Aschwin,

A RS-485 solution will be a LOT less expensive.  Take a look at SAE J1708
for a suitable design.  Read www.national.com's AN-915 "Automotive Physical
Layer SAE J1708 and the DS36277" for the pertinent information.

Unfortunatly, you will have to spend $49 to download the actual standard
from the SAE site -- but it does give you a head-start on your project.

..Eugene..

----- Original Message -----

Date:    Tue, 15 Dec 1998 15:03:45 +0100
From:    Aschwin Gopalan <gopalan@PHYSIK.UNI-KL.DE>
Subject: CAN bus anyone?

Dear PIClisters!

Has anybody used a PIC to connect to a CAN bus and is willing to share
experiences? What driver, does it work at all etc...

My application is a science device which will have a computer connected
to several (maybe 20) devices for data aquisition and control. Speed is =

not too important and the distance between the devices is small (about 4m=
 max.)

Or should I go for RS-485? Are there any standard protocols for addressin=
g
etc?

Or maybe I2C?

Well, I am thankful for any advice...

Bye and happy PICin=B4,

Aki