espHome esp32-C6 with mmWave LD2410

ncp1113 · January 23, 2025, 9:59pm

I bought an esp32-C6 from Seeed studio. I realize that it is not fully supported. I can get it working. It is on the network. But I can’t get any readings from my LD2410. Any advice would be appreciated. I am using the latest version of Home Assistant and ESPHome. Here is my yaml:

esphome:
  name: esp1
  friendly_name: esp1

esp32:
  board: esp32-c6-devkitm-1
  flash_size: 4MB
  variant: ESP32C6
  framework:
    type: esp-idf
    version: latest

logger:


web_server:
  port: 80
  
# Enable Home Assistant API
api:
  encryption:
    key: "Secret"

ota:
  - platform: esphome
    password: "Secret"

wifi:
  networks:
  - ssid: my_ssid
    password: Secret    
    manual_ip:
      static_ip: 192.168.1.131
      gateway: 192.168.1.1
      subnet: 255.255.255.0

captive_portal:

uart:
  id: LD2410_UART
  tx_pin: GPIO16
  rx_pin: GPIO17
  baud_rate: 256000

ld2410:
  uart_id: LD2410_UART
  throttle: 1500ms

select:
  - platform: ld2410
    distance_resolution:
      name: "distance resolution"
    baud_rate:
      name: "baud rate"
    light_function:
      name: light function
    out_pin_level:
      name: out pin level

binary_sensor:
  - platform: gpio
    pin: GPIO18
    name: "PIR Sensor"
    device_class: motion
  - platform: ld2410
    has_target:
      name: Presence
    has_moving_target:
      name: Moving Target
    has_still_target:
      name: Still Target
    out_pin_presence_status:
      name: out pin presence status
      
switch:
  - platform: ld2410
    engineering_mode:
      name: "engineering mode"

sensor:
  - platform: ld2410
    light:
      name: light
    moving_distance:
      name : Moving Distance
    still_distance:
      name: Still Distance
    moving_energy:
      name: Move Energy
    still_energy:
      name: Still Energy
    detection_distance:
      name: Detection Distance
    g0:
      move_energy:
        name: g0 move energy
      still_energy:
        name: g0 still energy
    g1:
      move_energy:
        name: g1 move energy
      still_energy:
        name: g1 still energy
    g2:
      move_energy:
        name: g2 move energy
      still_energy:
        name: g2 still energy
    g3:
      move_energy:
        name: g3 move energy
      still_energy:
        name: g3 still energy
    g4:
      move_energy:
        name: g4 move energy
      still_energy:
        name: g4 still energy
    g5:
      move_energy:
        name: g5 move energy
      still_energy:
        name: g5 still energy
    g6:
      move_energy:
        name: g6 move energy
      still_energy:
        name: g6 still energy
    g7:
      move_energy:
        name: g7 move energy
      still_energy:
        name: g7 still energy
    g8:
      move_energy:
        name: g8 move energy
      still_energy:
        name: g8 still energy

number:
  - platform: ld2410
    timeout:
      name: timeout
    light_threshold:
      name: light threshold
    max_move_distance_gate:
      name: max move distance gate
    max_still_distance_gate:
      name: max still distance gate
    g0:
      move_threshold:
        name: g0 move threshold
      still_threshold:
        name: g0 still threshold
    g1:
      move_threshold:
        name: g1 move threshold
      still_threshold:
        name: g1 still threshold
    g2:
      move_threshold:
        name: g2 move threshold
      still_threshold:
        name: g2 still threshold
    g3:
      move_threshold:
        name: g3 move threshold
      still_threshold:
        name: g3 still threshold
    g4:
      move_threshold:
        name: g4 move threshold
      still_threshold:
        name: g4 still threshold
    g5:
      move_threshold:
        name: g5 move threshold
      still_threshold:
        name: g5 still threshold
    g6:
      move_threshold:
        name: g6 move threshold
      still_threshold:
        name: g6 still threshold
    g7:
      move_threshold:
        name: g7 move threshold
      still_threshold:
        name: g7 still threshold
    g8:
      move_threshold:
        name: g8 move threshold
      still_threshold:
        name: g8 still threshold

edoargo · January 27, 2025, 4:54pm

I’m on the same train, I’m experimenting with different versions of esp-idf, I’ll keep you updated if I can find something

edoargo · January 27, 2025, 11:14pm

I can share with you my configs, finally able to make it work, if you enable the bluetooth proxy it will fall:

esphome:
  name: esp32c6_presence_1
  friendly_name: 'ESP32C6 Presence 1'

esp32:
  board: esp32-c6-devkitm-1
  variant: esp32c6
  framework:
    type: esp-idf
    platform_version: 6.9.0
    version: 5.3.1
    
    sdkconfig_options:
      CONFIG_ESPTOOLPY_FLASHSIZE_4MB: y



###########################################################

uart:
  tx_pin: GPIO16
  rx_pin: GPIO17
  parity: NONE
  data_bits: 8
  stop_bits: 1
  baud_rate: 256000
  

