SMOKE SMOKE

We connected the IoT four-channel dimmer module with built-in relays to four dimmable LED lighting fixtures (it is necessary to replace the ballasts) and, using the ESP32 microcontroller, we connected the aforementioned module and four 10kOhm potentiometers. Full caution is required considering that the module is powered by a 230V cable. If the lighting fixtures are made of a metal housing, it is mandatory to connect the grounding conductor to each lighting fixture. Programming the dimmer module is problematic because the option of current passing through zero must be solved, and a special function is used for this.

The entire system is placed on a wooden base for testing, and after the functionality has been verified, it is installed on the wall panel in the IoT classroom. The challenge for those who know more is to connect the ESP32 microcontroller to a smartphone and regulate the intensity of the lighting via a mobile phone, which is our next step.