HLK-LD2450 Initial experiments to connect to HomeAssistant

Here is one that I use with my ESP32 C3 Mini 1 boards. It is based on the YAML from Screek for their 2A sensors.

1 Like

just got my ld2450 from Ali.
Honestly, it seems to throw totally random numbers :slight_smile:
it came with version 2.04.23101915, but i also tried downgrading to 1.2.23051810 and it seems to behave the same
am i missing something?

1 Like

firmware 2 seems also to have enabled the reporting of serial data over BLE, so can we avoid ESP-Home or a dedicated device to read from it? However, i canā€™t figure out how to connect it to HAā€¦ any hint?

I donā€™t believe there is currently a direct bluetooth integration available in HA for the LD2450. For those using the LD2450 in Home Assistant would be by conecting the TX/RX pins it to an ESP board.

1 Like

i see thereā€™s a BLE integration for the 2410, maybe it is somehow similar, iā€™ll try to give a lookā€¦
the device publishes a service UUID where data is available in the same format it has on the serial interface, so it should be readableā€¦
however, no idea how to change settings (for example, single target vs multi target)

1 Like

The LD2410 discloses the high-level protocol, while the BLE portion of the LD2450 is not currently disclosed and may have to be reversed over.

From a batch of LD2450ā€™s we just DIYā€™d, the numbers are off if the radar is mounted at the right height, but it doesnā€™t seem to be some sort of random number.

just to check if i got you right, LD2450 broadcasts on BT the same datagram it sends on serial, but this is not ā€œofficialā€ so we are assuming it can change?
Oh well, it makes sense :slight_smile:
i saw the LD2410 BLE code and it seems quite hard to adapt (datagram is totally different!) so probably you are right and it is not a good investment to create code until it is officialā€¦

1 Like

I think their mechanisms may be the same (we have not evaluated their communication data, nor have we grabbed packets), and of course we would love to have HLK publish these protocol codes in the future. After that, it will still take open source enthusiasts to complete an integration plugin. That seems a bit far away.
At the moment I think the WIFI approach is satisfactory, we share more than 1300 2Aā€™s around the world (exhausting to make, but quite fun) and most of them work well.

1 Like

After having great experience with LD2410 decide to try the LD2450.

Have an issue I need help with despite the rather smooth setup. ā€œAny Presenceā€ shows detected but all of the zone presence show clear even when Iā€™m in the zone.
Using the HLK android tool, zone I created there is not reflected in HA, so I manually created another set of zones in HA. Now it seems I have two different set of zones, one in HLK app and one in HA.

I believe Iā€™m using the yaml shared by athua which is based on the screek 2A.

Kit

  • 30pin esp32 cp2012
  • LD2450
  name: esphome-web-xxxxxx
  friendly_name: ESP32-CP2012
  espID: esphome_web_xxxxxx

esphome:
  name: ${name}
  friendly_name: ${friendly_name}

  on_boot:
    - priority: 100
      then:
        lambda: |-
          id(cpu_speed) = ESP.getCpuFreqMHz();
    - priority: -200
      then:
        lambda: |-
          id(zone1_target_exsits).publish_state(false);
          id(zone2_target_exsits).publish_state(false);
          id(zone3_target_exsits).publish_state(false);
          id(zone_ex1_target_exsits).publish_state(false);

esp32:
  board: esp32dev
  framework:
    type: arduino

debug:
  update_interval: 30s

# Enable logging
logger:

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

ota:

esp32_ble_tracker:
  scan_parameters:
    active: true

bluetooth_proxy:
  active: true

wifi:
  networks:
  - ssid: !secret wifi2_ssid
    password: !secret wifi2_password
    priority: 2
  - ssid: !secret wifi_ssid
    password: !secret wifi_password
    priority: 1
  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: ${name}
    password: "xxxxxxxxx"

captive_portal:

preferences:
    flash_write_interval: 5s
  
globals:
  - id: cpu_speed
    type: int
    restore_value: no
    initial_value: '0'
  - id: last_update_ld2450
    type: unsigned long
    restore_value: no
    initial_value: '0'
  - id: init_zone_publish
    type: bool
    restore_value: no
    initial_value: "false"

