Build a safe DIY home energy monitor using an RTL-SDR, MQTT, and Home Assistant to track smart meter data without opening your panel.

By combining a vintage radio's sensitive front-end with modern SDR technology, I created a powerful hybrid receiver that offers both the nostalgic feel of classic hardware and the precision of modern software.

Raspberry Pi development board with SDR hardware, which functions as a web server, and the radio is accessed via a web browser.