Aurdino to unity android

I don’t know if this is the right thread to post this, but I am trying to make a android vr project I am working on because the oculus quest is like 300. I am making aurdino controllers for the vr and I have already made a really bad beat saber rip off. I just need a way for aurdino to communicate with android phone. I got aurdino to work with pc but do you know if theres a way to connect aurdino to a game thats on android device. If there is how should i go about it.

can buy ready plugin, Unity Asset Store - The Best Assets for Game Making
(some of those mention android+bluetooth support)

I already know how to connect it to pc is there a way to communicate aurdino using mobile

is there a free plugin or a way to connect aurdino to unity via bluetooth.

Some of the mobile plugins mentioned in the first reply are free.

the free ones are for pc is there for android via bluetooth

They all claim to work on Android as far as I can tell.

can u tell me which ones i dont see any that work with android and are free

Yeah, it looks like you are correct. You’ll need to purchase an asset. Otherwise, you might want to start with an existing project, outside of Unity, and get that working first https://create.arduino.cc/projecthub/projects/tags/android The first project uses UDP which Unity (C#) supports.