Smart Home Controller V2

There are many smart WIFI enabled devices @home which a controlled by Smartphone/PC. To enable guests to turn certain devices on/off as well (without the need to access my Smartphone/computer), I designed this Smart Home Controller which handles the request via WIFI via direct API access (FritzBox and Fritz actuators) and via IFTTT and webhooks (Sonoff, Magic Light). The Arduino code is driven on an ESP32.
There are 16 buttons which can be assigned to various funtions. The device is driven by a lipo battery. The oled shows the battery voltage and the commited function.

Video Demonstration:
https://youtu.be/5h9x9Xk2k5M
https://www.youtube.de/5h9x9Xk2k5M
https://www.youtube.com/5h9x9Xk2k5M