Hello,

I am currently working on a project where two PIC's on two separate boards need to communicate serially over a distance of about 5 metres. I am looking to use UTP Cat5 cable to connect them together. As well as data, this cable will also carry the power supply from board 1 to board 2.

For noise immunity, is it best to use one of the twisted pairs for the power supply and another for the data, or will it not matter too much?

Thanks,

Andy Wood