SDM120 / SDM630 Modbus Energy Meter with ESP32 & Home Assistant
Connect an Eastron SDM120 or SDM630 Modbus energy meter to an ESP32 and Home Assistant using ESPHome, RS-485, verified register addresses and import/export kWh sensors.
ESP32 Energy Monitoring Methods Compared: Pulse Meter vs CT Clamp vs PZEM vs Modbus
Quick Summary (TL;DR):There is no single “best” ESP32 energy-monitoring method because the four common approaches solve different problems. A pulse reader is the cheapest and safest way to read whole-home energy from an existing utility meter; its accumulated kWh effectively…
ESP32 Modbus Energy Meter with Home Assistant: SDM120 / SDM630 Guide
Quick Summary (TL;DR):An ESP32 can turn an RS-485 Modbus energy meter into a completely local Home Assistant energy monitor. For single-phase circuits, an Eastron SDM120-M/Modbus-class meter is one of the easiest DIN-rail choices; for three-phase, solar, EV charging or more…
ESP32 Energy Monitoring Methods Compared: Pulse Meter vs CT Clamp vs PZEM vs Modbus
Quick Summary (TL;DR):There is no single “best” ESP32 energy-monitoring method because the four common approaches solve different problems. A pulse reader is the cheapest and safest way to read whole-home energy from an existing utility meter; its accumulated kWh effectively…