sound-level.yaml

substitutions:
  name: sound-level
  friendly_name: Sound Level
  # Change this if the SEN0232 OUT pin is connected to another ADC-capable GPIO.
  # Current wiring: SEN0232 OUT -> ESP32-C3 Super Mini GPIO3.
  sound_adc_pin: GPIO3
  # Leave this at 1.0 when "Sound Voltage" matches a multimeter reading.
  adc_voltage_correction: "1.0"

esphome:
  name: ${name}
  friendly_name: ${friendly_name}

esp32:
  board: esp32-c3-devkitm-1
  variant: ESP32C3
  framework:
    type: esp-idf

logger:

api:

ota:
  - platform: esphome

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  ap:
    ssid: "${friendly_name}"
    password: "soundlevel"

captive_portal:

web_server:
  port: 80
  version: 3
  local: true
  include_internal: false

button:
  - platform: restart
    name: Restart

globals:
  - id: sound_calibration_offset_db
    type: float
    restore_value: no
    initial_value: "-8.0"

number:
  - platform: template
    id: sound_calibration_offset
    name: Calibration Offset
    icon: mdi:tune
    entity_category: config
    unit_of_measurement: dB
    min_value: -30
    max_value: 30
    step: 0.1
    initial_value: -8.0
    optimistic: true
    restore_value: false
    set_action:
      - lambda: |-
          id(sound_calibration_offset_db) = x;
          if (!isnan(id(sound_voltage).state)) {
            id(sound_level).publish_state(id(sound_voltage).state * 50.0f + x);
          }

sensor:
  - platform: adc
    id: sound_voltage
    name: Sound Voltage
    pin: ${sound_adc_pin}
    attenuation: auto
    update_interval: 125ms
    accuracy_decimals: 3
    unit_of_measurement: V
    device_class: voltage
    state_class: measurement
    entity_category: diagnostic
    filters:
      - multiply: ${adc_voltage_correction}
      - median:
          window_size: 5
          send_every: 1
          send_first_at: 1
      - sliding_window_moving_average:
          window_size: 8
          send_every: 8
          send_first_at: 8

  - platform: template
    name: Sound Level
    id: sound_level
    unit_of_measurement: dBA
    icon: mdi:volume-high
    state_class: measurement
    accuracy_decimals: 1
    update_interval: 1s
    lambda: |-
      if (isnan(id(sound_voltage).state)) {
        return NAN;
      }
      return id(sound_voltage).state * 50.0f + id(sound_calibration_offset_db);
    filters:
      - clamp:
          min_value: 30.0
          max_value: 130.0

text_sensor:
  - platform: wifi_info
    ip_address:
      name: IP Address
    ssid:
      name: Connected SSID