Use this code to make your LD2410 sensor to work with ESP32 or ESP8266 board

ESPHome-YAML-ld2410-esp32.yaml

esphome:
  name: ld2410-esp32
  friendly_name: ld2410-esp32

esp32:
  board: esp32dev
  framework:
    type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: "IArm3ZGuqL1HLZXXbu4/L0ciw1TDSagu6THKP8LnFdo="

ota:
  password: "3373716c7967d461cf4bd0ce1ba42e9a"

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

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Ld2410-Esp32 Fallback Hotspot"
    password: "AhxmD317i7r1"

captive_portal:
 
light:
  - platform: binary
    name: "Blue Status Light"
    output: light_output
    id: led_light
    restore_mode: ALWAYS_OFF
 
output:
  - platform: gpio
    pin: GPIO2
    id: light_output
 
i2c:
  sda: 21
  scl: 22
  scan: true
  id: bus_a
 
uart:
  id: ld2410_uart
  tx_pin: RX
  rx_pin: TX
  baud_rate: 256000
  parity: NONE
  stop_bits: 1
 
ld2410:
  uart_id: ld2410_uart
  throttle: 1500ms
  id: ld2410_comp
 
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
 
button:
  - platform: ld2410
    factory_reset:
      name: "factory reset"
    restart:
      name: "restart"
    query_params:
      name: query params
 
number:
  - platform: ld2410
    timeout:
      name: timeout
    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
    light_threshold:
      name: light threshold
 
text_sensor:
  - platform: ld2410
    version:
      name: "presenece sensor version"
    mac_address:
      name: "presenece sensor mac address"
 
switch:
  - platform: ld2410
    engineering_mode:
      name: "engineering mode"
    bluetooth:
      name: control Bluetooth
 
sensor:
  - platform: ld2410
    moving_distance:
      name: "Moving distance (cm)"
    still_distance:
      name: "Still Distance (cm)"
    moving_energy:
      name: "Move Energy (%)"
    still_energy:
      name: "Still Energy (%)"
    detection_distance:
      name: "Distance Detection (cm)"
    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
    light:
      name: light
 
  - platform: bh1750
    name: "Illuminance"
    address: 0x23
    update_interval: 30s
 
binary_sensor:
 
  - platform: ld2410
    has_target:
      name: Presence
    has_moving_target:
      name: Moving Target
    has_still_target:
      name: Still Target

I get this message, I can count on help,
ERROR Running command failed: device reports readiness to read but returned no data (device disconnected or multiple access on port?)
ERROR Please try running esptool.py --before default_reset --after hard_reset --baud 460800 --port /dev/ttyUSB0 --chip esp32 write_flash -z --flash_size detect 0x10000 /data/build/ld2410-esp32/.pioenvs/ld2410-esp32/firmware.bin 0x1000 /data/build/ld2410-esp32/.pioenvs/ld2410-esp32/bootloader.bin 0x8000 /data/build/ld2410-esp32/.pioenvs/ld2410-esp32/partitions.bin 0xe000 /data/cache/platformio/packages/framework-arduinoespressif32/tools/partitions/boot_app0.bin locally.
INFO Upload with baud rate 460800 failed. Trying again with baud rate 115200.

It doesn't work for me either using a D1 Mini and the LD2410 without Bluetooth. I also get "Found no i2c devices!" so disabled that already as well as "platform: bh1750" that wasn't detected either

This is most likely because the device uses the same rx/tx as the usb. Try flashing a base ESPHome firmware before attaching the device. Once flashed, you can perform subsequent updates via OTA updates.

I managed to get it working using a D1 mini and a LD2410 , the Yaml files is below

` captive_portal:

uart:
id: ld2410_uart
tx_pin: GPIO15
rx_pin: GPIO13
baud_rate: 256000
parity: NONE
stop_bits: 1

ld2410:
uart_id: ld2410_uart

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

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

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

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
  `

I had the issue with NodeMcu v3. My main issue was with uart config, where I was using GPIO17 or something like that. Changed to this and works like a charm

uart:
  tx_pin: 
    number: GPIO1
  rx_pin: 
    number: GPIO3
  baud_rate: 256000
  parity: NONE
  stop_bits: 1