Home Assistant Linux OS - Connected with Ethernet cable - can't connect devices on WIFI

Hey all, newbie here. I have my HA set up on my Linux computer – I was able to do it with the Pi, too, but I just prefer my Linux desktop. I have my network connected with an Ethernet cable. It is possible for the system to detect devices that are connected to another wireless network? Example, I have a TV connected to the same network as my HA and it was immediately discovered and I could add it to my dashboard. I have another wireless device (a Pi used as a display for a monitor) that I want to connect to. Or any other wireless devices. Is this possible? The wireless network and wired connected are completely separate. I hope that makes sense. Thanks for your help.

Hi there!

I’m not sure if you’d will help you much but I can explain how my network is configured a little and extra steps to get devices available which may help in the understanding somewhat.

It may help if you explain slightly better your two different networks. I’m assuming you have maybe two subnets in use?

My router does all my dhcp and address reservations and every device has a reserved ip including smoke alarms, lights, thermostats etc, regardless of if they connect by ethernet or WiFi.

As I run haos on a mini PC, first off the mini PC needs it’s ip, (hardware Nic in the box) the vmos (proxmox os) needs it’s own ip, then the haosvm (virtual machine) needs it’s own ip, so consecutively they have say 10.0.0.5, 10.0.0.6, 10.0.0.7 all for one box, to begin with.

Once the haos vm is up and running and you can begin setting things up and detecting/adding devices on your network some things for me don’t appear immediately.

For my Google cctv I needed the Google nest integration (or maybe addon, I forget, but two different things) and had to become a ‘developer’ to essentially write an app and use Google api to access these, but once done they all show up in the haos devices.
For govee lights I needed to use mosquito mqtt & mqtt integrations with a govee api to get these devices to show up and added into the haos system. Both these examples are wireless devices on the same subnet as the router and mini PC running all the haos stuff though.

If you’re using some method of multiple subnets or routers etc then you’ll need to somehow bridge them together, I would imagine, so they can talk to each other. This is where (ad u understand it) things like vlans come in very handy as you can virtually separate groups of devices into separate networks but the router can talk to all devices and pass their traffic over to the server but the groups can’t talk to each other directly.

I guess it just depends on how you have things configured and if they could be done simpler in your case or something?