With this PCB you can build the d-diot hub v.3.0-A, which is:A dual wifi MySensors gateway (RFM69 and NRF24) based on ESP8266A Bluetooth low energy (BLE) gateway based on ESP32A WS2812B adressable rgb LEDs controller based on ESP32This IoT hub was meant to be used with Home Assistant and it has a modular design, so it can be combined with the hub B. The case is 3d printable and available in thingiverse, the firmware for each module is available in github while all the details and the build instructions are in the dedicated wiki page.