text_sensor:
  - platform: debug
    reset_reason:
      name: "ESP Reset Reason"
      icon: mdi:anchor
      disabled_by_default: True
  - platform: wifi_info
    ip_address:
      name: ESP IP Address
      entity_category: "diagnostic"
      disabled_by_default: True
      icon: mdi:ip-network
    mac_address:
      name: ESP MAC
      entity_category: "diagnostic"
      icon: mdi:ip-network
      disabled_by_default: True
  - platform: template
    name: "Zone1 Info"
    id: tips_zone1_conf
    icon: mdi:information-outline
    entity_category: config
    lambda: |-
      return {"Configure below" };
    update_interval: 1000s
  - platform: template
    name: "Zone2 Info"
    id: tips_zone2_conf
    icon: mdi:information-outline
    entity_category: config
    lambda: |-
      return {"Configure below" };
    update_interval: 1000s
  - platform: template
    name: "Zone3 Info"
    id: tips_zone3_conf
    icon: mdi:information-outline
    entity_category: config
    lambda: |-
      return {"Configure below" };
    update_interval: 1000s
  - platform: template
    name: "Zout1 Info"
    id: tips_zone_ex1_conf
    icon: mdi:information-outline
    entity_category: config
    lambda: |-
      return {"Zone Exclusion 1" };
    update_interval: 1000s

number:
  - platform: template
    name: "Any Presence Timeout"
    id: any_presence_timeout
    min_value: 0
    max_value: 600
    mode: box
    device_class: duration
    entity_category: config
    unit_of_measurement: s
    icon: mdi:timer-off
    step: 1
    optimistic: True
    initial_value: 0
    restore_value: True
  - platform: template
    name: "Zone1 Timeout"
    id: zone1_x_timeout
    min_value: 0
    max_value: 600
    mode: box
    device_class: duration
    entity_category: config
    unit_of_measurement: s
    icon: mdi:timer-off
    step: 1
    optimistic: True
    initial_value: 0
    restore_value: True
  - platform: template
    name: "Zone2 Timeout"
    id: zone2_x_timeout
    min_value: 0
    max_value: 600
    mode: box
    device_class: duration
    entity_category: config
    unit_of_measurement: s
    icon: mdi:timer-off
    step: 1
    optimistic: True
    initial_value: 0
    restore_value: True
  - platform: template
    name: "Zone3 Timeout"
    id: zone3_x_timeout
    min_value: 0
    max_value: 600
    mode: box
    device_class: duration
    entity_category: config
    unit_of_measurement: s
    icon: mdi:timer-off
    step: 1
    optimistic: True
    initial_value: 0
    restore_value: True
  # Zone 1
  - platform: template
    name: Zone1 X-Begin
    id: zone1_x_begin
    min_value: -4000
    max_value: 4000
    mode: box
    device_class: distance
    entity_category: config
    unit_of_measurement: mm
    icon: mdi:arrow-left-bold
    step: 10
    optimistic: True
    initial_value: 0
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zone1_vaild
  - platform: template
    name: Zone1 X-End
    id: zone1_x_end
    mode: box
    min_value: -4000
    max_value: 4000
    device_class: distance
    unit_of_measurement: mm
    entity_category: config
    icon: mdi:arrow-right-bold
    step: 10
    initial_value: 0
    optimistic: True
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zone1_vaild
  - platform: template
    name: Zone1 Y-Begin
    id: zone1_y_begin
    mode: box
    min_value: 0
    max_value: 6000
    device_class: distance
    entity_category: config
    icon: mdi:arrow-up-bold
    unit_of_measurement: mm
    step: 10
    initial_value: 0
    optimistic: True
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zone1_vaild
  - platform: template
    name: Zone1 Y-End
    id: zone1_y_end
    icon: mdi:arrow-down-bold
    mode: box
    min_value: 0
    max_value: 6000
    initial_value: 0
    entity_category: config
    device_class: distance
    unit_of_measurement: mm
    step: 10
    optimistic: True
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zone1_vaild
  
  # Zone 2
  - platform: template
    name: Zone2 X-Begin
    id: zone2_x_begin
    min_value: -4000
    max_value: 4000
    mode: box
    device_class: distance
    entity_category: config
    unit_of_measurement: mm
    icon: mdi:arrow-left-bold
    step: 10
    optimistic: True
    initial_value: 0
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zone2_vaild
  - platform: template
    name: Zone2 X-End
    id: zone2_x_end
    mode: box
    min_value: -4000
    max_value: 4000
    device_class: distance
    unit_of_measurement: mm
    entity_category: config
    icon: mdi:arrow-right-bold
    step: 10
    initial_value: 0
    optimistic: True
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zone2_vaild
  - platform: template
    name: Zone2 Y-Begin
    id: zone2_y_begin
    mode: box
    min_value: 0
    max_value: 6000
    device_class: distance
    entity_category: config
    icon: mdi:arrow-up-bold
    unit_of_measurement: mm
    step: 10
    initial_value: 0
    optimistic: True
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zone2_vaild
  - platform: template
    name: Zone2 Y-End
    id: zone2_y_end
    icon: mdi:arrow-down-bold
    mode: box
    min_value: 0
    max_value: 6000
    initial_value: 0
    entity_category: config
    device_class: distance
    unit_of_measurement: mm
    step: 10
    optimistic: True
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zone2_vaild

