diff --git a/boards/hosyond-es3c28p/audio.yaml b/boards/hosyond-es3c28p/audio.yaml
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+# Copyright 2025 Vinicius Fortuna
+# SPDX-License-Identifier: Apache-2.0
+
+# Audio codec: ES8311 (I2C control + I2S data), shared I2C bus on GPIO15/16
+# Amplifier: FM8002E, enabled via GPIO1 (active low)
+# Microphone: MEMS LMA2718B381 (via ES8311 ADC)
+# Speaker connector: 1.25mm 2P
+
+i2s_audio:
+  - id: i2s_audio_bus
+    i2s_mclk_pin: GPIO4   # MCLK
+    i2s_bclk_pin: GPIO5   # BCLK
+    i2s_lrclk_pin: GPIO7  # LRCK
+
+audio_dac:
+  - id: es8311_dac
+    platform: es8311
+    i2c_id: i2c_bus
+    use_microphone: true
+    bits_per_sample: 16bit
+    sample_rate: 48000
+
+# TODO(fortuna): I haven't validated the microphone config yet.
+microphone:
+  - id: main_microphone
+    platform: i2s_audio
+    i2s_audio_id: i2s_audio_bus
+    i2s_din_pin: GPIO6  # ASDOUT from Codec -> I2S_DI on ESP32
+    adc_type: external
+    bits_per_sample: 16bit
+    sample_rate: 48000
+
+speaker:
+  - id: main_speaker
+    platform: i2s_audio
+    i2s_audio_id: i2s_audio_bus
+    i2s_dout_pin: GPIO8  # I2S_DO from ESP32 -> DSDIN on Codec
+    dac_type: external
+    audio_dac: es8311_dac
+    bits_per_sample: 16bit
+    sample_rate: 48000
+    channel: mono
+
+switch:
+  # FM8002E amplifier enable — must be on (low) to hear speaker output
+  - id: enable_speaker_amp
+    platform: gpio
+    name: Enable Speaker
+    pin:
+      number: GPIO1
+      inverted: true  # Active low
+    restore_mode: RESTORE_DEFAULT_ON
+    entity_category: config
+    disabled_by_default: true
diff --git a/boards/hosyond-es3c28p/board.yaml b/boards/hosyond-es3c28p/board.yaml
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+# Copyright 2025 Vinicius Fortuna
+# SPDX-License-Identifier: Apache-2.0
+
+# Hosyond ES3C28P — 2.8" 240×320 IPS TFT ESP32-S3 display board with capacitive touch
+#
+# References:
+# - https://hosyond.com/
+# - https://www.lcdwiki.com/2.8inch_ESP32-S3_Display
+# - Schematic: https://www.lcdwiki.com/res/ES3C28P/2.8inch_ESP32-S3_Display_Schematic.pdf
+# - User manual: https://www.lcdwiki.com/res/ES3C28P/2.8inch_IPS_ESP32-S3_ES3C28P_ES3N28P_User_Manual.pdf
+
+packages:
+  display: !include ./display.yaml
+  audio: !include ./audio.yaml
+
+esp32:
+  board: esp32-s3-devkitc-1
+  flash_size: 16MB
+  framework:
+    type: esp-idf
+
+psram:
+  mode: octal
+  speed: 80MHz
+
+# SPI bus — shared by the ILI9341 display
+spi:
+  - id: spi_bus
+    clk_pin: GPIO12   # LCD_CLK
+    mosi_pin: GPIO11  # LCD_MOSI
+    miso_pin: GPIO13  # LCD_MISO
+
+# I2C bus — shared by FT6336 touch controller and ES8311 audio codec
+i2c:
+  - id: i2c_bus
+    scl: GPIO15
+    sda: GPIO16
+    scan: true
+    frequency: 400kHz
+
+# NOTE: ESPHome does not yet implement sd_mmc_card. Uncomment once supported:
+# SD card (SDIO 4-bit): CLK=IO38, CMD=IO40, D0=IO39, D1=IO41, D2=IO48, D3=IO47
+#
+# sd_mmc_card:
+#   id: sd_card
+#   clk_pin: GPIO38
+#   cmd_pin: GPIO40
+#   data0_pin: GPIO39
+#   data1_pin: GPIO41
+#   data2_pin: GPIO48
+#   data3_pin: GPIO47
+#   mode_1bit: false
+
+binary_sensor:
+  - id: boot_button
+    platform: gpio
+    name: Boot Button
+    pin:
+      number: GPIO0
+      inverted: true
+      mode:
+        input: true
+        pullup: true
+
+sensor:
+  - id: battery_voltage
+    platform: adc
