
Overview
This Arduino MKR shield expand your Arduino MKR with functions for smart metering via meter bus (M-BUS). With the M-BUS Master Shield you can read consumption meters for heat, gas, oil, water that have a built-in M-BUS slave interface.
Tech specs
M-Bus (meter bus) Master:
- Powered by an external 9..30V DC voltage (36V for the MBUS will be generated internally from this voltage)
- Up to 6 unit loads can be powered
- isolated interface
- Can be combined with any Arduino MKR board or Portenta H7
Conformities
Get Inspired

At Arduino, we’re committed to providing developers with tools that make the coding process smooth and efficient. That’s why we're thrilled to announce the new Arduino_PortentaMachineControl library, an upgraded version designed to replace the deprecated Arduino_MachineControl library. It comes with a number of improvements, from a revamped structure to enhanced documentation, making it easier than ever to manage the features of the Arduino Portenta Machine Control. Don’t know the Arduino Portenta Machine Control? It’s a versatile industrial control unit offering soft-PLC control, diverse I/O options, and flexible network connectivity. For more information about this product, visit the dedicated page. What you’ll find in the new library Enhanced library structure: We restructured the library to improve its organization, making it more intuitive. This ensures that you can quickly locate and utilize the functions you need for your projects. Easier-to-understand names: We standardized function and class names for better consistency and readability. This change ensures a clearer and more understandable codebase. Optimized efficiency: We eliminated unnecessary functions, decluttering the library and focusing on the essential features needed for effective machine control. Refreshed and clearer examples: You’ll find reworked examples to showcase the library’s capabilities, providing a better demonstration of the board’s features and of their usage. User manual and migration tutorial But that’s not all! Alongside the library, we’re excited to release the official user manual for the Arduino Portenta Machine Control: an essential and in-depth guide to all the board’s features, readily available to all users. In addition – knowing that transitioning from the old Arduino_MachineControl library might pose some challenges – we’ve prepared a detailed migration tutorial to guide you seamlessly through the process. Make the switch