Raspberry Pi RS485 CAN Expansion HAT Board Dual CAN Interface

This product features an expansion circuit with two CAN interfaces and one RS485 interface, supporting user-defined baud rate communication. It comes with an onboard digital isolation chip and integrated isolation power supply, ensuring stable isolation signal and voltage without requiring additional power supply for the isolation terminal. With TVS protection, it offers high reliability, strong anti-interference capability, and low power consumption. Additionally, the product includes a DC power input interface circuit, enabling simultaneous power supply for the module and the Raspberry Pi. We also offer Raspberry Pi demo codes for your convenience.

Features

• lAdopt CAN controller MCP2515 and CAN transceiver SN65HVD230DR dual-chip combination scheme
• lOn-board dual chip solution, supports 2 channels CAN interface communication, only one module can be used for CAN transceiver test on Raspberry Pi
• lOn-board digital isolation chip, making signal isolation communication safer, more stable, and stronger in anti-interference
• lOnboard SM24CANB (transient voltage suppression tube), anti-static and transient peak voltage
• lThe onboard slide switch can switch the signal working level of 3.3V/5V for the module
• lEach interface is equipped with a 120Ω terminal resistor, which can be set and enabled through the slide switch
• lThe onboard power conversion circuit supports a wide range of DC voltage power supply from 7 to 28V, and can supply power to the Raspberry Pi motherboard at the same time
• lOn-board pin header and terminal two wiring methods, more convenient wiring
• lIndependently lead out the SPI control interface, which is convenient for connecting to main control boards such as STM32/Arduino

Product parameters

Resource Profile

⒈ Leads to 2.54mm pin header control interface

⒉ External DC power input terminal

⒊ power chip TPS54331DR

⒋ Slide switch: CAN0 120 ohm resistance selection

⒌ CAN0 signal terminal

⒍ Slide switch: CAN1 120 ohm resistance selection

⒎ CAN1 signal terminal

⒏ Slide switch: RS485 120 ohm resistance selection

⒐ RS485 signal terminal block

⒑ DC5V isolated power module

⒒ Power Indicator

⒓ Slide switches: signal level selection

⒔ Slide switch: UART signal pin switching

⒕ SP3485E chip

⒖ 8-bit DIP switch: two groups of CAN chip selection and interrupt pin selection

⒗ Signal isolation chip π163M31

⒘ CAN transceiver chip SN65HVD230DR

⒙ Raspberry Pi 40Pin female socket

⒚ CAN bus controller chip MCP2515

WIKI

RS485-Dual-CAN-I

Package Contents

1. RS485-Dual-CAN-I x 1
2. Accessory Pack

12

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