Reference
This article provides an in-depth look at humidity sensors, explaining their principle and function, including how they detect air moisture using dielectric materials and display data on OLED modules.
Principle
Humidity sensors are mainly used to detect the humidity level in the air. The inductive component of the sensor adopts special dielectric material whose dielectric constant varies when it is subjected to change in humidity.
Other Supplementary Information
Humidity sensors are able to detect the amount of water vapor in air. Connect all parts as the diagram shows below. Power up, and read the humidity data displayed on the OLED display module.
We can also connect the humidity sensor with other output modules to realize different functions.
- The strength of the output signal increases as the humidity rises.
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