(1)Based on 40pin GPI0 interface, suitable for series motherboard(2) CAN function, using the SPI interface CAN controller MCP2515, with transceiver SN65HVD230(3) With RS485 function, using UART control, half-duplex communication, support automatic switching transceiver state without program control, transceiver is SP3485(4) Reserved control interface, convenient for other controllers to control(5) On-board TVS (transient voltage suppression tube), RS485 communication can effectively suppress surge voltage and transient spike voltage in the circuit, anti-staticThis product is a RS485 and CAN expansion board designed for , which can solve the problem that does not have 485 and CAN interface; at the same time, it can make and other devices maintain normal communication.Product parameters.Operating voltage: 3.3VCAN controller: MCP2515CAN Transceiver: SN65HVD230485 Transceiver: SP34854.Pin FunctionINT: Interrupt output : SPI chip select signal: SPI clock inputMOSI: SPI data input: SPI data outputRXD: RS485 serial receiveTXD: RS485 serial transmit.RSE: RS485 receive and transmit settingsColour:blackMaterial:PCBSize:65.15 x 30.1MMPackage Contents:1 x RS485 CAN HAT boardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.