  # Zone 3
  - platform: template
    name: Zone3 X-Begin
    id: zone3_x_begin
    min_value: -4000
    max_value: 4000
    mode: box
    device_class: distance
    entity_category: config
    unit_of_measurement: mm
    icon: mdi:arrow-left-bold
    step: 10
    optimistic: True
    initial_value: 0
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zone3_vaild
  - platform: template
    name: Zone3 X-End
    id: zone3_x_end
    mode: box
    min_value: -4000
    max_value: 4000
    device_class: distance
    unit_of_measurement: mm
    entity_category: config
    icon: mdi:arrow-right-bold
    step: 10
    initial_value: 0
    optimistic: True
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zone3_vaild
  - platform: template
    name: Zone3 Y-Begin
    id: zone3_y_begin
    mode: box
    min_value: 0
    max_value: 6000
    device_class: distance
    entity_category: config
    icon: mdi:arrow-up-bold
    unit_of_measurement: mm
    step: 10
    initial_value: 0
    optimistic: True
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zone3_vaild
  - platform: template
    name: Zone3 Y-End
    id: zone3_y_end
    icon: mdi:arrow-down-bold
    mode: box
    min_value: 0
    max_value: 6000
    initial_value: 0
    entity_category: config
    device_class: distance
    unit_of_measurement: mm
    step: 10
    optimistic: True
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zone3_vaild
  
  # Zout1
  - platform: template
    name: Zout1 X-Begin
    id: zone_ex1_x_begin
    min_value: -4000
    max_value: 4000
    mode: box
    device_class: distance
    entity_category: config
    unit_of_measurement: mm
    icon: mdi:arrow-left-bold
    step: 10
    optimistic: True
    initial_value: 0
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zout1_vaild
  - platform: template
    name: Zout1 X-End
    id: zone_ex1_x_end
    mode: box
    min_value: -4000
    max_value: 4000
    device_class: distance
    unit_of_measurement: mm
    entity_category: config
    icon: mdi:arrow-right-bold
    step: 10
    initial_value: 0
    optimistic: True
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zout1_vaild
  - platform: template
    name: Zout1 Y-Begin
    id: zone_ex1_y_begin
    mode: box
    min_value: 0
    max_value: 6000
    device_class: distance
    entity_category: config
    icon: mdi:arrow-up-bold
    unit_of_measurement: mm
    step: 10
    initial_value: 0
    optimistic: True
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zout1_vaild
  - platform: template
    name: Zout1 Y-End
    id: zone_ex1_y_end
    icon: mdi:arrow-down-bold
    mode: box
    min_value: 0
    max_value: 6000
    initial_value: 0
    entity_category: config
    device_class: distance
    unit_of_measurement: mm
    step: 10
    optimistic: True
    restore_value: True
    on_value: 
      then:
        - script.execute: check_zout1_vaild

binary_sensor:
  - platform: status
    name: Online
    id: ink_ha_connected
  - platform: template
    name: "Any Presence"
    id: any_target_exsits
    device_class: occupancy
    filters:
      - delayed_off: !lambda |-
          return id(any_presence_timeout).state * 1000.0;
  - platform: template
    name: "Zone1 Presence"
    id: zone1_target_exsits
    device_class: occupancy
    filters:
      - delayed_off: !lambda |-
          return id(zone1_x_timeout).state * 1000.0;
  - platform: template
    name: "Zone2 Presence"
    id: zone2_target_exsits
    device_class: occupancy
    filters:
      - delayed_off: !lambda |-
          return id(zone2_x_timeout).state * 1000.0;
  - platform: template
    name: "Zone3 Presence"
    id: zone3_target_exsits
    device_class: occupancy
    filters:
      - delayed_off: !lambda |-
          return id(zone3_x_timeout).state * 1000.0;
  - platform: template
    name: "Zout1 Presence"
    id: zone_ex1_target_exsits
    icon: mdi:account-multiple-remove
    device_class: occupancy

