Here's SparkFun's CAN bus shield: https://www.sparkfun.com/products/10039 https://www.sparkfun.com/products/10039. It's not cheap, but it's from SparkFun so it

Here's SparkFun's CAN bus shield: https://www.sparkfun.com/products/10039 https://www.sparkfun.com/products/10039. It's not cheap, but it's from SparkFun so it's at least pretty in red. :) And, to be fair, it has a few nice features besides the CAN interface itself (SD card holder, LCD interface, on-board joystick). The product comments mention this library for the software side: http://code.google.com/p/canduino/ http://code.google.com/p/canduino/.