avdl72 / esp_motion_mmwave

LD2410 mmwave Motion detection in ESPHome for Home Assistant . Can be combined with temperature, humidity and lux sensor

Forked from kippesikgithub (thanks!) Added some links and info, and adjusted to my needs

LD2410B mmwave Motion detection with temperature and humidity sensor for ~€8,- (housing: ~€6,-)

LD2410B mmwave Motion detection + ESP8266 (Wemos d1 mini) Board in ESPHome for Home Assistant. Can be combined with temperature, humidity and lux sensor, but I don't use lux sensor here. The LD2410B can be updated to measure luminance as well (I've read somewhere)

Shopping list

• ESP8266 (Wemos d1 mini)(E 2.00): https://nl.aliexpress.com/item/4001157391459.html

• LD2410B (with Bluetooth) sensor (E 3.50): https://a.aliexpress.com/_mqyYb5S

• cable for LD2410B (E 1.50): https://nl.aliexpress.com/item/1005004971647691.html

• DHT11 digital Humidity & Temperature sensor (E 1.00) https://nl.aliexpress.com/item/32840892862.html

• 3D-printed housing: https://www.thingiverse.com/thing:5631878 Price example: 6x housing+lid, white, € 35 all-in, (printics.nl)

Step 1

Download this repository: https://github.com/PeterKawa/esp_motion_mmwave/archive/refs/heads/main.zip

Step 2

A.

copy the code from the downloaded file uart_read_line_sensor_ld2410v3.h into a new file in the /config/esphome directory, using for example 'Studio Code server';

Do the same with the downloaded file presence-woonkamer_git.yaml

Or B.

use the 'File editor' and upload those 2 files to /config/esphome

Step 3

In HA, install the ESPhome add-on;

Extended ESPhome how-to: https://esphome.io/guides/getting_started_hassio.html

Pin outs

How to connect the stuff

Pinout ESP8266 (Wemos d1 mini) Board

Step 4

Connect the LD2410 cable:

ESP8266 | LD2410B

5V <-> VCC
GND <-> GND
TX <-> RX
RX <-> TX
D7 <-> OUT

Step 5

Solder three wires to the DHT11:

ESP8266 | DHT11

3.3V <-> VDD
GND <-> GND
D2 <-> DATA

Something like this:

Step 6

Make sure you change all the !secret values, or create them in your /config/esphome/secrets.yaml

Step 7

Merge (do NOT overwrite), so MERGE the example yaml code (presence-woonkamer_git.yaml) to the yaml code of a new device in ESPhome. You should keep the unique device keys and password stuff; In the end, the new device yaml should look the same as the example yaml, except from these details:

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

ota:
  password: "KeepOtaPassword"

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "KeepDeviceNameAsSsid"
    password: "KeepGeneratedPassword"

Once finsihed and sensor is online, you can add it in Home assistant

Home Assistant

Web Config

You can monitor the distance & sensitivity by temporary enabling show_target_stats

Impression

Still quite small:

And hidden from view inside a (fake) flower pot ;-)

Other sources used

https://community.home-assistant.io/t/mmwave-wars-one-sensor-module-to-rule-them-all/453260/2

https://github.com/rain931215/ESPHome-LD2410