Software dev here. I had a few classes about networks in school but I’m not too skilled with it. I recently got into building a home network as I will soon be moving in with my gf, and want to make a reliable internet setup for the both of us. Also just want to have a bit of fun doing this. I watched a few hours of videos on YouTube to figure this out, and made a small high level drawing of how I would like to do it. Does this make sense ? Will, for exemple, my main VLAN be able to talk with my home server ? Or my IoT devices be able to talk to Home Assistant on the server ? (The text on the drawing is mostly in French, I figured it’s generic enough to be understandable, tell me if you want more explanation)
Yes, that deployment plan makes sense. I have a similar setup at home, you'll need to configure separate SSIDs for the different VLANs. I would also recommend separate VLANs for the server devices and cameras, assuming those don't have wireless devices, no need for WiFi networks for those.
You'll need to configure rules on PFsense to allow (or block) traffic between your VLANs. For example, you can allow devices on your main network to any other network, but not allow devices on the IoT network to initiate traffic to any other networks.