Waveshare 2-Channel RS485 and 1-Channel CAN Expansion Board Review - Review

Introduction to Waveshare 2-Channel RS485 and 1-Channel CAN Expansion Board

The Waveshare 2-Channel RS485 and 1-Channel CAN Expansion Board is a versatile and reliable HAT designed for Raspberry Pi enthusiasts looking to expand their projects' communication capabilities. This expansion board offers isolated RS485 and CAN channels, along with multiple protection circuits, making it an ideal choice for industrial automation, smart home projects, and more.

Key Features and Benefits

The Waveshare Expansion Board features a standard Raspberry Pi 40PIN GPIO extension header, ensuring compatibility with various Raspberry Pi models. The 1-Channel CAN interface utilizes the MCP2515 controller and CAN transceiver, enabling seamless SPI to CAN conversion. Additionally, the 2-Channel RS485 interface employs the SC16IS752+SP3485 dual-chip combination for efficient SPI to RS485 conversion.

Enhanced Protection and Stability

One of the standout features of this expansion board is its onboard power conversion circuit, supporting a wide voltage range of 8~28V. This allows users to power both the Raspberry Pi and the expansion board simultaneously, simplifying the setup process. The onboard unibody power supply isolation ensures stable voltage output without the need for an extra power supply for the isolated terminal, enhancing reliability and convenience.

Robust Protection Circuits

The Waveshare Expansion Board is equipped with various protection circuits, including onboard TVS (Transient Voltage Suppressor), resettable fuse, and protection diodes. These components effectively safeguard against surge voltage, transient spikes, over-current, and over-voltage scenarios, enhancing the overall durability and robustness of the board. Moreover, the onboard 120Ω terminal resistor, configurable via jumper, simplifies the connection and enhances signal integrity.

Convenient Design and Connectivity

With onboard terminals, pin headers, and breakout SPI control pins, the Waveshare Expansion Board offers convenient connectivity options for users. The unibody digital isolation feature isolates signals effectively, ensuring reliability and stability while minimizing power consumption. Whether you are a hobbyist or a professional developer, this expansion board provides a user-friendly interface for seamless integration with your Raspberry Pi projects.

Waveshare 2-Channel RS485 and 1-Channel CAN Expansion Board Review

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