2-Channel Isolated RS485 Expansion HAT - Cover Expand

2-Channel Isolated RS485 Expansion HAT

Waveshare Waveshare

9RPIH2CHRS485

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Working with RS485 is made simple with this awesome 2-Channel Isolated RS485 Expansion HAT, offering SPI & I2C with numerous protection features.

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For anyone who enjoys creating large networks via Serial Communications, you will already know how great the RS485 standard can be, as it is capable of performing well in almost all major points of concern. Not only can it handle long distances and multiple drivers and receivers on the network, but it also performs much faster than RS232, RS423 and RS422 standards at short to medium distances.

This is why we always strive to provide high quality Modules that are capable of RS485, such as the 2-Channel Isolated RS485 Expansion HAT, as this can be used for both home projects, professional applications, and even industrial use cases thanks to the EMF-resistant twisted coaxial cable pairing that’s used to connect all of the nodes, points and systems on the network.

The 2-Channel Isolated RS485 Expansion HAT is a really useful Raspberry Pi HAT that really takes advantage of the RS485 standard, and offers isolated dual-channels that supports auto-transceiving via SPI. This makes it relatively simple to incorporate into projects in conjunction with Raspberry Pi Boards, providing fast, stable and safe communication, with a slew of onboard protection features that all ensure your network remains safe, stable and working effectively.

In addition to the above, some key features of this expansion HAT includes a high performance UART chip that supports both SPI and I2C, onboard power isolation to keep various parts protected, ADI Magnetic Isolation to prevent electromagnetic interference, as well as quite a few other great protection and functionality features.

 

2-Channel Isolated RS485 Expansion HAT  -  Technical Specifications:

  • Manufacturer

– Waveshare                                                                        

  • Operating Voltage

– 3.3V / 5V DC (Optional)

  • UART Expansion Chip

– SC16IS752

  • RS485 Transceiver

– SP3485

  • Communication Interface

– SPI

  • Data Rate

– 300 ~ 921600

  • Integrated Optocoupler

– PC817

  • Integrated Terminal Resistor

– 120Ω (Configurable via Jumper)

  • Integrated Digital Optocoupler

– ADUM1412

  • Integrated Power Supply Isolation

– B0505LS

  • TVS Diode Array

– SMAJ12CA

  • Operating Mode Selection

– Half-Auto: A=0 | B=1

– Full-Auto: A=1 | B=0

  • Onboard Indicators

– PWR LED

– UART Transceiving Indicator

  • Extra Parts Included

– 2x20 Pin Female Header

– 2 x RPi Screw Sets with Spacers

  • Weight

– 30g

  • Dimensions

– 65 x 56.5mm

 

Additional Resources:

 

SC16IS752 - Datasheet

SC16IS752 Datasheet for 9RPIHSEREXP + 9RPIH2CHRS485

Download (303.93k)

RT9193 - Datasheet

9RPIHPWRMGMNT - RT9193 Datasheet

Download (200.29k)

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2-Channel Isolated RS485 Expansion HAT

2-Channel Isolated RS485 Expansion HAT

When it comes to producing unique electronics components and modules, there are very few brands that can provide the quality that Waveshare can. Based in the Futian District in Shenzhen, China, Waveshare are experts in developing electronics to a high standard of quality, which have been thoroughly tested to work seamlessly with corresponding development platforms and systems – such as the E-Ink HATs for Raspberry Pi’s.


What we love most about Waveshare is how they are dedicated to providing quality products, and have moved away from the typical “Made in China” stigma – cheap products with cheap parts and components. Instead, Waveshare understand the value of supplying quality products and building sustainable relationships with international resellers and distributors. They know that consistent quality will result in consistent business, and as such they always ensure strict quality control for each and every product that comes out of the manufacturing plant.


We are always excited to peruse through their vast catalogue of exciting new products to find unique modules, components or even entire development boards that are designed with quality in mind. Because we know that every cent that we spend with Waveshare will be well-spent, with each product that order adding real value to our own catalogue of products.