script:
  - id: check_zone1_vaild
    then:
      - lambda: |-
          if (id(zone1_x_begin).state > id(zone1_x_end).state){
            id(tips_zone1_conf).publish_state("Err: X-Begin > X-End");
            return;
          }
          if (id(zone1_y_begin).state > id(zone1_y_end).state){
            id(tips_zone1_conf).publish_state("Err: Y-Begin > Y-End");
            return;
          }
          if (id(zone1_x_begin).state == 0, id(zone1_x_end).state == 0, id(zone1_y_begin).state == 0, id(zone1_y_end).state == 0){
            id(tips_zone1_conf).publish_state("Configure below");
            return;
          }

          int x_size = id(zone1_x_end).state - id(zone1_x_begin).state;
          int y_size = id(zone1_y_end).state - id(zone1_y_begin).state;

          char combined[80]; 
          sprintf(combined, "Curr Size: %d x %d", x_size, y_size);
          id(tips_zone1_conf).publish_state(combined);
  - id: check_zone2_vaild
    then:
      - lambda: |-
          if (id(zone2_x_begin).state > id(zone2_x_end).state){
            id(tips_zone2_conf).publish_state("Err: X-Begin > X-End");
            return;
          }
          if (id(zone2_y_begin).state > id(zone2_y_end).state){
            id(tips_zone2_conf).publish_state("Err: Y-Begin > Y-End");
            return;
          }
          if (id(zone2_x_begin).state == 0, id(zone2_x_end).state == 0, id(zone2_y_begin).state == 0, id(zone2_y_end).state == 0){
            id(tips_zone2_conf).publish_state("Configure below");
            return;
          }

          int x_size = id(zone2_x_end).state - id(zone2_x_begin).state;
          int y_size = id(zone2_y_end).state - id(zone2_y_begin).state;

          char combined[80]; 
          sprintf(combined, "Curr Size: %d x %d", x_size, y_size);
          id(tips_zone2_conf).publish_state(combined);
  - id: check_zone3_vaild
    then:
      - lambda: |-
          if (id(zone3_x_begin).state > id(zone3_x_end).state){
            id(tips_zone3_conf).publish_state("Err: X-Begin > X-End");
            return;
          }
          if (id(zone3_y_begin).state > id(zone3_y_end).state){
            id(tips_zone3_conf).publish_state("Err: Y-Begin > Y-End");
            return;
          }
          if (id(zone3_x_begin).state == 0, id(zone3_x_end).state == 0, id(zone3_y_begin).state == 0, id(zone3_y_end).state == 0){
            id(tips_zone3_conf).publish_state("Configure below");
            return;
          }

          int x_size = id(zone3_x_end).state - id(zone3_x_begin).state;
          int y_size = id(zone3_y_end).state - id(zone3_y_begin).state;

          char combined[80]; 
          sprintf(combined, "Curr Size: %d x %d", x_size, y_size);
          id(tips_zone3_conf).publish_state(combined);
  - id: check_zout1_vaild
    then:
      - lambda: |-
          if (id(zone_ex1_x_begin).state > id(zone_ex1_x_end).state){
            id(tips_zone_ex1_conf).publish_state("Err: X-Begin > X-End");
            return;
          }
          if (id(zone_ex1_y_begin).state > id(zone_ex1_y_end).state){
            id(tips_zone_ex1_conf).publish_state("Err: Y-Begin > Y-End");
            return;
          }
          id(tips_zone_ex1_conf).publish_state("Zone Exclusion 1");

sensor:
  - platform: template
    name: "ESP CPU Speed"
    accuracy_decimals: 0
    icon: mdi:cpu-32-bit
    unit_of_measurement: Mhz
    disabled_by_default: True
    lambda: |-
      return (id(cpu_speed));
    entity_category: "diagnostic"
    update_interval: 600s
  - platform: template
    id: sys_esp_temperature
    name: ESP Temperature
    lambda: return temperatureRead();
    unit_of_measurement: Ā°C
    device_class: TEMPERATURE
    update_interval: 45s
    entity_category: "diagnostic"
  - platform: uptime
    name: ESP Uptime
    id: sys_uptime
    update_interval: 60s
  - platform: wifi_signal 
    name: RSSI
    id: wifi_signal_db
    update_interval: 60s
    entity_category: "diagnostic"
  - platform: template
    id: esp_memory
    icon: mdi:memory
    name: ESP Free Memory
    lambda: return heap_caps_get_free_size(MALLOC_CAP_INTERNAL) / 1024;
    unit_of_measurement: 'kB'
    state_class: measurement
    entity_category: "diagnostic"
    update_interval: 60s
  #-------------------------------------#
  # 高ēŗ§é›·č¾¾ę•°ę®
  - platform: template
    name: "All Target Counts"
    id: all_target_count
    accuracy_decimals: 0
    icon: "mdi:counter"
    unit_of_measurement: "targets"
  - platform: template
    name: "Zone1 Target Counts"
    id: zone1_target_count
    accuracy_decimals: 0
    icon: "mdi:counter"
    unit_of_measurement: "targets"
  - platform: template
    name: "Zone2 Target Counts"
    id: zone2_target_count
    accuracy_decimals: 0
    icon: "mdi:counter"
    unit_of_measurement: "targets"
  - platform: template
    name: "Zone3 Target Counts"
    id: zone3_target_count
    accuracy_decimals: 0
    icon: "mdi:counter"
    unit_of_measurement: "targets"
  - platform: template
    name: "Zout1 Target Counts"
    id: zone_ex1_target_count
    accuracy_decimals: 0
    icon: mdi:account-multiple-minus-outline
    unit_of_measurement: "targets"

