DIY ESP32 Gateway Brings Self-Hosted Dashboard and MQTT to Victron Solar Gear

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A developer has released Victron Remote Gateway, an open-source ESP32-S3 project that enables local, cloud-free monitoring of Victron Energy solar devices such as BMV battery monitors and SmartSolar MPPT controllers. The gateway connects to Victron hardware via Bluetooth LE and exposes real-time data through both an in-browser web dashboard and MQTT, eliminating the one-device-at-a-time limitation of the official VictronConnect app. Users can integrate the gateway with home automation platforms like Home Assistant or Node-RED without relying on Victron's cloud-based VRM portal. It also supports remote control of charging parameters and load outputs from any device on the local network. The project is publicly available on GitLab and was built using Arduino/PlatformIO with an async web server and WebSocket support for live updates.

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