+    pin: GPIO9
+    name: Battery Voltage
+    attenuation: 12dB
+    update_interval: 60s
+    filters:
+      - multiply: 2.0  # Voltage divider on the ADC pin
diff --git a/boards/hosyond-es3c28p/demo.yaml b/boards/hosyond-es3c28p/demo.yaml
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+# Copyright 2025 Vinicius Fortuna
+# SPDX-License-Identifier: Apache-2.0
+
+packages:
+  board: !include ./board.yaml
+
+esphome:
+  name: hosyond-es3c28p-demo
+  friendly_name: Hosyond ES3C28P Demo
+  on_boot:
+    priority: -100
+    then:
+      - switch.turn_on: enable_speaker_amp
+      - delay: 500ms
+      # Set a reasonable default volume
+      - speaker.volume_set:
+          id: main_speaker
+          volume: 0.5
+      - light.turn_on:
+          id: status_led
+          red: 0%
+          green: 100%
+          blue: 0%
+          brightness: 50%
+      - rtttl.play: "boot:d=1,o=4,b=60:c"
+
+logger:
+
+rtttl:
+  speaker: main_speaker
+  gain: 0.2
+
+# Boot button: play a sound and toggle LED
+binary_sensor:
+  - id: !extend boot_button
+    on_press:
+      - light.toggle: status_led
+      - rtttl.play: "click:d=8,o=5,b=160:c6,e6"
+
+# Update battery label when ADC fires
+sensor:
+  - id: !extend battery_voltage
+    on_value:
+      - lvgl.label.update:
+          id: battery_label
+          text:
+            format: "%.2fV"
+            args: [x]
+
+lvgl:
+  displays: [main_display]
+  touchscreens: [main_touchscreen]
+  pages:
+    - id: main_page
+      widgets:
+        - label:
+            align: top_mid
+            y: 8
+            text: "ES3C28P Demo"
+        - label:
+            id: battery_label
+            align: top_right
+            x: -8
+            y: 8
+            text: "--V"
+
+        - label:
+            x: 8
+            y: 52
+            text: "R"
+        - slider:
+            id: red_slider
+            x: 28
+            y: 42
+            width: 190
+            min_value: 0
+            max_value: 255
+            on_value:
+              - light.turn_on:
+                  id: status_led
+                  red: !lambda "return lv_slider_get_value(id(red_slider)) / 255.0f;"
+                  green: !lambda "return lv_slider_get_value(id(green_slider)) / 255.0f;"
+                  blue: !lambda "return lv_slider_get_value(id(blue_slider)) / 255.0f;"
+                  brightness: 1.0
+
+        - label:
+            x: 8
+            y: 102
+            text: "G"
+        - slider:
+            id: green_slider
+            x: 28
+            y: 92
+            width: 190
+            min_value: 0
+            max_value: 255
+            on_value:
+              - light.turn_on:
+                  id: status_led
+                  red: !lambda "return lv_slider_get_value(id(red_slider)) / 255.0f;"
+                  green: !lambda "return lv_slider_get_value(id(green_slider)) / 255.0f;"
+                  blue: !lambda "return lv_slider_get_value(id(blue_slider)) / 255.0f;"
+                  brightness: 1.0
+
+        - label:
+            x: 8
+            y: 152
+            text: "B"
+        - slider:
+            id: blue_slider
+            x: 28
+            y: 142
+            width: 190
+            min_value: 0
+            max_value: 255
+            on_value:
+              - light.turn_on:
+                  id: status_led