  # Target 1
  - platform: template
    name: "Target1 X"
    id: target1_x
    accuracy_decimals: 0
    unit_of_measurement: 'mm'
    state_class: measurement
    device_class: distance
  - platform: template
    name: "Target1 Y"
    id: target1_y
    accuracy_decimals: 0
    unit_of_measurement: 'mm'
    state_class: measurement
    device_class: distance
  - platform: template
    name: "Target1 Speed"
    id: target1_speed
    accuracy_decimals: 2
    unit_of_measurement: 'm/s'
    state_class: measurement
    device_class: speed
  - platform: template
    name: "Target1 Resolution"
    id: target1_resolution
    accuracy_decimals: 0
    unit_of_measurement: 'mm'
    state_class: measurement
    device_class: distance
  
  # Target 2
  - platform: template
    name: "Target2 X"
    id: target2_x
    accuracy_decimals: 0
    unit_of_measurement: 'mm'
    state_class: measurement
    device_class: distance
  - platform: template
    name: "Target2 Y"
    id: target2_y
    accuracy_decimals: 0
    unit_of_measurement: 'mm'
    state_class: measurement
    device_class: distance
  - platform: template
    name: "Target2 Speed"
    id: target2_speed
    accuracy_decimals: 0
    unit_of_measurement: 'm/s'
    state_class: measurement
    device_class: speed
  - platform: template
    name: "Target2 Resolution"
    id: target2_resolution
    accuracy_decimals: 0
    unit_of_measurement: 'mm'
    state_class: measurement
    device_class: distance

  # Target 3
  - platform: template
    name: "Target3 X"
    id: target3_x
    accuracy_decimals: 0
    unit_of_measurement: 'mm'
    state_class: measurement
    device_class: distance
  - platform: template
    name: "Target3 Y"
    id: target3_y
    accuracy_decimals: 0
    unit_of_measurement: 'mm'
    state_class: measurement
    device_class: distance
  - platform: template
    name: "Target3 Speed"
    id: target3_speed
    accuracy_decimals: 0
    unit_of_measurement: 'm/s'
    state_class: measurement
    device_class: speed
  - platform: template
    name: "Target3 Resolution"
    id: target3_resolution
    accuracy_decimals: 0
    unit_of_measurement: 'mm'
    state_class: measurement
    device_class: distance

time:
  - platform: sntp
    id: time_now

switch:
  - platform: factory_reset
    name: Factory Reset
    disabled_by_default: True
    icon: mdi:heart-broken
  - platform: template
    name: Zout1 Enable
    id: zone_ex1_enable
    optimistic: True
    icon: mdi:account-cancel
    entity_category: config
    restore_mode: RESTORE_DEFAULT_OFF

button:
  - platform: restart
    icon: mdi:power-cycle
    name: "ESP Reboot"
    entity_category: diagnostic

uart:
  id: uart_bus
  tx_pin: 
    number: GPIO17
    mode:
      input: true
      pullup: true
  rx_pin: 
    number: GPIO16
    mode:
      input: true
      pullup: true
  baud_rate: 256000
  parity: NONE
  stop_bits: 1
  data_bits: 8
  debug:
    direction: BOTH
    dummy_receiver: True
    after:
     delimiter: [0X55, 0XCC]
    sequence:
      - lambda: |-
          if ((millis() - id(last_update_ld2450)) <= 500) { 
            return;
          };
          id(last_update_ld2450) = millis();

