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waveshare 2-channel isolated rs485 expansion hat for raspberry pi sc16is752+sp3485 solution with multi onboard protection circuits logo

Waveshare 2-Channel Isolated RS485 Expansion HAT For Raspberry Pi SC16IS752+SP3485 Solution With Multi Onboard Protection Circuits Review

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Excellent

Revainrating 5 out of 5  
Rating 
5.0
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Description of Waveshare 2-Channel Isolated RS485 Expansion HAT For Raspberry Pi SC16IS752+SP3485 Solution With Multi Onboard Protection Circuits

Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards Adopts SC16IS752+SP3485 dual chip combination, converts SPI to RS485, data rate up to 921600bps. Allows transceiving data manually or automatically, configured by DIP switch Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, llgthningproof & anti-electrostatic. Onboard auto-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance. Onboard LEDs for indicating the power and transceiver status Breakout SPI control pins, for connecting with host control boards like Arduino. Comes with development resources and manual (examples in C and Python)

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Type of review

Revainrating 5 out of 5

Not compatible with Sense HAT

I've been through a lot of heartbreak with this board but I finally got it to work reliably on a Raspberry Pi 3 B+ model. The Sense HAT incompatibility cost me several hours. This also does not work on the 1 A+ model. In terms of languages, I've had bad results with JavaScript/nodejs, fairly good results with Python3, and best results with C (WiringPi library). Depending on the device you're talking to, speed seems to be an issue.

Pros
  • Includes development resources and manual (examples in C and Python)
Cons
  • -