have similar problems than above. I use the sketch from post #11. I use the Nirem CAN interface. If I set it to 500 kbs and 8 MHz and LOOPBACK Mode I get initialized OK, and send message OK, but do not receive anything. If I set it to 125 kbs I get an iitialization error.
As some wrote low baudrates are not working fine with 8 MHz cristal. I bulld up a circuit with original MCP2515 DILand 16 Mhz cristal. Here I get and send message error with the same sketch. I think it is clear that I changed the initializtions string acording the cristal. Adrduino board isoriginal Arduino UNO with the SMD Arduino.
connections are CS=10, SO =12, SI=11,SCK=13,INT=2
Thanks for any help or hint