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.

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.

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.

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RS485 CAN HAT for Raspberry Pi 5/4B/3B+/Zero 2W, Transceiver SIT65HVD230DR | Onboard CAN Controller MCP2515 via SPI Interface, Long-Distance Communication via RS485/CAN Function

Product ID: 154707007

Details

Brand
waveshare
Hardware Interface
Serial
Item Weight
0.02 kg
Product Dimensions
1.97"L x x
Style
Classic

⚡Onboard TVS for surge & spike protection

📡Stable long-distance RS485/CAN comms

🔧Plug & play SPI/UART interface with auto TX/RX

€ 35.49

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Description

🚀 Elevate your Pi’s communication game — connect farther, safer, smarter!

EFFORTLESS INTEGRATION CONTROL - Auto TX/RX control via UART and SPI interfaces means zero hassle, zero extra coding.
SEAMLESS LONG RANGE CONNECTIVITY - Empower your Raspberry Pi with robust RS485 and CAN communication up to industrial-grade distances.
DEVELOPER READY WITH FULL RESOURCES - Includes comprehensive manuals and code examples in wiringPi and Python to accelerate your build.
UNIVERSAL RASPBERRY PI COMPATIBILITY - Works flawlessly with Pi 5, 4B, 3B+, Zero 2W and more — future-proof your IoT ecosystem.
BUILT IN SURGE ELECTROSTATIC DEFENSE - Protect your projects with onboard TVS components that guard against voltage spikes and lightning strikes.

The RS485 CAN HAT by Waveshare transforms your Raspberry Pi into a powerful communication hub, enabling stable long-distance data exchange via RS485 and CAN protocols. Featuring the MCP2515 CAN controller and SIT65HVD230DR transceiver, it supports automatic half-duplex UART control with the SP3485 transceiver. Its onboard 120Ω terminal resistor and TVS protection ensure reliable, lightning-proof operation. Compatible across multiple Pi models and backed by detailed developer resources, this HAT is engineered for professional-grade IoT and industrial applications.

Specifications

ASIN	B07VMB1ZKH
Best Sellers Rank	#466 in Single Board Computers (Computers & Accessories)
Brand	waveshare
Compatible Devices	Raspberry Pi
Customer Reviews	4.4 4.4 out of 5 stars (115)
Hardware Interface	Serial Interface
Item Dimensions L x W x H	1.97"L x 1.57"W x 0.79"H
Item Weight	0.02 kg
Manufacturer	Waveshare
Mfr Part Number	RS485 CAN HAT for RPI
Model Number	WAV_14882
Number of Items	1
Operating System	Ubuntu
Style Name	Classic
UPC	750904070738 778365986375

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€ 35.49

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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