I’m quite new to Openhab, but i made already a nice overview in BasicUI.
I have Node Red as a rule engine on a seperate RPI. There i used the dashboard but i prefer to switch completely to OpenHab.
Now, i want to add a small chart, of the last 30 minutes, refreshed every 30 seconds.
When i read about chart, i see you need persistence. This is not what i want… First, the SD card will wear out, but also i don’t need historical data. When the RPI would restart, i don’t care i loose the values. (It’s just for having an impression that a control is doing well)
Does something like this exists? (or can i link to the chart in NodeRed?)
Both Apache Derby and H2 can be run as in memory databases. Both are supported by the jdbc persistence service. However I don’t know if it actually will work or how you should configure it. But theoretically it should be possible.