Suppose that I have 4 different devices, that are power meters sending data to Cayenne.
The image below is not real, I created it only to show the idea.
So each of the controllers are saying that the device consumption is 10W.
It would be nice to have a 5th widget (Gauge or Line Chart), not attached to any device, which shows the total power consumption (sum of all 4 devices).
Do you think this is feasible?