esp32-configs/athom-smart-plug.yaml

substitutions:
  # Default name
  name: "athom-smart-plug-v3"
  # Default friendly name   
  friendly_name: "Athom Plug V3"
  # Allows ESP device to be automatically linked to an 'Area' in Home Assistant. Typically used for areas such as 'Lounge Room', 'Kitchen' etc  
  room: ""
  # Description as appears in ESPHome & top of webserver page
  device_description: "athom esp32-c3 smart plug"
  # Project Name
  project_name: "Athom Technology.Smart Plug V3"
  # Projection version denotes the release version of the yaml file, allowing checking of deployed vs latest version
  project_version: "v2.0.0"
  # Restore the relay (GPO switch) upon reboot to state:
  relay_restore_mode: RESTORE_DEFAULT_ON
  # Set the update interval for sensors
  sensor_update_interval: 10s
  # Current Limit in Amps. AU Plug = 10. IL, BR, EU, UK, US Plug = 16.
  current_limit : "16"
  # Define a domain for this device to use. i.e. iot.home.lan (so device will appear as athom-smart-plug-v2.iot.home.lan in DNS/DHCP logs)
  dns_domain: ".local"
  # Set timezone of the smart plug. Useful if the plug is in a location different to the HA server. Can be entered in unix Country/Area format (i.e. "Australia/Sydney")
  timezone: ""
  # Set the duration between the sntp service polling ntp.org servers for an update
  sntp_update_interval: 6h
  # Network time servers for your region, enter from lowest to highest priority. To use local servers update as per zones or countries at: https://www.ntppool.org/zone/@
  sntp_server_1: "0.pool.ntp.org"
  sntp_server_2: "1.pool.ntp.org"
  sntp_server_3: "2.pool.ntp.org"  
  # Enables faster network connections, with last connected SSID being connected to and no full scan for SSID being undertaken
  wifi_fast_connect: "false"
  # Define logging level: NONE, ERROR, WARN, INFO, DEBUG (Default), VERBOSE, VERY_VERBOSE
  log_level: "INFO"
  # Hide the ENERGY sensor that shows kWh consumed, but with no time period associated with it. Resets when device restarted and reflashed.
  hide_energy_sensor: "true"
  # Enable or disable the use of IPv6 networking on the device
  ipv6_enable: "false"
  # Power plug icon selection. Change to reflect the type/country of powr plug in use, this will update the power plug icon shown next to the switch
  power_plug_type: "power-socket-us"  # Options: power-socket-au | power-socket-ch | power-socket-de | power-socket-eu | power-socket-fr | power-socket-it | power-socket-jp | power-socket-uk | power-socket-us |

########################## End of Substitutions #########################

esphome:
  name: "${name}"
  friendly_name: "${friendly_name}"
  comment: "${device_description}"
  area: "${room}"  
  name_add_mac_suffix: true
  min_version: 2025.7.0
  project:
    name: "${project_name}"
    version: "${project_version}"
  platformio_options:
    board_build.mcu: esp32c3
    board_build.variant: esp32c3
    board_build.flash_mode: dio
  on_boot:
    - priority: 600
      then:
        - select.set_index:
            id: power_mode
            index: !lambda |-
                    return id(restore_mode)-1;
        - lambda: |-
              switch(id(restore_mode))
              {
              case 1:{
                      id(relay).turn_off();
                      break;
                            }
              case 2:{
                      id(relay).turn_on();
                      break;
                            }
              default:{
                      break;
                            }
              }


esp32:
  board: esp32-c3-devkitm-1
  flash_size: 4MB
  variant: ESP32C3
  framework:
    type: esp-idf
    version: recommended

preferences:
  flash_write_interval: 5min

api:

ota:
  - platform: esphome

logger:
  level: ${log_level}
  baud_rate: 0

mdns:
  disabled: false

web_server:
  port: 80
#  version: 3

network:
  enable_ipv6: ${ipv6_enable}

wifi:
  # This spawns an AP with the device name and mac address with no password.
  ap: {}
  # Allow rapid re-connection to previously connect WiFi SSID, skipping scan of all SSID
  fast_connect: "${wifi_fast_connect}"
  # Define dns domain / suffix to add to hostname
  domain: "${dns_domain}"

captive_portal:

esp32_improv:
  authorizer: none

dashboard_import:
  package_import_url: github://athom-tech/esp32-configs/athom-smart-plug.yaml

uart:
  rx_pin: GPIO20
  baud_rate: 4800
  data_bits: 8
  stop_bits: 1
  parity: EVEN

globals:
  - id: total_energy
    type: float
    restore_value: yes
    initial_value: '0.0'

  - id: restore_mode
    type: int
    restore_value: yes
    initial_value: "2"      # 0 = Always_Off. 1 = Restore_Power_Off. 2 = Always_On.

select:
  - platform: template
    name: "Power On State"
    id: "power_mode"
    optimistic: true
    icon: mdi:electric-switch
    options:
      - Always Off
      - Always On
      - Restore Power Off State
    on_value:
      then:
        - lambda: |-
            id(restore_mode)=i+1;

binary_sensor:
  - platform: status
    name: "Status"
    icon: mdi:check-network-outline
    entity_category: diagnostic    

