LD2420 Human Presence Sensor

#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/gpio.h"

#define RADAR_OUT_PIN GPIO_NUM_18 // LD2420 OUT pin, matches the wiring above

void app_main(void)
{
    gpio_set_direction(RADAR_OUT_PIN, GPIO_MODE_INPUT);
    printf("LD2420 Presence Detection\n");

    while (1) {
        if (gpio_get_level(RADAR_OUT_PIN)) {
            printf("Presence detected\n");
        } else {
            printf("No presence\n");
        }
        vTaskDelay(pdMS_TO_TICKS(500));
    }
}

uart:
  id: uart_bus
  tx_pin: GPIO17
  rx_pin: GPIO16
  baud_rate: 115200

ld2420:

text_sensor:
  - platform: ld2420
    fw_version:
      name: LD2420 Firmware

sensor:
  - platform: ld2420
    moving_distance:
      name : Moving Distance

binary_sensor:
  - platform: ld2420
    has_target:
      name: Presence

select:
  - platform: ld2420
    operating_mode:
      name: Operating Mode

number:
  - platform: ld2420
    presence_timeout:
      name: Detection Presence Timeout
    min_gate_distance:
      name: Detection Gate Minimum
    max_gate_distance:
      name: Detection Gate Maximum
    # See "Number" section below for detail
    gate_select:
      name: Select Gate to Set
    still_threshold:
      name: Set Still Threshold Value
    move_threshold:
      name: Set Move Threshold Value

button:
  - platform: ld2420
    apply_config:
      name: Apply Config
    factory_reset:
      name: Factory Reset
    restart_module:
      name: Restart Module
    revert_config:
      name: Undo Edits

[env:esp32dev]
platform = espressif32
board = esp32dev
framework = arduino
monitor_speed = 115200

#include <Arduino.h>
#define RADAR_OUT_PIN 18 // LD2420 OUT pin (GPIO18, matches the wiring above)

void setup() {
    Serial.begin(115200);
    pinMode(RADAR_OUT_PIN, INPUT);
    Serial.println("LD2420 Presence Detection");
}

void loop() {
    if (digitalRead(RADAR_OUT_PIN) == HIGH) {
        Serial.println("Presence detected");
    } else {
        Serial.println("No presence");
    }
    delay(500);
}

from machine import Pin
import time

# LD2420 OUT pin (GPIO18, matches the wiring above)
radar_out = Pin(18, Pin.IN)

while True:
    if radar_out.value():
        print("Presence detected")
    else:
        print("No presence")
    time.sleep(0.5)