ESPHome BLE proxy on ESP32-C6 board

esphome_ble_esp32c6.yaml

# # This is an esphome configuration file.
# # It is tested on debian-12 and [nanoESP32-C6](https://github.com/wuxx/nanoESP32-C6/blob/master/README_en.md).
# # This configuration should work on any Linux distribution and any ESP32-C6 board though.
#
# # Create and activate python venv, install esphome:
# test -d ./venv || python3 -m venv venv
# source ./venv/bin/activate
# pip install esphome --upgrade
#
# # Connect ESP32-C6 to USB, press and hold "Boot" button, press and release "Reset", release "Boot".
# # Run `sudo dmesg` to find the device name, usually ttyACM0 or ttyACM1.
# # In my case, the message was "cdc_acm 1-4.1.1:1.0: ttyACM1: USB ACM device".
# esphome run --device /dev/ttyACM1 esphome_ble_esp32c6.yaml
# esphome logs --device /dev/ttyACM1 esphome_ble_esp32c6.yaml


esphome:
  name: esphome-ble-esp32c6
  platformio_options:
    upload_port: /dev/ttyACM1
    framework: espidf
    board_build.flash_mode: dio
    platform_packages:
    - platformio/toolchain-xtensa-esp-elf @ 14.2.0+20241119

esp32:
  variant: esp32c6
  board: esp32-c6-devkitc-1
  framework:
    type: esp-idf
    version: 5.3.1 # https://github.com/espressif/esp-idf/releases/tag/v5.3.1
    platform_version: 6.9.0 # https://github.com/platformio/platform-espressif32/releases/tag/v6.9.0
    sdkconfig_options:
      # CONFIG_ESPTOOLPY_FLASHSIZE_8MB: y
      CONFIG_ESPTOOLPY_FLASHSIZE_DETECT: y
      COMPILER_OPTIMIZATION_SIZE: y


bluetooth_proxy:
  active: true

network:
  enable_ipv6: False

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: !secret home_assistant_api_password
  reboot_timeout: 300s

ota:
  platform: esphome
  password: !secret ota_password

wifi:
  networks:
  - ssid: !secret wifi1_ssid
    password: !secret wifi1_password
  - ssid: !secret wifi2_ssid
    password: !secret wifi2_password

sensor:
  - platform: uptime
    type: seconds
    name: Uptime Sensor
    entity_category: diagnostic
  - platform: internal_temperature
    entity_category: diagnostic
    name: "Internal Temperature"

time:
  - platform: sntp
    id: sntp_time
    timezone: Europe/Berlin
    servers:
      - 0.pool.ntp.org
      - 1.pool.ntp.org

secrets.yaml

wifi1_ssid: wifi-2ghz
wifi1_password: cannotRememberThePassword
wifi2_ssid: backup-wifi
wifi2_password: neitherOfThose

mqtt_host: 10.11.12.13
mqtt_username: esphome
mqtt_password: howAboutThat

api_password: dontEvenTryToGuess
ota_password: dontEvenTryToGuess
home_assistant_api_password: Y2hhbmdlbWV0b3NvbWV2ZXJ5bG9uZ3N0cmluZw==

web_server_auth_username: admin
web_server_auth_password: howCanPeopleRememberSoManyPasswords

latitude: 11.111111
longitude: 9.999999

Hi. I get an error: that the API Token is not base64 encoded. If I encode it with base64, the next error is that the token is longer than 32 byte length. Do you have an idea why this happens?
Homeassistant version: "2025.3.4".

Same here! Any solution?

The API Token is not base64 encoded error means that the value of api.encryption.key in line 51 above is not a valid base64 encoding.

Most probably, you need to create a secrets.yaml file in the same folder, and define the values referenced with !secret prefix.

I've updated the gist. See the secrets.yaml example above.

Then, in Home-Assistant, when you add an esphome device, you'll be asked to enter the base64-encoded password Y2hhbmdlbWV0b3NvbWV2ZXJ5bG9uZ3N0cmluZw== or whatever you put there.

This was a HUGE help. Thank you! Any possibility of getting wifi 6 (802.11ax) in there? Several of mt BT proxies are in fringe areas, which is why I bought the C6. I've been messing with lambda calls to esp_wifi_set_protocol for a couple of hours but I suck at coding and can't get it going. Thanks again!

I tried to enable 802.11ax on esp32-c6, with both esphome and bare ESP-IDF, to only find that my Unifi U6 Lite does not support 11ax on 2.4GHz.
I'd suggest to check your access point specs first.
If yours have 11ac chip on 2.4GHz too, then it may worth playing with access point settings such as transmit power and channel number. Also, the narrow 20MHz channel width should give slightly longer range than 40MHz.

Can you please provide the code? Already on a 20Mhz channel (with no other wifi or zigbee near it) and tried on high power when I was setting it up. U7 Pro Wall here, so it supports it.

…

On Thu, May 22, 2025 at 4:47 PM Alex Kabakaev ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ I tried to enable 802.11ax on esp32-c6, with both esphome and bare ESP-IDF, to only find that my Unifi U6 Lite does not support 11ax on 2.4GHz. I'd suggest to check your access point specs first. If yours have 11ac chip on 2.4GHz too, then it may worth playing with access point settings such as transmit power and channel number. Also, the narrow 20MHz channel width should give slightly longer range than 40MHz. — Reply to this email directly, view it on GitHub <https://gist.github.com/kabakaev/759a3292112225db50b98e2254598793#gistcomment-5589878> or unsubscribe <https://github.com/notifications/unsubscribe-auth/AXMZGZUC2H3QQECK2AAZ7NL27YZWBBFKMF2HI4TJMJ2XIZLTSKBKK5TBNR2WLJDUOJ2WLJDOMFWWLO3UNBZGKYLEL5YGC4TUNFRWS4DBNZ2F6YLDORUXM2LUPGBKK5TBNR2WLJDHNFZXJJDOMFWWLK3UNBZGKYLEL52HS4DFVRZXKYTKMVRXIX3UPFYGLK2HNFZXIQ3PNVWWK3TUUZ2G64DJMNZZDAVEOR4XAZNEM5UXG5FFOZQWY5LFVEYTGNJXGA4TSMRQU52HE2LHM5SXFJTDOJSWC5DF> . You are receiving this email because you commented on the thread. Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub> .