          // p1
          int16_t p1_x = (uint16_t((bytes[5] << 8) | bytes[4] ));
          if ((bytes[5] & 0x80) >> 7){
            p1_x -= pow(2, 15); 
          }else{
            p1_x = 0 - p1_x;
          }

          int16_t p1_y = (uint16_t((bytes[7] << 8) | bytes[6] ));
          if ((bytes[7] & 0x80) >> 7){
            p1_y -= pow(2, 15);
          }else{
            p1_y = 0 - p1_y;
          }

          int p1_speed = (bytes[9] << 8 | bytes[8] );
          if ((bytes[9] & 0x80) >> 7){
            p1_speed -= pow(2, 15);
          }else{
            p1_speed = 0 - p1_speed;
          }
          int16_t p1_distance_resolution = (uint16_t((bytes[11] << 8) | bytes[10] )); 

          // p2
          int16_t p2_x = (uint16_t((bytes[13] << 8) | bytes[12] ));
          if ((bytes[13] & 0x80) >> 7){
            p2_x -=  pow(2, 15); 
          }else{
            p2_x = 0 - p2_x;
          }

          int16_t p2_y = (uint16_t((bytes[15] << 8) | bytes[14] ));
          if ((bytes[15] & 0x80) >> 7){
            p2_y -= pow(2, 15);
          }else{
            p2_y = 0 - p2_y;
          }

          int p2_speed = (bytes[17] << 8 | bytes[16] );
          if ((bytes[17] & 0x80) >> 7){
            p2_speed -= pow(2, 15);
          }else{
            p2_speed = 0 - p2_speed;
          }
          int16_t p2_distance_resolution = (uint16_t((bytes[19] << 8) | bytes[18] )); 

          // p3
          int16_t p3_x = (uint16_t((bytes[21] << 8) | bytes[20] ));
          if ((bytes[21] & 0x80) >> 7){
            p3_x -=  pow(2, 15); 
          }else{
            p3_x = 0 - p3_x;
          }

          int16_t p3_y = (uint16_t((bytes[23] << 8) | bytes[22] ));
          if ((bytes[23] & 0x80) >> 7){
            p3_y -= pow(2, 15);
          }else{
            p3_y = 0 - p3_y;
          }

          int p3_speed = (bytes[25] << 8 | bytes[24] );
          if ((bytes[25] & 0x80) >> 7){
            p3_speed -= pow(2, 15);
          }else{
            p3_speed = 0 - p3_speed;
          }
          
          int16_t p3_distance_resolution = (uint16_t((bytes[27] << 8) | bytes[26] )); 

          bool p1_vaild = (p1_x != 0 || p1_y > 0);
          bool p2_vaild = (p2_x != 0 || p2_y > 0);
          bool p3_vaild = (p3_x != 0 || p3_y > 0);

          // zone exlude 1

          int16_t target_count_in_zone_ex1 = 0;

          int16_t zone_ex1_x_min = id(zone_ex1_x_begin).state;
          int16_t zone_ex1_x_max = id(zone_ex1_x_end).state;
          int16_t zone_ex1_y_min = id(zone_ex1_y_begin).state;
          int16_t zone_ex1_y_max = id(zone_ex1_y_end).state;

          bool p1_zone_ex_enter = false;
          bool p2_zone_ex_enter = false;
          bool p3_zone_ex_enter = false;

          if (id(zone_ex1_enable).state){
            if (p1_vaild){
              if (p1_x >= zone_ex1_x_min && p1_x <= zone_ex1_x_max && p1_y >= zone_ex1_y_min && p1_y <= zone_ex1_y_max){
                  p1_zone_ex_enter = true;
                  target_count_in_zone_ex1 ++;
              }
            }
            if (p2_vaild){
              if (p2_x >= zone_ex1_x_min && p2_x <= zone_ex1_x_max && p2_y >= zone_ex1_y_min && p2_y <= zone_ex1_y_max){
                  p2_zone_ex_enter = true;
                  target_count_in_zone_ex1 ++;
              }
            }
            if (p3_vaild){
              if (p3_x >= zone_ex1_x_min && p3_x <= zone_ex1_x_max && p3_y >= zone_ex1_y_min && p3_y <= zone_ex1_y_max){
                  p3_zone_ex_enter = true;
                  target_count_in_zone_ex1 ++;
              }
            }
          }

          bool has_target_in_zone_ex1 = (target_count_in_zone_ex1 > 0);
          
          int16_t all_target_counts = 0;
          if (p1_vaild && !p1_zone_ex_enter){
            all_target_counts ++;
          }
          if (p2_vaild && !p2_zone_ex_enter){
            all_target_counts ++;
          }
          if (p3_vaild && !p3_zone_ex_enter){
            all_target_counts ++;
          }

          bool has_target_in_zone_all = (all_target_counts > 0);

