Been running a Pi 4 (2GB) connected to my Multiplus via VE.Bus for about 18 months now and it's been rock solid. Using VenusOS large image on the Pi rather than a dedicated Cerbo, saves a fair bit of money and does essentially the same job.
All the data gets pulled into InfluxDB and visualised through Grafana — took a weekend to get it properly dialled in but honestly worth every minute. I can see SOC trends, PV yield, grid/generator usage all on one dashboard. Way more flexibility than the standard VRM portal, though I still push to VRM as a backup.
A few things I'd flag if you're setting this up:
- SD card quality matters a lot — went through two cheap ones before switching to a Samsung Endurance card. These things write constantly so don't skimp
- The VE.Direct USB cables from Victron are the cleanest way to connect if you're not on VE.Bus
- Worth setting up Node-RED alongside it if you want automations — I've got mine sending a Telegram alert if SOC drops below 20% overnight
The cabin is pretty remote so having everything logged locally means I'm not reliant on internet to see what the system's doing. Pulled the data off last month when troubleshooting a dodgy Fogstar cell and it was genuinely invaluable having months of granular history to look at.
Anyone else gone down this route? Curious whether people are running Venus OS or doing something more DIY with just plain Raspbian and direct serial comms. Also interested if anyone's integrated weather forecast data to anticipate low-yield days.