This M-Bus Slave HAT is an add-on board that allows the Raspberry Pi Pico to function as an M-Bus (meter bus) slave node. It is based on the TSS721 M-Bus Transceiver IC and provides communication via UART0 or UART1.
The HAT features an isolated interface and can be used to read consumption meters with a P1 customer interface or create custom meters for M-Bus systems. Software support includes example codes for Arduino IDE to read meters and implement simple meter functions.
We also have the M-Bus Master HAT here
Note: Raspberry Pi Pico is NOT included
Features
- M-Bus (meter bus) slave node
- Based on the TSS721 M-Bus Transceiver IC
- Communication with Pico via UART0 or UART1
- Isolated Interface
Connection Example – Electric Meter with P1 Port

Resources
- Datasheet
Software
- Arduino IDE
- On our GitHub account we have provided example code for reading consumption meters with P1 customer interface and DLMS/COSAM protocol
- The Arduino M-BUS meter example shows how you can program your own simple meters



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