I dont have any requirements regarding the speed, so I can use a quite low baudrate. Very small amount of data.

The wires is just random ones. approx. 0.5mm diameter. not copper. not shielded.

Im thinking, is the limit between 0-1 meter, or is it possible to reach up to ten or even 20?

I am not asking for a precise value, but more of what you think about it?!

Im guessing that, because you asked for what wire/speed I use, that the limit is around 3, or even below?

Thanks for your time!

edit:

Now I see that I forgot to write the length I needed in my previous post..

Sorry about that!

3 meters is it.