller and sensor. Connect this pin with GPIO12/D6 of ESP8266 NodeMCU and also connect the data pin with a 10k pull-up resistor.

Data out is the pin through which we get temperature and humidity samples from the DHT sensor.

Connect it with the 3.3 volt pin of ESP8266 NodeMCU.

The first pin for both sensors is a power supply(Vcc) pin.

Furthermore, the operating voltage range for both sensors is almost and we can directly power these sensors from the power pins of ESP8266. However, DHT11 has a better sampling period. The following table lists the comparison of both DHT sensors.ģ- 6 V DC( directly powerable from ESP32/ESP8266)ģ-5.5 V DC( directly powerable from ESP32/ESP8266)Īs you can see from the above comparison table that DHT22 offers a wider temperature range and resolution for temperature and humidity.

They are quite similar to each other with some differences in specifications.ĭHT22 is almost similar to the DHT11 but the former measures temperature and humidity with higher accuracy and supports a wider range.

It provides a calibrated digital output with a 1-wire protocol. The DHT11/DHT22 is a sensor which measures relative humidity and temperature sensor.