Recently I had to put a camera where I had neither, ethernet nor wifi. So I took a #powerline adapter and bought a "Gembird ICAM" because I found it for around 30 €. (You can find this thing for anything between 30 and 300 €) and spent - I don't know - maybe three hours or so to get it working with #homeassistant via... #go2rtc. Not via #ONVIF Not #PTZ