Parts have arrived (the MCP2515 module took a while from China, my local supplier eventually admitted they didn't have stock a week after I placed my order).
It's all wired up with jumpers, ready to start work on the software.
I'm trying the SparkFun CAN-bus library to start with, but I'm not using a standard Arduino, or their shield, so I had to write some #defines to re-map the pins.
// Pro Micro pin adjustments (dunno what to do with the LED...) // to work with SparkFun library #define MCP2515_CS A,7 #define MCP2515_INT A,6 #define LED2_HIGH A,10 #define LED2_LOW A,10
Scope on the CAN output to see if anything is happening
Wire up to my car to see if it can read anything