Task
To create a WI-FI module that would enable the existing air humidifier system to be controlled remotely using the Internet. The module must communicate with the controlled system using the Modbus protocol.
The solution
A WI-FI module prototype was designed and manufactured. An ESP32 controller was used. A pre-programmed Android app to control the air humidifier system. Data exchange is implemented using the MQTT protocol.
![WI-FI module for smart air humidifier with ESP32](http://www.kpv.lt/wp-content/uploads/2024/06/ESP32-MQTT-to-Modbus-converter-for-smart-air-humidifier-1024x577.jpg)