Question is, how do I control it with a mobile app without bluetooth and wifi, but possibly through it acting as an access point? (I know it sounds silly)
I have seen videos where people make apps to control their microcontroller (mainly arduino) via bluetooth. I was wondering whether I could do the same by utilizing the capabilities of the ESP without the need for bluetooth.
I know that you can control it wirelessly through things like MQTT, and even make apps send requests via MQTT, but that requires WiFi.
Under the hypothetical scenario that my wifi is down, how would I control my ESP with the use of an app?
I was thinking if I could send data to it when it was acting as an access point (again without wifi or bluetooth).