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Build Faster with the RS485 Shield for Arduino
Arduino RS485 is an industrial standard for long distance, anti-interferrence and reliable communication. So we create this RS485 Arduino shield, especially designed for the Arduino controller board. It converts UART/Serial protocol to RS485 protocol. This RS485 board allows Arduino access to industrial standard protocol easily.
In contrast to RS-422, which has a single driver circuit which cannot be switched off, RS-485 drivers use three-state logic allowing individual transmitters to be deactivated. This allows RS-485 to implement linear bus topologies using only two wires. The equipment located along a set of RS-485 wires are interchangeably called nodes, stations or devices.
Important: Use the official DFRobot links below for wiring, sample code, downloads, and the latest setup notes for this SKU.
Why you'll love it
- Integrated a standard RS485 port,a mini RS485 port, RS485 headers
- Provide the welding areas to make full use of the free space. And more importantly, it's convenient for your DIY design
- Switch between automatic mode and manual transmission mode, which expand the scope of application
- Besides Tx/Rx interface, there is a switch to block/disable this shield, when Arduino needs to be programmed
- Gold immersion PCB. Long pins on the back adapt to most Arduino controllers
- Power module: +5V
What you can build
This board is a good fit for learning, prototyping, robotics, and controller-based builds. Use it as the main brain for sensors, displays, wireless projects, and classroom or workshop demos.
Starter bundles
A solid starter setup includes a USB cable, breadboard, jumper wires, and a few DFRobot Gravity sensors or an LCD module for quick testing.
Recommended add-ons
Useful add-ons include sensors, displays, shields, breadboards, headers, and enclosures if you are building a complete prototype or classroom kit.
Technical specifications
| Product | RS485 Shield for Arduino |
|---|---|
| SKU | DFR0259 |
| Brand | DFRobot |
| Interface | I2C, UART, RS485, Analog, Digital |
| Power module | +5V |
| Module size | 55mmx53mm(2.16"x2.08") |
| Dimensions | 55mm |
Pinout & usage notes
Use the correct SDA and SCL pins on your controller and make sure the bus voltage is compatible. Verify serial levels, baud rate, and pin mapping in the official DFRobot guide before first power-up. For analog readings, use a stable reference and keep wiring short when possible for cleaner signals.
DFRobot resources
Official product page: View on DFRobot
Wiki / documentation: Open DFRobot wiki
What’s in the box
1 × RS485 Shield for Arduino
Frequently Asked Questions
Is this a good choice for learning and prototyping? Yes. It is well suited for classroom work, hobby builds, quick tests, and project development with common modules and sensors.
Does it work with other boards too? Often yes, as long as voltage, interface, and pin mapping match. ESP32 and Raspberry Pi users should still check the official docs first.
Where can I find wiring and examples? Use the official DFRobot product page and wiki links below for guides, downloads, and code examples.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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