Hi all.
I want to use some sensors using CANbus interface. I noticed that there are simple interface ICs for electrical signals but what about the protocol and such. There are even larger chips, but are they needed.
By the way, searching for "can bus" is useless, I find results as "able"
You will also find CAN bus info at avrfreaks, like this one http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=117257
A shield, https://www.sparkfun.com/products/10039
A project, http://www.openhardwarehub.com/projects/40-Arduino-CAN-BUS-OBD-Gas-Gauge
Tutorial, http://www.jayconsystems.com/tutorial/canbus/
lmgtfy yeah, a familiar website somehow. First link it found said that there are problems with some shields?
The Seeduino CAN-BUS Shield library does not work properly, and neither do the examples
You need a protocol controller chip (eg the MCP2515) and a line transceiver chip (eg MCP2551). Sometimes they are one and the same but usually separate ICs.
Also the controller can often be found embedded in a CPU, for example the Arduino Due has two of them and can therefore communicate with 2 CAN networks.
Rob
Don't mean to promote my kickstarter project, but check out canexIO project on Kickstarter.com, it is a perfect example.