+                  red: !lambda "return lv_slider_get_value(id(red_slider)) / 255.0f;"
+                  green: !lambda "return lv_slider_get_value(id(green_slider)) / 255.0f;"
+                  blue: !lambda "return lv_slider_get_value(id(blue_slider)) / 255.0f;"
+                  brightness: 1.0
+
+        - label:
+            x: 8
+            y: 202
+            text: "BL"
+        - slider:
+            id: backlight_slider
+            x: 28
+            y: 192
+            width: 190
+            min_value: 0
+            max_value: 100
+            value: 100
+            on_value:
+              - light.turn_on:
+                  id: display_backlight_light
+                  brightness: !lambda "return lv_slider_get_value(id(backlight_slider)) / 100.0f;"
+
+        - label:
+            x: 8
+            y: 255
+            text: "Amp"
+        - switch:
+            id: amp_ui_switch
+            x: 44
+            y: 248
+            state:
+              checked: true
+            on_click:
+              - if:
+                  condition:
+                    lambda: 'return lv_obj_has_state(id(amp_ui_switch), LV_STATE_CHECKED);'
+                  then:
+                    - switch.turn_on: enable_speaker_amp
+                  else:
+                    - switch.turn_off: enable_speaker_amp
+        - button:
+            id: sound_btn
+            x: 130
+            y: 242
+            width: 100
+            height: 36
+            on_click:
+              - rtttl.play: "ui:d=8,o=5,b=160:e6,g6"
+            widgets:
+              - label:
+                  align: center
+                  text: "Sound"
+
+        - label:
+            align: bottom_mid
+            y: -8
+            text: "Boot btn: toggle LED + sound"
diff --git a/boards/hosyond-es3c28p/display.yaml b/boards/hosyond-es3c28p/display.yaml
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+# Copyright 2025 Vinicius Fortuna
+# SPDX-License-Identifier: Apache-2.0
+
+# Display: ILI9341V, 2.8" IPS TFT, 240×320, SPI
+# Touch: FT6336G capacitive, I2C
+# RGB LED: WS2812B on GPIO42
+
+output:
+  - id: display_backlight
+    platform: ledc
+    pin: GPIO45  # LCD_BL (active high)
+
+light:
+  - id: display_backlight_light
+    platform: monochromatic
+    name: Display Backlight
+    icon: "mdi:television"
+    entity_category: config
+    output: display_backlight
+    restore_mode: RESTORE_DEFAULT_ON
+    default_transition_length: 0ms
+
+  - id: status_led
+    platform: esp32_rmt_led_strip
+    name: Status LED
+    pin: GPIO42  # WS2812B
+    num_leds: 1
+    rgb_order: GRB
+    chipset: WS2812
+
+display:
+  - id: main_display
+    platform: ili9xxx
+    model: ILI9341
+    spi_id: spi_bus
+    cs_pin: GPIO10   # LCD_CS
+    dc_pin: GPIO46   # LCD_DC
+    # RST is tied to the EN (system reset) pin; no software reset available.
+    invert_colors: false
+    data_rate: 40MHz
+    update_interval: never
+    auto_clear_enabled: false
+
+touchscreen:
+  - id: main_touchscreen
+    platform: ft63x6
+    i2c_id: i2c_bus
+    display: main_display
+    interrupt_pin: GPIO17  # Touch IRQ (active low)
+    # RST is active low. ESPHome ft63x6 drives the pin LOW then HIGH to reset,
+    # so inverted must NOT be set (that would leave the chip held in reset).
+    reset_pin: GPIO18
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