esphome:
  on_boot:
    then:
      - speaker.play: [0, 1, 2, 3]
      - speaker.stop

i2s_audio:
  i2s_lrclk_pin: 16
  i2s_bclk_pin: 17
  i2s_mclk_pin: 15

speaker:
  - platform: i2s_audio
    id: speaker_id
    dac_type: external
    i2s_dout_pin: 13
    mode: mono