RS485 CAN HAT for Raspberry Pi

The RS485 CAN HAT will enable your Raspberry Pi to communicate with other devices stably in long-distance via RS485/CAN functions. Features

* Standard Raspberry Pi 40-pin GPIO header

* 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 suppresses surge voltage and transient spike voltage in the circuit for RS485 transceiving, lightning-proof & anti-electrostatic

* Reserved control pins, allows working with other control boards

* Comes with development resources and manual (examples in wiringPi/python)

Resources

* Product Wiki

Specifications

* Operating voltage: 3.3V

* CAN controller: MCP2515

* CAN transceiver: SN65HVD230

* 485 transceiver: SP3485

* Dimension: 65mm x 30mm

* Mounting hole size: 3.0mm

Pinouts

PIN RPI (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**), high for TX, low for RX

**some soldering is required to enable manual control