I tried using an old optimum router to run a local network. It doesn't need internet, just want to be able to access a few arduinos wirelessly through the network. The optimum router has a troubleshooting guide that pops up when I connect to it through my phone to help you install the internet cable, which would be an issue for the arduino trying to connect to it.
Does anyone know a way around this, or if there is a really cheap option on amazon that i could buy?