Hello, Automation Engineer here!
I already implemented a few home automation projects using Home assistant app.
I can provide u a few pictures with the final results, the integration with the ORVIBO switch is super simple, I can't charge you much for it.
Allow me to talk a bit about one of my previous projects using Home assistant app. I installed the app in a raspberry with a touch screen integrated, had the whole thing programed to autoboot on the HA screen , used Sonoffs (15 of them ) to control light switches, gates and control the power of a few devices, also linked RING (a doorbell with a camera to record/take pictures of who ever ring it) also linked a BLE temp sensor (xiaomi sensor, very proud of this one, made a ESP32 gateway to convert BLE to MQTT). Made the rest of the usual integrations for the client, such as interface, spotfy, duckDDNS for remote access and a few other minor tweeks. Oh an also had the security and alarm system integrated and working with IFTTT for smarthphone notifications of the whole system. But the cherry of the cake, that gave this whole system a pretty face was the integration with Alexa to create automated routines and control of the devices USING VOICE COMMANDS!!
So, msg me back and I will send u pictures and videos of this previous work, eventualy the client decided to switch the main screen to a tablet, the whole system just look better on a table, but I still have a few great videos of the whole system working.