
Arduino MKR 485 Shield
Sold outWant to add serial communications to your device using the RS-485 protocol? The Arduino MKR 485 shield will provide the industrial connectivity you need.
Overview
Thanks to this shield, you can now connect your MKR board to any of the industrial systems that using the RS 485 protocol.
The MKR 485 shield is the ultimate expansion that allows MKR boards to connect to almost any legacy industrial system, such as industrial PLCs, controllers, drives and HMIs. Old industrial systems (e.g., machinery, heating systems, and conveyors) can to turned into IoT devices through a serial connection using the MKR 485.
The shield is based on the MAXIM MAX3157 ( Datasheet ) and provides Half / Full Duplex .
Standard operational mode: Half Duplex
Tech specs
Interface | Serial |
Circuit Operating Voltage | 3.3 V |
Transceiver | MAXIM MAX3157 (datasheet) |
Buck converter | Texas Instruments TPS54232 (datasheet) |
Vin (screw connector) | 7 V - 24 V |
Vin (header) | 5 V |
Compatibilty | MKR size |
Switchable onboard termination resistor | |
Operating mode | Isolated Half / full duplex (switchable) |
Conformities
Resources for Safety and Products
Manufacturer Information
The production information includes the address and related details of the product manufacturer.
Arduino S.r.l.
Via Andrea Appiani, 25
Monza, MB, IT, 20900
https://www.arduino.cc/
Responsible Person in the EU
An EU-based economic operator who ensures the product's compliance with the required regulations.
Arduino S.r.l.
Via Andrea Appiani, 25
Monza, MB, IT, 20900
Phone: +39 0113157477
Email: support@arduino.cc
Documentation
OSH: Schematics
The Arduino MKR 485 Sheld is open-source hardware! You can build your own board using the following files:
EAGLE FILES IN .ZIP SCHEMATICS IN .PDFLearn more
Get Inspired

This code sets up an Arduino device to connect to WiFi and communicate with the OpenAI API. It uses the Adafruit_SSD1306 library to control a small OLED display, displaying messages and responses from the API. The device sends a prompt to the API asking "What is Arduino?" and waits for a response, which it then displays on the OLED screen. This is done using a secure SSL connection, and the API key is stored as a variable in the code. Overall, this code demonstrates how an Arduino device can be used to interact with web services and display data on a small screen.

While it’s yet to make its premiere, Matt Denton has already built the D-O droid from Star Wars: The Rise of Skywalker using a MKR WiFi 1010 for control, along with a MKR IMU Shield and a MKR Motor Carrier. The droid scoots around on what appears to be one large wheel, which conceals the Arduino boards as well as other electronics, batteries, and mechanical components. Denton’s wheel design is a bit more complicated mechanically than it first appears, as its split into a center section, with thin drive wheels on the side that enable differential steering. On top, a cone-shaped head provides sounds and movement, giving the little RC D-O a ton of personality. The droid isn’t quite finished as of the video below, but given how well it works there, the end product should be amazing!