We can directly connect them with ESP32/ESP8266 to obtain sensor output reading. We can use the same Arduino sketch to read temperature and humidity readings by selecting the DHT type inside the code.ĭHT sensors are pre-calibrated. Regardless of the differences, both DHT sensors have the same working principle and same pinout. Furthermore, the operating voltage range for both sensors is almost similar and we can directly power these sensors from power pins of ESP32 and ESP8266. However, DHT11 has a better sampling period. DHT22 offers a wider temperature range and resolution for temperature and humidity. Let us define some InfluxDB key terms that are commonly used while using this database.ĭHT22 is almost similar to the DHT11 but the former measures temperature and humidity with higher accuracy and supports a wider range. A vast amount of data can be efficiently stored every second with timestamps associated with each data point. It is used for storing and acquiring time series data commonly used in IoT applications, real time data analysis, operations monitoring etc. InfluxDB is an open-source time series database. This makes it extremely handy to use in IoT projects where data logging with time is of importance. One of the great features of using the InfluxDB database is that you can store your data in timestamps over a determined period of time. By the end of this tutorial, you will be able to know how to set up an ESP32/ESP8266 InfluxDB database and visualize the temperature and humidity readings acquired from DHT22 in a dashboard. Moreover, we will also show you how to build your dashboard so that you are able to view your data in a more meaningful manner e.g.

We will show you how to create a database bucket and send ESP32/ESP8266 sensor data to the InfluxDB database. In this ESP32/ESP8266 compatible guide, we will introduce you to InfluxDB and show you how to send DHT11/DHT22 sensor readings to the InfluxDB time-series database.

Dht11 esp32 connection