Use ARDUINO to control BMW car from Mobile Phone by WIFI

[neos_59491]

Hello,

Question : is it possible to connect by WIFI connection to arduino, arduino being OUTSIDE home (so without home router)

Project : I am trying to use an ARDUINO R4 to control my BMW car (open/close doors/windows, initiate motor ... see position by GPS of my car) from Mobile phone using wifi connection.

Current Situation : I have already made the technical part (connect car to Arduino using relay) and now I want to make the connection between my phone to the Arduino.
I have already tested MIt App Inventor 2 using Bluetooth connection but now I want to use WIFI.

I know that

• it is possible to connect to Internet Arduino using sim card (SIM800L),
• it is possible to create a web server on Arduino

But I want to know if it is possible to connect phone to Arduino using WIFI connection OUTSIDE (so not at home using router)

I saw the possibility to use Google Sheet as an "exchange platform" between Mobile phone and Arduino :

• from Phone to Arduino : update information on google sheet about the command pushed by phone (open/close ...) and retrieve this information on Arduino using SIM800L
• from Arduino to Phone : update information on google sheet about the situation of the car (open/close ...) and retrieve this information on phone using MIT Inventor

But as I want these connection to be immediate, I think it can not be correct as ARDUINO will need to connect to Google Sheeteach seconde to check if update of information has been made.

So is here another solution as a real web server with ARDUINO connected to internet not using an hme router (in order to have a public IP) ?

Thanks

[shiroyama]

Hi,
By connecting your car to the internet like this, unless you are an expert in cyber security, anyone with a bit of knowledge could control your car or know where you are at any given momemt. Which is a security risk.
Are you sure you want to do this ?

[sonofcy]

It's very hard to do for a reason. SECURITY.