
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
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trying to understand how to convert serial data to digital data onb arduino micro

Whether granting access to public transit or restricting unauthorized personnel in buildings, NFC card readers can be extremely useful. Although most might not consider how they work – and simply happy getting through a turnstile – there’s a lot going on behind the scenes. In his video, Daniel Raines shows off a pair of prototype access control units (ACUs) that he’s constructed. The two networked devices are each based on a Raspberry Pi Compute Module 4 along with an Arduino Micro that controls six relays to allow or deny entry, provide feedback, fire, and lock up. More details on the project can be found in Raines' clip below.