ESPHome based power meter for EM5100 "smart" meters

esphome_power_meter.yaml

esphome:
  name: esphome_power_meter
  platform: ESP8266
  board: nodemcuv2

wifi:
  ssid: SSID
  password: PASSWORD

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Esphome Power Meter"
    password: "SDAFLKHJ@#(*R&ASDFLHJK"

captive_portal:

# Enable logging
logger:

# Enable Home Assistant API
api:
  password: "secret"

ota:
  password: "secret"

sensor:
  # This is the LDR Light sensor on the "wH" port - this flashses for both IMPORT and EXPORT
  - platform: pulse_counter
    name: 'Import Export Power Meter'
    id: 'impexp_power'
    pin: GPIO5
    unit_of_measurement: 'kW'
    filters:
      # Convert pulses per minutes into kW
      - multiply: 0.06
    update_interval: 30s

  # This is the IR sensor on the "TEST" port - flahses for power IMPORT only
  - platform: pulse_counter
    name: 'Import Power Meter'
    id: 'import_power'
    pin: GPIO4
    unit_of_measurement: 'kW'
    filters:
      # Convert pulses per minutes into kW
      - multiply: 0.06
    update_interval: 30s

  # Derived sensor for EXPORT (=Total - IMPORT)
  - platform: template
    name: 'Export Power Meter'
    id: 'export_power'
    icon: mdi:pulse
    unit_of_measurement: 'kW'
    lambda: !lambda |-
      if (id(import_power).state > id(impexp_power).state) {
        return 0.0;
      } else {
        return id(impexp_power).state - id(import_power).state;
      }

    update_interval: 30s

  # Now for the daily totals
  - platform: total_daily_energy
    name: "Total Daily Import Energy"
    power_id: import_power
    icon: mdi:transmission-tower
    accuracy_decimals: 2
  - platform: total_daily_energy
    name: "Total Daily Export Energy"
    power_id: export_power
    icon: mdi:solar-power
    accuracy_decimals: 2

  # Report on signal strength - useful for when its outside in a faraday cage
  - platform: wifi_signal
    name: "Power Meter WiFi Signal Sensor"
    update_interval: 60s
    
  - platform: adc 
    pin: VCC 
    name: “Power Meter Battery Voltage”
    update_interval: 60s


time:
  - platform: homeassistant
    id: homeassistant_time