I am building an ESP32-based LED controller working with HomeKit using the HomeSpan library. For past couple of months I have done several iterations. With the latest being custom-designed PCB with four selectable channels.

First prototype included one PWM controlled channel to power the LED strip. It was intended to be connected in series between power supply and the strip. Next version I have made had four channels to control independed stips with single device or to controll RGB LED strip.

Latest version is custom-designed PCB featuring four channels whose function can be selected. These can be used as independend channels or work with RGB strip as well as two of them could be used with adressable strips and another two can be used as a button input.