The shield integrates an MCP2515 CANBUS chip on the shield and has a CAN-BUS transceiver function. With an on-board DB9 and CAN-BUS connector you can choose a suitable port according to your host device.

There is also an integrated MicroSD socket for data storage - a perfect solution for data logging applications.

What is Canbus?  Controller Area Network (CAN bus) is a vehicle bus standard designed to allow microcontrollers and devices to communicate with each other in applications without a host computer. It is a message-based protocol, designed originally for multiplex electrical wiring within automobiles, but is also used in many other contexts.

• Supports standard frame, extended frame transmitting and receiving
• Supports two reception methods: Rotational and interrupt detection
• Supports UART, i2C and DB9 terminal interfaces
• Supports SD card data storage
• Supports Arduino mainboard power supply or DB9 power supply (Switch)

• Chip: MCP2515
• Power supply: 3.3 ~ 5V Arduino board power supply or DB9 interface power supply
• Dimension: 76x54x19 (mm)/ 2.99x2.12x0.75 inches
• Weight: 40g

• Wiki (CAN-BUS Shield V2 (SKU: DFR0370))
• Related Documents 

• CAN-BUS Shield V2.0 x1
• 8-Pin header x1