Hi,

has someone running successfully this setup with an example? How can i parse successfully the Mqtt date?

MQTT -> MQTT-Broker -> Telegraf -> InfluxDB -> Grafana

Greetings

This is the MQTT tutorial, showing how to publish the data to the MQTT broker.

https://www.iammeter.com/docs/integrate-with-mqtt-server

You can do the subsequent step ( Telegraf -> InfluxDB -> Grafana) by yourself.

There are some similar tutorials (integrate into the Home assistant by MQTT)

https://www.iammeter.com/docs/summary-home-assistant#mqtt-sensor

JSON format

The JSON format in MQTT mode is the same with the other ways(tls,tcp,HTTP,https),

please refer to 

https://www.iammeter.com/docs/integrate-with-thirdparty-server#2-how-to-integrate