ld2410:
  id: ld2410_radar

binary_sensor:
  - platform: ld2410
    has_target:
      name: Presence
    has_moving_target:
      name: Moving Target
    has_still_target:
      name: Still Target
    out_pin_presence_status:
      name: out pin presence status        

sensor:
  - platform: ld2410
    light:
      name: light
    moving_distance:
      name : Moving Distance
    still_distance:
      name: Still Distance
    moving_energy:
      name: Move Energy
    still_energy:
      name: Still Energy
    detection_distance:
      name: Detection Distance
    g0:
      move_energy:
        name: g0 move energy
      still_energy:
        name: g0 still energy
    g1:
      move_energy:
        name: g1 move energy
      still_energy:
        name: g1 still energy
    g2:
      move_energy:
        name: g2 move energy
      still_energy:
        name: g2 still energy
    g3:
      move_energy:
        name: g3 move energy
      still_energy:
        name: g3 still energy
    g4:
      move_energy:
        name: g4 move energy
      still_energy:
        name: g4 still energy
    g5:
      move_energy:
        name: g5 move energy
      still_energy:
        name: g5 still energy
    g6:
      move_energy:
        name: g6 move energy
      still_energy:
        name: g6 still energy
    g7:
      move_energy:
        name: g7 move energy
      still_energy:
        name: g7 still energy
    g8:
      move_energy:
        name: g8 move energy
      still_energy:
        name: g8 still energy

  - platform: wifi_signal 
    name: Wifi Signal
    id: wifi_signal_db
    filters:
      - lambda: return min(max(2 * (x + 100.0), 0.0), 100.0);
    update_interval: 60s
    unit_of_measurement: "%"
    entity_category: "diagnostic"


switch:
  - platform: ld2410
    engineering_mode:
      name: "engineering mode"
    # bluetooth:
    #   name: "control bluetooth"

number:
  - platform: ld2410
    timeout:
      name: timeout
    light_threshold:
      name: light threshold
    max_move_distance_gate:
      name: max move distance gate
    max_still_distance_gate:
      name: max still distance gate
    g0:
      move_threshold:
        name: g0 move threshold
      still_threshold:
        name: g0 still threshold
    g1:
      move_threshold:
        name: g1 move threshold
      still_threshold:
        name: g1 still threshold
    g2:
      move_threshold:
        name: g2 move threshold
      still_threshold:
        name: g2 still threshold
    g3:
      move_threshold:
        name: g3 move threshold
      still_threshold:
        name: g3 still threshold
    g4:
      move_threshold:
        name: g4 move threshold
      still_threshold:
        name: g4 still threshold
    g5:
      move_threshold:
        name: g5 move threshold
      still_threshold:
        name: g5 still threshold
    g6:
      move_threshold:
        name: g6 move threshold
      still_threshold:
        name: g6 still threshold
    g7:
      move_threshold:
        name: g7 move threshold
      still_threshold:
        name: g7 still threshold
    g8:
      move_threshold:
        name: g8 move threshold
      still_threshold:
        name: g8 still threshold

text_sensor:
  - platform: ld2410
    version:
      name: "firmware version"
    mac_address:
      name: "mac address"

select:
  - platform: ld2410
    distance_resolution:
      name: "distance resolution"
    light_function:
      name: light function
    out_pin_level:
      name: out pin level


button:
  - platform: restart
    icon: mdi:power-cycle
    name: "ESP Reboot"   
  - platform: ld2410
    restart:
      name: "restart"
    query_params:
      name: query params

# Enable logging
logger:
  baud_rate: 0

# Enable Home Assistant API
api:
  encryption:
    key: "YourKey"

ota:
  - platform: esphome
    password: "YourPSW"

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

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Esp32C6Test Fallback Hotspot"
    password: "YourPSW"
  
captive_portal:

ncp1113 · January 29, 2025, 9:44pm

Thank you for sharing that, Edoargo. Unfortunately, I am still not getting anything from the sensors.

athua · January 30, 2025, 1:54am

Do you have a LD2410B or LD2410C? If so, they have bluetooth so you can try connecting to them via the HLK Radar Tool app from a phone to see if they are powering up and working.
Other things to check:

the LD2410 is powered using 5V and not 3.3V
the TX pin from the ESP32 board is connected to the RX pin on the LD2410
the RX pin from the ESP32 board is connected to the TX pin on the LD2410

ncp1113 · January 30, 2025, 2:50pm

Thanks for the suggestions. I have the LD2410 (not B or C) so no bluetooth. Ecoardo got his working by turning off the bluetooth on the esp32-c6. I am pretty sure the connections are correct. Right now I am trying to get it working using a RaspberryPi Zero W that I already have.

ncp1113 · February 2, 2025, 5:05pm

I bought a LD2410C. It worked using Edoardo’s yaml. Hooray!

cyclemadkiwi · March 18, 2025, 6:58am

I also by mistake got the wifi6 ESP32 C6 board, thanks to this post and the code from Edoardo, I now have a working LD2410 Presence sensor in my Home Assistant

Homeotte41 · September 16, 2025, 5:50pm

have you the sensors in the homeassistant with zigbee?