Serial communications (across a wire) in a car -- best practices?

Using Arduino Networking, Protocols, and Devices
1

This particular project involves having the Arduino mounted in the trunk of my car and a serial display on the dash (most likely will be a 4D display). Just wondering what kind of wiring I should use. I already have a CAT5 wire in place and have a free set of twisted pairs. Do you think that will be sufficient for this or should I look at something that is better insulated against noise?

I estimate the cable run to be between 5~10 feet

Thanks
GB

2

google for rs485 it is more noise resistant than rs232

What kind of speeds are you talking about?

3

What kind of speeds are you talking about?

Hopefully at or under the speed limit for the roads being driven on. :smiley:

4

retrolefty:

What kind of speeds are you talking about?

Hopefully at or under the speed limit for the roads being driven on. :smiley:

heheh

I'll just be updating a display so I don't think it will have to be terribly high data speed. I would start out with 9600 and go up from there if it's not sufficient

5

Either RS485 (2 wires + GND) or LIN (1 wire + GND) should do nicely.

LIN has a 19.2kbps limit.

Rob