Either your devices and hub don't need to be exposed to the net (so why are you even using a router connected to the web?), or they do.
If they do, it's because that's how you control them, via the web. If that's the case, it doesn't matter what network your phone is on; command and control is done via the web.
Now, in terms of infecting each other, sure. But the point is to keep my data devices and such separate from my IoT devices. Yes, the whole IoT infrastructure may get infected and need a purge, but my goal is to keep infection of those from getting, say, my banking information. And yes, it assumes that the command and control app is reasonably secure, but that's a whole different issue (and one reason why I would rely on Amazon or Alexa as a hub, and not some random no name company).
I'm curious if you have suggestions for a hackable home automation/IoT hub that I can use without giving it access to the internet. I'm happy to DIY anything that doesn't deal with mains voltage.
[0]: https://www.home-assistant.io/ [1]: https://hubitat.com/
Homebridge: https://homebridge.io HOOBS: https://hoobs.org
it should be automated, you have controls in the house that trigger actions, ie a door opens, or a light switch is triggers.
If I have to use my phone to control it, I have failed at automation
I have a small arcade in my basement and the ability to control the lights from my phone would be way better than using the wall switch, mostly because of outlet placement and the fact the switch has to stay on.
My living room only has one switched outlet and it is the one closest to the switch. The lights across the room have to be manually controlled.
I've done some research into wifi controlled outlets and I have some very old radio controlled ones but I need more. Do you have any suggestions for hackable wifi plugs that do not connect to the internet? Maybe something that connects to a hub?
My dream would be something where I can make my own sensors and talk over wifi to outlets that are UL listed, without involving the internet. I'm happy to DIY anything that doesn't interact with mains voltage.
Zigbee/Zwave is controlled via Nortek USB interface connected to a rPI
Though I do have a couple of Shelly Devices, and some custom ESP8266 things