I’m using Arduino Uno and the web app.
I have succesfully connected a temperature sensor to channel 0.
I can see the value, but the graph works only in “Live” mode.
I have 2 widgets:
1 Value widget
1 Chart widget
If I press “Details & chart” on Value widget there is the same problem: no data is displayed.
If I press on “Data” tab I can see that a lot of data are present, so it seems a bug of chart widget.