Been running a Pi 4 with VenusOS for about 18 months now and it's been rock solid. Replaced the Cerbo GX I was going to buy and saved myself a decent chunk of cash in the process.
Got it pulling data from my Multiplus-II and MPPT controllers via VE.Direct cables, then pushing everything into InfluxDB with Grafana on top. The dashboards are genuinely brilliant — way more granular than the standard VRM portal, and crucially it all stays local even when my internet goes down.
For my setup (garden office + EV charging), being able to see exactly when the battery hits certain thresholds and correlating that with car charging sessions has been really useful for tweaking my schedules. I've got Node-RED in the mix as well for some basic automation — cuts grid import when solar production drops below a certain point.
A few things worth mentioning if you're just starting out:
- VenusOS Large is the image you want — it includes the Signal K and Node-RED stuff baked in
- VE.Direct to USB cables are fiddly to source sometimes; Victron's own ones are worth the premium
- Give the Pi a decent power supply — a cheap one will cause you grief
The community-built dashboards on GitHub are a good starting point rather than building from scratch. mr-manuel has a solid Grafana template that I modified for my own needs.
Anyone else gone down this rabbit hole? Curious what monitoring setups others are running and whether anyone's managed to integrate Shelly plugs or similar into the same stack.