With this MBUS Slave Featherwing you can create your own MBus devices. For example, you can create your own MBUS meter or interface for other measured variables, which can then be queried via an MBUS master.
Furthermore, this shield can be used to evaluate meters with a P1 interface and DLMS/COSEM protocol.
M-Bus Slave Node
based on the TSS721 M-Bus Transceiver IC from Texas Instruments
can be combined with any Feather microcontroller board