  - platform: gpio
    pin:
      number: GPIO3
      mode: INPUT_PULLUP
      inverted: true
    name: "Power Button"
    id: power_button
    disabled_by_default: true
    on_multi_click:
      - timing:
          - ON for at most 1s
          - OFF for at least 0.2s
        then:
          - switch.toggle: relay
      - timing:
          - ON for at least 4s
        then:
          - button.press: Reset

sensor:
  - platform: uptime
    name: "Uptime Sensor"
    id: uptime_sensor
    type:
      timestamp
    entity_category: "diagnostic"

  - platform: wifi_signal
    name: "WiFi Signal dB"
    id: wifi_signal_db
    update_interval: 60s
    entity_category: "diagnostic"

  - platform: copy
    source_id: wifi_signal_db
    name: "WiFi Signal Percent"
    filters:
      - lambda: return min(max(2 * (x + 100.0), 0.0), 100.0);
    unit_of_measurement: "Signal %"
    entity_category: "diagnostic"
    device_class: ""

  - platform: cse7766
    id: athom_cse7766
    current:
      name: "Current"
      icon: mdi:current-ac
      filters:
        - throttle_average: ${sensor_update_interval}
        - lambda: if (x < 0.060) return 0.0; else return x;   #For the chip will report less than 3w power when no load is connected
      on_value_range:
        - above: ${current_limit}
          then:
            - switch.turn_off: relay

    voltage:
      name: "Voltage"
      icon: mdi:sine-wave
      filters:
        - throttle_average: ${sensor_update_interval}

    power:
      name: "Power"
      id: power_sensor
      icon: mdi:power
      filters:
        - throttle_average: ${sensor_update_interval}
        - lambda: if (x < 3.0) return 0.0; else return x;    #For the chip will report less than 3w power when no load is connected

    energy:
      name: "Energy"
      id: energy
      icon: mdi:lightning-bolt
      unit_of_measurement: kWh
      filters:
        - throttle: ${sensor_update_interval}
        # Multiplication factor from W to kW is 0.001
        - multiply: 0.001
      on_value:
        then:
          - lambda: |-
              static float previous_energy_value = 0.0;
              float current_energy_value = id(energy).state;
              id(total_energy) += current_energy_value - previous_energy_value;
              previous_energy_value = current_energy_value;
              id(total_energy_sensor).update();

    apparent_power:
      name: "Apparent Power"
      icon: mdi:power
      filters:
        - throttle_average: ${sensor_update_interval}

    reactive_power:
      name: "Reactive Power"
      icon: mdi:flash
      filters:
        - throttle_average: ${sensor_update_interval}

    power_factor:
      name: "Power Factor"
      icon: mdi:percent-outline
      filters:
        - throttle_average: ${sensor_update_interval}

  - platform: template
    name: "Total Energy"
    id: total_energy_sensor
    unit_of_measurement: kWh
    device_class: "energy"
    state_class: "total_increasing"
    icon: mdi:lightning-bolt
    accuracy_decimals: 3
    lambda: |-
      return id(total_energy);
    update_interval: ${sensor_update_interval}

  - platform: total_daily_energy
    name: "Total Daily Energy"
    restore: true
    power_id: power_sensor
    unit_of_measurement: kWh
    icon: mdi:hours-24
    accuracy_decimals: 3
    filters:
      - multiply: 0.001

button:
  - platform: restart
    name: "Restart"
    entity_category: config

  - platform: factory_reset
    name: "Factory Reset"
    id: Reset
    entity_category: config

  - platform: safe_mode
    name: "Safe Mode"
    internal: false
    entity_category: config

switch:
  - platform: gpio
    name: "Switch"
    pin: GPIO5
    id: relay
    restore_mode: ${relay_restore_mode}
    icon: mdi:${power_plug_type}

light:
  - platform: status_led
    name: "Status LED"
    id: blue_led
    icon: mdi:lightbulb-outline
    disabled_by_default: true
    pin:
      inverted: true
      number: GPIO6

text_sensor:
  - platform: wifi_info
    ip_address:
      name: "IP Address"
      icon: mdi:ip-network
      entity_category: diagnostic
    ssid:
      name: "Connected SSID"
      icon: mdi:wifi-strength-2
      entity_category: diagnostic
    mac_address:
      name: "Mac Address"
      icon: mdi:network-pos
      entity_category: diagnostic

  #  Creates a sensor showing when the device was last restarted
  - platform: template
    name: 'Last Restart'
    id: device_last_restart
    icon: mdi:clock
    entity_category: diagnostic
#    device_class: timestamp

time:
  - platform: sntp
    id: sntp_time
  # Define the timezone of the device
    timezone: "${timezone}"
  # Change sync interval from default 5min to 6 hours (or as set in substitutions)
    update_interval: ${sntp_update_interval}
  # Set specific sntp servers to use
    servers: 
      - "${sntp_server_1}"
      - "${sntp_server_2}"
      - "${sntp_server_3}"    
  # Publish the time the device was last restarted
    on_time_sync:
      then:
        # Update last restart time, but only once.
        - if:
            condition:
              lambda: 'return id(device_last_restart).state == "";'
            then:
              - text_sensor.template.publish:
                  id: device_last_restart
                  state: !lambda 'return id(sntp_time).now().strftime("%a %d %b %Y - %I:%M:%S %p");'