          // zone 1 check

          int16_t target_count_in_zone1 = 0;
          int16_t zone1_x_min = id(zone1_x_begin).state;
          int16_t zone1_x_max = id(zone1_x_end).state;
          int16_t zone1_y_min = id(zone1_y_begin).state;
          int16_t zone1_y_max = id(zone1_y_end).state;

          if (p1_vaild && !p1_zone_ex_enter){
            if (p1_x >= zone1_x_min && p1_x <= zone1_x_max && p1_y >= zone1_y_min && p1_y <= zone1_y_max){
                target_count_in_zone1 ++;
            }
          }
          if (p2_vaild && !p2_zone_ex_enter){
            if (p2_x >= zone1_x_min && p2_x <= zone1_x_max && p2_y >= zone1_y_min && p2_y <= zone1_y_max){
                target_count_in_zone1 ++;
            }
          }
          if (p3_vaild && !p3_zone_ex_enter){
            if (p3_x >= zone1_x_min && p3_x <= zone1_x_max && p3_y >= zone1_y_min && p3_y <= zone1_y_max){
                target_count_in_zone1 ++;
            }
          }
          bool has_target_in_zone1 = (target_count_in_zone1 > 0);

          // zone 2 check

          int16_t target_count_in_zone2 = 0;
          int16_t zone2_x_min = id(zone2_x_begin).state;
          int16_t zone2_x_max = id(zone2_x_end).state;
          int16_t zone2_y_min = id(zone2_y_begin).state;
          int16_t zone2_y_max = id(zone2_y_end).state;

          if (p1_vaild && !p1_zone_ex_enter){
            if (p1_x >= zone2_x_min && p1_x <= zone2_x_max && p1_y >= zone2_y_min && p1_y <= zone2_y_max){
                target_count_in_zone2 ++;
            }
          }
          if (p2_vaild && !p2_zone_ex_enter){
            if (p2_x >= zone2_x_min && p2_x <= zone2_x_max && p2_y >= zone2_y_min && p2_y <= zone2_y_max){
                target_count_in_zone2 ++;
            }
          }
          if (p3_vaild && !p3_zone_ex_enter){
            if (p3_x >= zone2_x_min && p3_x <= zone2_x_max && p3_y >= zone2_y_min && p3_y <= zone2_y_max){
                target_count_in_zone2 ++;
            }
          }

          bool has_target_in_zone2 = (target_count_in_zone2 > 0);

          // zone 3 check

          int16_t target_count_in_zone3 = 0;
          int16_t zone3_x_min = id(zone3_x_begin).state;
          int16_t zone3_x_max = id(zone3_x_end).state;
          int16_t zone3_y_min = id(zone3_y_begin).state;
          int16_t zone3_y_max = id(zone3_y_end).state;

          if (p1_vaild && !p1_zone_ex_enter){
            if (p1_x >= zone3_x_min && p1_x <= zone3_x_max && p1_y >= zone3_y_min && p1_y <= zone3_y_max){
                target_count_in_zone3 ++;
            }
          }
          if (p2_vaild && !p2_zone_ex_enter){
            if (p2_x >= zone3_x_min && p2_x <= zone3_x_max && p2_y >= zone3_y_min && p2_y <= zone3_y_max){
                target_count_in_zone3 ++;
            }
          }
          if (p3_vaild && !p3_zone_ex_enter){
            if (p3_x >= zone3_x_min && p3_x <= zone3_x_max && p3_y >= zone3_y_min && p3_y <= zone3_y_max){
                target_count_in_zone3 ++;
            }
          }
          bool has_target_in_zone3 = (target_count_in_zone3 > 0);

          // public all info
          if (id(target1_x).state != p1_x){
            id(target1_x).publish_state(p1_x);
          }
          if (id(target1_y).state != p1_y){
            id(target1_y).publish_state(p1_y);
          }

          float p1_m_speed = float(p1_speed) / 100.0;
          if (id(target1_speed).state != p1_m_speed){
            id(target1_speed).publish_state(p1_m_speed);
          }
          if (id(target1_resolution).state != p1_distance_resolution){
            id(target1_resolution).publish_state(p1_distance_resolution);
          }

          if (id(target2_x).state != p2_x){
            id(target2_x).publish_state(p2_x);
          }
          if (id(target2_y).state != p2_y){
            id(target2_y).publish_state(p2_y);
          }
          if (id(target2_speed).state != p2_speed){
            id(target2_speed).publish_state(p2_speed);
          }
          if (id(target2_resolution).state != p2_distance_resolution){
            id(target2_resolution).publish_state(p2_distance_resolution);
          }

          if (id(target3_x).state != p3_x){
            id(target3_x).publish_state(p3_x);
          }
          if (id(target3_y).state != p3_y){
            id(target3_y).publish_state(p3_y);
          }
          if (id(target3_speed).state != p3_speed){
            id(target3_speed).publish_state(p3_speed);
          }
          if (id(target3_resolution).state != p3_distance_resolution){
            id(target3_resolution).publish_state(p3_distance_resolution);
          }

