[Giovanni] built his energy meter to monitor energy usage in his whole home. An ESP32 serves as the heart of this build. It’s hooked up with a JSY-MK-194G energy metering module, which uses a ...

It’s a snap-on interface for electric meters, dubbed so because its 3D printable ... a Wemos-compatible development board with an ESP32 MCU, an optical interface board, and a few small parts ...