Good quality cable needed

[NickMu]

I’ve been testing similar approaches to the suggested solution to RS485 or other parasite power systems and my results were not consistent enough especially when dealing with 5V power / data line and high current needed at the slave end. 12V setups are better but still not reliable enough for my power needs for the slave unit.

Regards,

Nick

[Ioannis]

You might also consider PoE that are cheap devices and use standard RJ-45 sockets.

Ioannis

[NickMu]

PoE is a nice choice but unfortunately my slave has space limitations and I must keep it to a minimal component count. My slave board cannot be larger than 1.5 square inches.
I’m hopping to get it done with one small PIC (PIC12F683 maybe) and one 8 pin RS485 chip (still WIP).

Regards,

Nick

[NickMu]

Here are the best two cables recommended by the manufacturer just in case someone might be interested:

http://www.hyperline.com/catalog/cab...c5e-p-io.shtml

http://www.hyperline.com/catalog/cab...sf2-a-pe.shtml

First is a four twisted pairs and the other is a two twisted pairs.

Regards,

Nick