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