Waveshare Isolated RS485 CAN HAT (B) for Raspberry Pi
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SKU: SBCD-1374
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Waveshare Isolated RS485 CAN HAT (B) for Raspberry Pi

₹2,229.00 (Inclusive of all taxes)
Out of Stock

The Waveshare Isolated RS485 CAN HAT (B) expands Raspberry Pi series boards with robust, isolated dual-channel RS485 and a single-channel CAN interface. Utilizing SPI for communication, this HAT provides reliable industrial communication with enhanced protection features, powered by an 8-28V external supply.

Features

  • Standard Raspberry Pi 40PIN GPIO compatibility for Pi series boards.
  • Isolated 2-Channel RS485 (SC16IS752 + SP3485) and 1-Channel CAN (MCP2515) interfaces.
  • Wide 8~28V DC power input, capable of powering the Raspberry Pi concurrently.
  • Integrated unibody power supply and digital isolation for enhanced reliability and noise immunity.
  • Multiple onboard protections including TVS, resettable fuse, and protection diodes.

Out of stock

Description

The Waveshare Isolated RS485 CAN HAT (B) is engineered to provide Raspberry Pi users with robust, reliable, and isolated industrial communication capabilities. This HAT features dual-channel RS485 and a single-channel CAN interface, making it an ideal solution for applications requiring secure data exchange in electrically noisy environments.

Equipped with an MCP2515 controller for CAN and an SC16IS752 UART expansion chip coupled with SP3485 transceivers for RS485, the HAT ensures high-performance communication. Its integrated unibody power and digital isolation protect the Raspberry Pi from voltage spikes, ground loops, and electrical interference. Furthermore, the wide 8-28V DC input range not only powers the HAT but can also supply power to the connected Raspberry Pi, simplifying power management in deployed systems. Onboard protections such as TVS, resettable fuses, and protection diodes ensure system stability and longevity.

Key Features

  • Standard Raspberry Pi 40PIN GPIO extension header, supports all Raspberry Pi series boards.
  • Integrates MCP2515 CAN controller and CAN transceiver for 1-channel CAN communication via SPI.
  • Equipped with SC16IS752 UART expansion chip and SP3485 RS485 transceiver for 2-channel RS485 communication via SPI.
  • Onboard power conversion circuit supports 8~28V wide voltage input and can simultaneously power the Raspberry Pi.
  • Features unibody power supply isolation, providing stable isolated voltage without requiring external isolation modules.
  • Includes unibody digital isolation to ensure reliable, jam-proof signal transmission with low power consumption.
  • Integrated TVS (Transient Voltage Suppressor) for surge voltage and transient spike voltage suppression, offering lightning-proof and anti-electrostatic capabilities.
  • Incorporates resettable fuse and protection diodes for stable current/voltage output, over-current/over-voltage protection, and improved shock resistance.
  • Selectable 120Ω terminal resistor via jumper for proper RS485 bus termination.
  • Provides both terminal blocks and pin headers for convenient and flexible connections.
  • Breaks out SPI control pins, allowing for interfacing with other host control boards.

Applications

  • Industrial automation and control systems.
  • Building management systems (BMS).
  • Data acquisition in harsh electrical environments.
  • IoT gateway for industrial sensors and actuators.
  • Automotive diagnostics and vehicle communication (CAN bus).
  • Remote monitoring and telemetry solutions.

Technical Specifications

Operating Voltage3.3V
External Power SupplyDC 8~28V
Expanded Interface2-Ch RS485 + 1-Ch CAN
Communication InterfaceSPI
CAN ControllerMCP2515
CAN TransceiverSIT65HVD230DR/SN65HVD23D
CAN Baud Rate≤1Mbps
UART Expansion ChipSC16IS752
RS485 TransceiverSP3485
RS485 Baud Rate300~921600 bps

Frequently Asked Questions

What Raspberry Pi boards are compatible with this HAT?

This HAT is designed with a standard 40PIN GPIO extension header, ensuring compatibility with all Raspberry Pi series boards, including the Pi 4, Pi 3B+, Pi Zero W, and newer models. It leverages the SPI interface for all communication, making integration straightforward across the ecosystem.

What are the key isolation features of this HAT?

The HAT incorporates unibody power supply isolation, providing stable isolated voltage, and unibody digital isolation for reliable, jam-proof signal transmission. These features protect the Raspberry Pi from voltage spikes, ground loops, and electrical interference often encountered in industrial environments, enhancing system robustness.

How does the HAT manage its power supply?

The HAT features an onboard power conversion circuit that accepts a wide DC input range of 8V to 28V. This flexible external power input can simultaneously supply power to the Raspberry Pi itself through the GPIO header, simplifying wiring and power management in embedded deployments.

What communication protocols does this HAT support?

It supports two channels of RS485 communication with configurable baud rates up to 921600 bps, utilizing the SC16IS752 UART expansion chip and SP3485 transceivers. Additionally, it provides one channel of CAN communication, managed by the MCP2515 controller, supporting up to 1Mbps, both interfaced via SPI.

Package Includes

  • 1 x Waveshare Isolated RS485 CAN HAT (B) For Raspberry Pi, 2-Ch RS485 and 1-Ch CAN, Multi Protections

Additional Information

Weight 0.06 kg
Dimensions 8 × 7 × 3 cm

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