1、An expansion board with CAN and RS485 functions specially tailored for Raspberry Pi. 2、Based for Raspberry Pi 40pin GPIO interface, suitable for Raspberry Pi series motherboards. 3、This expansion board has CAN function and uses Serial Peripheral Interface CAN controller MCP251 4、With the transceiver SN65HVD230, with RS485 function, using UART control, half-duplex communication. 5、Supports automatic switching of the transceiver status without program control. The transceiver is SP3485 onboard TVS (transient voltage suppression tube). 6、RS485 communication can effectively suppress the surge voltage and transient spike voltage in the circuit, prevent thunder and static electricity, and reserve the control interface to facilitate the control of other controllers. 1 x Expansion Board1 x Screw Package Item Type: Expansion BoardCAN Controller : MCP2515Interface: For Raspberry Pi 40Pin GPIOSuitable:For Raspberry Pi series motherboard