mmWave for XIAO to Home Assistant via Bluetooth
Introduction
24GHz mmWave Sensor for XIAO - Human Static Presence is a expansion board for Seeed Studio XIAO series. It is an antenna-integrated, high-sensitivity mmwave sensor that is based on the FMCW principle. Combined with sensor signal processing and accurate human body sensing algorithms, it can identify human bodies in motion and stationary states.
This chapter primarily introduces how the 24GHz mmWave Sensor for XIAO connects to the HA via Bluetooth. For detailed functional features of the 24GHz mmWave Sensor for XIAO, you can refer to here.
All contents of this Wiki apply only to 24GHz mmWave for XIAO and may not be used on other millimetre wave sensors.
Getting Started
Hardware Preparations
In this article, we will use mmWave for XIAO in conjunction with the XIAO ESP32C3 to plug it into Home Assistant for the sake of aesthetics and ease of wiring. if you want to follow this tutorial to the letter, then you will need to prepare the following modules.
| Seeed Studio XIAO ESP32C3 | 24GHz mmWave for XIAO |
|---|---|
 |  |
The sensor is designed for XIAO compatibility, so in general, if you want to use this sensor, you need to prepare an XIAO and install the female header row pin for the sensor. When connecting to the XIAO, please pay special attention to the installation direction of the sensor, please do not plug it in backwards, otherwise it is likely to burn the sensor or the XIAO.
The correct direction to follow is that the antenna of the sensor should face outwards.
After confirming that the connection direction is correct, you can connect the USB-C type cable to the computer or 3.3V power supply, and the sensor will start to work.
If you don't have an XIAO on hand at the moment, then you have the option of powering the mmwave for XIAO separately by connecting TTL to its 3.3V pin and GND pin, which can also be done using the content of this tutorial. For this tutorial, there is no need to use the RX and TX pins.
Software Preparations
If you haven't installed HomeAssistant yet, you can refer to the official HomeAssistant tutorial by clicking here.
Procedures
Step 1. Discovery Device
In Home Assistant, click the setting in the lower left corner, select Devices&Services in the center.
In the Discovered zone, there will be a sensor icon, click configure.
A popup window will appear, click submit.
You will see a successful configuration popup, click finish.
Step 2. Configurate Device
In the configured zone, click ld2410_ble.
Once you are in the sensor settings page, click 1 device.
Add the sensor's return value to the dashboard.
Select ADD TO DASHBOARD in the popup window.
Finally, click overview in the upper left corner, you will see the mmwave-for-xiao sensor data successfully displayed on the dashboard. So far the mmwave for xiao sensor has been successfully connected to the Home Assistant.
Next, you can get creative with your automation!
mmWave for XIAO to Home Assistant via Wifi using ESPHome
The following yaml file connects a Seeed XIAO ESP32S3 Sense with Radar module to Home Assistant, using the ESPHome firmware:
# Configuration for ESPHome
esphome:
# Name of the ESP32-S3 device
name: "seeed-xiao-esp32s3-cam"
# PlatformIO build options
platformio_options:
build_flags: -DBOARD_HAS_PSRAM
board_build.arduino.memory_type: qio_opi
board_build.f_flash: 80000000L
board_build.flash_mode: qio
# Configuration for ESP32 board
esp32:
board: esp32-s3-devkitc-1
framework:
type: arduino
# Enable logging
logger:
# Enable Home Assistant API - use your api and password
api:
encryption:
key: ""
ota:
- platform: esphome
password: ""
# Wi-Fi configuration - fill with your data
wifi:
ssid: ""
password: ""
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Xiao-Esp32s3 Fallback Hotspot"
password: ""
# Captive portal configuration
captive_portal:
# Configuration for the ESP32 Camera
esp32_camera:
id: espcam
name: Xiao Cam
external_clock:
pin: GPIO10
frequency: 20MHz
i2c_pins:
sda: GPIO40
scl: GPIO39
data_pins: [GPIO15, GPIO17, GPIO18, GPIO16, GPIO14, GPIO12, GPIO11, GPIO48]
vsync_pin: GPIO38
href_pin: GPIO47
pixel_clock_pin: GPIO13
resolution: 800x600
# Configuration for the ESP32 Camera Web Server
esp32_camera_web_server:
- port: 8080
mode: stream
- port: 8081
mode: snapshot
# Configuration for the 24GHz mmwave XIAO Radar
ld2410:
id: ld2410_radar
uart:
tx_pin: GPIO4
rx_pin: GPIO3
baud_rate: 256000
parity: NONE
stop_bits: 1
number:
- platform: ld2410
timeout:
name: Radar Timeout
max_move_distance_gate:
name: Radar Max Move Distance
max_still_distance_gate:
name: Radar Max Still Distance
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
binary_sensor:
- platform: ld2410
has_target:
name: Radar Target
id: radar_has_target
has_moving_target:
name: Radar Moving Target
has_still_target:
name: Radar Still Target
sensor:
- platform: ld2410
moving_distance:
name: Radar Moving Distance
id: moving_distance
still_distance:
name: Radar Still Distance
id: still_distance
moving_energy:
name: Radar Move Energy
still_energy:
name: Radar Still Energy
detection_distance:
name: Radar Detection Distance
id: radar_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
Tech Support & Product Discussion
Thank you for choosing our products! We are here to provide you with different support to ensure that your experience with our products is as smooth as possible. We offer several communication channels to cater to different preferences and needs.