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RS485 CAN HAT for Raspberry Pi Overview The RS485 CAN HAT will enables your Pi to communicate with other devices stably in long-distance via RS485/CAN functions. Features Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards CAN function, onboard CAN controller MCP2515 via SPI interface, onboard transceiver SN65HVD230 RS485 function, controlled via UART, half-duplex communication, supports automatic TX/RX control without programming, onboard transceiver SP3485 Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit for RS485 transceiving, lightningproof & anti-electrostatic Reserved control pins, allows to work with other control boards Comes with development resources and manual (examples in wiringPi/python) Specifications Operating voltage: 3.3V CAN controller: MCP2515 CAN transceiver: SN65HVD230 485 transceiver: SP3485 Dimension: 65mm x 30mm Mounting hole size: 3mm Pinouts PIN Raspberry Pi (BCM) DESCRIPTION 3V3 3V3 3.3V Power GND GND Ground SCK P11 / SCLK SPI clock input MOSI P10 / MOSI SPI data input MISO P9 / MISO SPI data output CS P8 / CE0 SPI chip selection INT P25 Interrupt RXD P15 / RXD RS485 UART receive TXD P14 / TXD RS485 UART transmit RSE P4 RS485 TX/RX control (auto control by default, some soldering is required to enable manual control), high for TX, low for RX