          // publish target info
          
          if (id(all_target_count).state != all_target_counts){
            id(all_target_count).publish_state(all_target_counts);
            id(any_target_exsits).publish_state(has_target_in_zone_all);
          }

          if (id(zone1_target_count).state != target_count_in_zone1){
            id(zone1_target_count).publish_state(target_count_in_zone1);
            id(zone1_target_exsits).publish_state(has_target_in_zone1);
          }

          if (id(zone2_target_count).state != target_count_in_zone2){
            id(zone2_target_count).publish_state(target_count_in_zone2);
            id(zone2_target_exsits).publish_state(has_target_in_zone2);
          }

          if (id(zone3_target_count).state != target_count_in_zone3){
            id(zone3_target_count).publish_state(target_count_in_zone3);
            id(zone3_target_exsits).publish_state(has_target_in_zone3);
          }
          
          // zout
          if (id(zone_ex1_target_count).state != target_count_in_zone_ex1){
            id(zone_ex1_target_count).publish_state(target_count_in_zone_ex1);
            id(zone_ex1_target_exsits).publish_state(has_target_in_zone_ex1);
          }

          if (!id(init_zone_publish)){
            id(init_zone_publish) = true;
          }
1 Like

Yes, the current hlkradartool app provides its own set of zone mechanisms, but this one has this behavior:

  • Its include and exclude zones are independent, you canā€™t have both at the same time.
  • Its zones affect the final coordinate output, which means that if include zones are turned on, then only the x and y coordinates will be output for include zones.Whereas for excluded zones, then the targets in the excluded zones act like black holes, resulting in no output for x and y.

Since there is no raw coordinate output, the zone mechanism in ha is independent (for screekā€™s code), which has the advantage that wo m always have access to xy coordinates.This is pretty cool when paired with a map, at the cost, of course, of typing in those numbers is kind of a pain in the ass.
Maybe in the future some improvements could be made that could also show what happens to the regions in the app, I think it might be a good idea.

Currently uncly-yuruā€™s library uses a different idea, exposing the appā€™s settings and the region of judgment, if we understand it correctly.It may then lead to that black hole problem, where the target is only output when it is in the zone.

Weā€™ll continue to feed back to hlk to always have raw coordinate output in the future.And the ability to include both regions + exclude regions everything combination available in the app.

Just wanted to say thanks, new to HA and people mentioning screek helped point me to many useful reading material.

Back to the issue I have, noted on what you shared. However as mentioned I face the issue of the zones in HA reporting clear despite being in the zone. Pictures for your reference.

2a_map

I think itā€™s most likely a negative number problem, if everything looks fine but then it doesnā€™t go into the region, thereā€™s a chance that someone got it wrong in a system where the x-coordinate contains a negative number, in fact -10 is less than -2, and one should write -2 in x-begin and -10 in x-end.

We hope that the next step will be to improve the firmware to automatically handle this kind of easily confused numerical errors, and reduce the numerical stress for everyone.

1 Like

thereā€™s a chance that someone got it wrong
:upside_down_face: Yup that someone is me, thanks all fixed!

Still testing this in my current apartment before my new place is ready, intend to add a BH1750 to this. Hopefully not too difficult

The esphome is powerful and probably easier than you think, good luck.

Someone know where find a case for LD2450 stl to print ?
Thanks

1 Like

I have a case which is with custom ESP board, I think it is not suitable for you, If you tell me what ESP board youā€™re using, maybe I can make one for you, of course, it is free!

i have a esp32-c3 super miniā€¦

1 Like

removed for off topic, this is ESPHome section
just opened a net topic instead

how can you check if the sensor is working in single-target or multi-target mode?
i mean, in the datasheet there is a serial command to set target mode, but no config data seems to be provided on serial (if not as ack on serial command), but when you open the app it is able to understand if the sensor is single or multi target.
What data is it using?
Thanks

1 Like