The problem
I have an array of Wi-Fi cameras at a location very distant from my wireless router. I have installed an extender as near to the cameras as possible, but the connection is very slow (I believe the signal travels over 100 ft). At times, I also have a hotspot device which is much nearer and much faster. Unfortunately, these cameras (Wyze) can only be configured to connect to one wireless network at a time and so they have no automatic switching capability like smartphones.
Proposed solution
I would like a device that is able to connect to the extender (always available) and the hotspot (when available), then repeat the signal (whichever is stronger; the hotspot) with a single SSID - this way it appears to the cameras as just one network. I am unsure if this would cause issues due to the inconsistent IP addresses.
I have not managed to find such a device searching the web, the closest I can think to do is to make my own “custom” router with e.g. a Raspberry Pi. Before I plunge into that, is there a pre-existing device like this?
Thanks for your time.