Display In A Web Browser; Figure 29. Example Mqtt Notification Display On A Smartphone; Figure 30. Mqtt Data Transfer - STMicroelectronics ST25DV64KC User Manual

For example, the power data displayed in the graph, is sent by the LoRa
events are sent when the SW2 button of the Nucleo board is pressed.
Note: It is necessary to wait for a minimum of 15 seconds between consecutive user events.
8.4.3

Display in a web browser

It is possible to display MQTT data in a web browser. In this demonstration, a server based agent, Telegraf (refer
to [8]), is used to subscribe to receive the MQTT data. The data is then copied to the InfluxDB (cloud) database
(refer to [9]).
A Grafana dashboard (refer to [10]) is used to display the data present in the InfluxDB database.
The configuration of Telegraf, InfluxDB, and Grafana is beyond the scope of this demonstration and is not covered
in the current document.
The information displayed on the Grafana dashboard is shown below.
UM3146 - Rev 1
Figure 29. Example MQTT notification display on a smartphone
Figure 30.
®
device every 10 minutes. The user
MQTT data transfer
UM3146
Display of LoRa® data
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