Just make it open. Homeassistant is opensource, controlls a bunch of different gadgets/smartdevices/switches/..., gets data from a bunch of different gadgets/s

Just make it open. Homeassistant is opensource, controlls a bunch of different gadgets/smartdevices/switches/..., gets data from a bunch of different gadgets/sensors/smart devices, and has a bunch of apps using it's API. Honestly, I only buy stuff, if I can integrate it into homeassistant (without using the devices cloud services)... sometimes that means soldering + flashing tasmota, but in the end, I get it to work.