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Know what your Victron Blue Smart charger is doing — at a glance, all winter.

A tiny gadget that reads your charger over Bluetooth and shows it on a little screen or a status light, on a web page you open from your phone, and in Home Assistant if you use it — for a car, motorcycle, or boat battery over the winter.

The software is free and open-source — you only bring your own ESP32 board (from ≈ €5).

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🔌  I have a WinterDash	🛠️  I want to build or flash one
You were given one, or set it up already. You can't break it — unplugging is always safe. Reading your WinterDash The web dashboard Custom banners Set up a device you were given Wiring the charger Pairing over Bluetooth Home Assistant (optional) Troubleshooting	Comfortable with a board and a USB cable? No building required — flash a ready-made build. Which chargers work Boards Install & update Build from source

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_{Watch a full charge, live — this is demo mode. The same view opens as a web page on your phone, or on the little screen on the device.}

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What you get

👀 Glance and go	🧪 Try it with no charger	🎨 Make it yours
Voltage and charge stage in plain words — charging, charged, or idle. No app to dig through.	Demo mode plays a realistic charge cycle, so you see it all working before you pair anything.	Put your own car, motorcycle, or boat on the screen with the built-in image converter.