All you need is a printed shell, a Wemos-compatible development board with an ESP32 MCU, an optical interface board, and a few small parts like a ring magnet ... meter adapter added to your smart ...

These clamps measure the flow of electricity using magnets. 'Put the clamp back the wrong way round, which often happens with smart meters put in by people not skilled at handling the technology ...

His meter might not have an LED, but it did have a magnet attached to the counter disk which activated an internal hall sensor. With some hacking, he was able to attach an external Hall-effect ...

This is the second part of a three-part series on the topic of smart meters and wireless technology. Last week we looked at ...