Mcp2515 | Proteus Library Link

void setup() Serial.begin(9600); SPI.begin();

: In simulation, you do not need a physical CAN transceiver. The MCP2515 model can loopback internally or communicate via a direct wire between two MCP2515 models’ CANH/CANL pins (but most third-party models only support loopback mode for simulation stability). mcp2515 proteus library link

To simulate the MCP2515, you need to download a specific Proteus-compatible library file and place it in the software's internal directories. Download the Library Files void setup() Serial

(If you’d like, I can search and fetch a specific direct link now.) void setup() Serial.begin(9600)

: Move the extracted .LIB and .IDX files into this folder.

The CAN transceiver (usually available in default Proteus libraries) required to convert digital signals to differential CAN signals.