SparkFun Forums

[MIODAND4]

Hi,

I am trying to have two arduinos talk to each other over a CAN bus. For that, I have 2 Arduino UNOS, with 2 CAN bus shields connected to each other. I loaded the demo example for reading in one, and the one for writing in the other one, but they are not communicating with each other.

Any idea on what can be failing?

Cheers!!

[paulvha]

Have you connected CAN-H to CAN-H and CAN-L to CAN-L ? Some people have been crossed them (as one would do with TX and RX). Also look at http://wiki.seeedstudio.com/CAN-BUS_Shield_V1.2/. It is a different board than Sparkfun, but basics are the same.