I am making the move from NAS to Raspberry Pi 3B
Since you tried the move with the Z-wave stick.
I see that you had the problem of empty nodes, but did the nodes work, or not?

I remember I had the empty nodes before, often after the NAS shuffled the USB ports again after a reboot.

I hope to make ...

Hello,

I'd like to see a graph with my solar and power usage data combined. As far as I know this is not yet available.
Data I like to see in the graph:
Power taken from the grid (positive)
Power given to the grid (negative) This is now also shown positive in the Smart meter graph, what might work ...