RS485 Expansion Board CAN Module UART Communication Module for Raspberry Pi 4B / 3B+ / Zero W

RS485 Expansion Board CAN Module UART Communication Module for Raspberry Pi 4B / 3B+ / Zero W

The Raspberry Pi boards in the picture are for reference only, the actual package does not contain any Raspberry Pi boards!!!

Features:

• The RS485 CAN Expansion Board will enable your Pi to communicate with other devices stably over long distances via RS485/CAN functions

• Standard Raspberry Pi 40-Pin 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, lightning-proof & anti-electrostatic

• Reserved control pins, allow to work with other control boards

Specification:

• Operating voltage: 3.3V

• CAN controller: MCP2515

• CAN transceiver: SN65HVD230

• 485 transceiver: SP3485

• Dimension: 65*30mm

• Mounting hole size: 3.0mm

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

Package includes:

• 1 x Expansion Board

• 1 x Screws Pack