I am trying to get a float value input through serial, but it's not working. I try a float value in Arduino and setup float value in 3dgs, but doesn't work. it only seems to work when both of them are setup as bytes.

Any idea how I can get this to work? I thought of converting the float to it's byte values and recombining them in lite-c after reading them in, but I don't know how to do this.
It would be a lot easier to just read the float directly.

If I undestood your problem right, you can do this:

float x;
...
char byte1 = ((char*)(&x))[0];
char byte2 = ((char*)(&x))[1];
char byte3 = ((char*)(&x))[2];
char byte4 = ((char*)(&x))[3];

And you can write into the bytes of your floats accessing them the same way.

I can't seem to get that to work. it gives me 0 for each of those bytes, but I am trying to call them in a digits panel.
Is there a way to verify that? and I'm not sure how to recombine them back. Would you be able to show me the code please.

I've also tried memcpy but not sure if it's working either
byte bytez[4];
float f = 852140;
var fa = f;
memcpy( bytez, &f, sizeof(f) );

I tried your code with memcpy and for me it works. Try this:

I get 192,10,80,73.

When displaying your bytes in a digits panel, note that digits only accept vars. So you should always use vars to set their value to the value of your byte and then display the vars.

I was wondering about that, but wasn't sure.
thanks, that definitly helps break it down, but how do I get them back into a float. I've heard that a union might work for that, but can't find a good example.

Isn't that obvious? If you can transform a float to bytes like this:
memcpy( bytez, &f, sizeof(f) );
Then you can do the opposite thing like this:
memcpy( &f, bytez, sizeof(f) );

I didn't think it would be that easy. I hoped it would be but whenever I tried looking it up, nobody was giving memcpy as an example of how to recombine it.

thanks for the help. I'm not used to this type of thing.