ESPHome Bluetooth proxy, ESP32-C3, Home Assistant

bt-proxy.yaml

## Blogpost https://pysselilivet.blogspot.com/2026/02/homeassistant-esphome-creating.html
esphome:
  name: bt-proxy
  friendly_name: Bluetooth Proxy
  min_version: 2025.8.0
  name_add_mac_suffix: true

  on_boot:
    priority: 600
    then:
      - light.turn_on:
          id: status_rgb
          red: 100%
          green: 0%
          blue: 0%
          brightness: 50%

esp32:
  # board: esp32-c3-devkitm-1
  variant: esp32c3
  framework:
    type: esp-idf
    sdkconfig_options:
      CONFIG_BT_BLE_42_FEATURES_SUPPORTED: y
      CONFIG_BT_BLE_50_FEATURES_SUPPORTED: n

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

  reboot_timeout: 15min

api:
  reboot_timeout: 15min

logger:

ota:
  - platform: esphome
    id: ota_esphome

esp32_ble_tracker:
  scan_parameters:
    # We currently use the defaults to ensure Bluetooth
    # can co-exist with WiFi In the future we may be able to
    # enable the built-in coexistence logic in ESP-IDF
    active: true
  
  on_ble_advertise:
    then:
      - if:
          condition:
            not:
              script.is_running: ble_blink_script
          then:
            - script.execute: ble_blink_script
      
bluetooth_proxy:
  active: true

button:
  - platform: safe_mode
    id: button_safe_mode
    name: Safe Mode Boot

  - platform: factory_reset
    id: factory_reset_btn
    name: Factory reset
    
light:
  - platform: esp32_rmt_led_strip
    id: status_rgb
    rgb_order: RGB
    pin: GPIO10
    num_leds: 1
    chipset: WS2812
    name: "Built-in RGB LED"
    icon: mdi:led-off

sensor:
  - platform: uptime
    name: "Uptime"
    id: uptime_sensor
    update_interval: 60s

  - platform: wifi_signal
    name: "WiFi Signal"
    update_interval: 60s

script:
  - id: ble_blink_script
    mode: single
    then:
      - if:
          condition:
            wifi.connected:
          then:
            - light.turn_on:
                id: status_rgb
                red: 0%
                green: 0%
                blue: 100%
                brightness: 80%
                transition_length: 0s
            - delay: 200ms
            - light.turn_on:
                id: status_rgb
                red: 0%
                green: 100%
                blue: 0%
                brightness: 50%
                transition_length: 0s
            - delay: 9.8s