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RS485 CAN HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/Zero W/WH,Allow Long-Distance Communication via RS485/CAN Function Onboard CAN Controller MCP2515 via SPI Interface Transceiver SN65HVD230

RS485 CAN HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/Zero W/WH,Allow Long-Distance Communication via RS485/CAN Function Onboard CAN Controller MCP2515 via SPI Interface Transceiver SN65HVD230

Q: The unit i received has a 12mhz crystal, the unit in the picture and in the docs has an 8mhz crystal. please update docs?

Hi, Thanks for your suggestion, we will update it.

Q: I want to be able to monitor and transmit CAN transmission on my Snapmaker 3D printer with a PI4B. Will this work? Do I need anything else?

If you connect this board to your Pi and connect the board to a properly terminated CAN bus to your printer, you should be able to use the Linux SocketCAN interface to talk to the printer. I looked the Snapmaker and there is some sort of CAN hub you can use to make a connection. Passively monitoring is more tricky - that's best done with a specific tool such as a Kvaser analyzer or a logic analyzer if you pick off the CAN signals after they have been converted from CANH/CANL by a logic transceiver. The CAN board does support direct connection to the CAN network, and there is a lot of sample code on the web on how to bring up SocketCAN with ifConfig on it.

Q: Is there a C/C++ api for this thing? I'm not getting this obsession with using Python.

You use Linux SocketCAN. Once Linux brings up the interface with ifConfig, you can use regular BSD Socket Calls from wherever you like.

Product ID: 512455030

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Details

Brand
Waveshare
Hardware interface
Serial
Product dimensions
5L x 4W x 2H
Style
Modern
Item weight
0.02 Kilograms

⚡Onboard TVS for surge & lightning protection

📡Stable long-distance RS485/CAN comms

🔧Plug & play with Raspberry Pi models

Description

🚀 Elevate your Raspberry Pi’s communication game with industrial-grade RS485 CAN power!

UNIVERSAL PI COMPATIBILITY - Works flawlessly with Raspberry Pi 4B/3B+/3B/2B/Zero series for ultimate flexibility.
DEVELOPER READY WITH RESOURCES - Includes wiringPi/python examples and reserved pins for expansion—future-proof your builds.
EFFORTLESS INTEGRATION CONTROL - Automatic TX/RX control via UART without extra programming—get started faster.
SEAMLESS LONG RANGE CONNECTIVITY - Empower your Pi with robust RS485/CAN communication up to industrial standards.
BUILT IN SURGE ELECTROSTATIC DEFENSE - Protect your projects with advanced TVS circuitry—lightning-proof and anti-static.

The RS485 CAN HAT by Waveshare transforms your Raspberry Pi into a powerhouse for stable, long-distance RS485 and CAN communication. Featuring the MCP2515 CAN controller and SN65HVD230 transceiver, it supports half-duplex UART control with automatic TX/RX switching. Its onboard TVS ensures robust protection against voltage surges and electrostatic shocks, making it ideal for industrial and IoT applications. Compatible across multiple Pi models, it comes with development resources and reserved pins for seamless integration and expansion.

Specifications

Brand	Waveshare
Product Dimensions	5 x 4 x 2 cm; 18 g
Item model number	WAV_14882
Manufacturer	Waveshare
Colour	RS485 CAN HAT for RPI
Processor Brand	VIA
Wireless Type	802.11b
Operating System	Ubuntu
Are Batteries Included	No
Item Weight	18 g
Guaranteed software updates until	unknown

Have a Question? See What Others Asked

The unit i received has a 12mhz crystal, the unit in the picture and in the docs has an 8mhz crystal. please update docs?

I want to be able to monitor and transmit CAN transmission on my Snapmaker 3D printer with a PI4B. Will this work? Do I need anything else?

Will this work with a raspberry pi pico w

Is there a C/C++ api for this thing? I'm not getting this obsession with using Python.

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