ESP32 Energy Meter (BLE/BTHome) for Home Assistant

Record Pulses

Requirements

Accurately see each pulse

Must run on battery

Solution Overview

Count the number of pulses every x minutes Multiply by ZZZ factor to give kWh energy used during the xx minutes Calculate current power use Watt Possibly calculate dailiy energy conumption and reset at midnight BLE to reduce power consumption (no Wifi since it consumes too much power) Probably can't sleep because it needs to read the pulses, but perhaps there is a sleep mode for when BLE is off

Circuit Design

LDR
ESP32, BLE Battery

Battery sizing

Firmware Components and Libraries

C++ Adruino Framework BTHome standard for broadcasting sensor data Other libraries