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M-Bus HAT for Raspberry Pi
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Awesome Extras
With this M-Bus HAT, you can extend your Raspberry Pi with functions for smart metering! The HAT provides an M-Bus master to which other M-Bus devices such as electricity, water or gas meters (with the appropriate interface) can be connected directly.
A datasheet/user guide is available to help you get started. With libmbus, powerful C++ software is available for the Raspberry Pi, which can be used with the M-Bus HAT. If you prefer Python take a look at the pyMeterBus project.
Features
- M-Bus (Meter-Bus) Master
- Compatible with European standard EN 13757-2
- For the remote reading of consumption meters
- For up to 6 unit-loads (9mA)
- External DC power supply (9...30V) needed (36V for the MBUS will be generated internally from this voltage)
- Galvanically isolated interface
- Removable screw terminals for bus and power supply connection
- Indicator LEDs for RX and TX signals
- Selectable UART via jumper (with Raspberry Pi 4 only)
- For Raspberry Pi 2 / 3 / 4 Model B, Raspberry Pi Zero and compatible SBC
Package Contents
- 1x M-Bus HAT (standard version)
- 1x Terminal block connector
Raspberry Pi not included
Resources
- With libmbus, powerful C++ software is available for the Raspberry Pi, which can be used with the M-Bus HAT.
- If you prefer Python take a look at the pyMeterBus project.
- Datasheet
- M-Bus homepage
Pin Usage
| Function | UART0 | UART3 | UART4 | UART5 |
| GND | Pin 6, 9, 14, 25, 39 | |||
| 3.3V | Pin 1 | |||
| 5V | Pin 2, 4 | |||
| TX | GPIO14 (8) | GPIO4 (7) | GPIO8 (24) | GPIO12 (32) |
| RX | GPIO15 (10) | GPIO5 (29) | GPIO9 (21) | GPIO13 (33) |
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