mmWave Human detection kit and MR24HPB1 sensor

Products & Technology XIAO
1

Hi,
I bought the mmWave Human detection kit. Everything works as expected in HomeAssistant and ESPHome.
Now I bought as a replacement a 24GHz mmWave Sensor - Human Stationary Presence Module (MR24HPB1) sensor and replace the original one. In HomeAssitant the sensors are unavailable.
So I tried the code for ESP home from this web page: GitHub - thefipster/esphome-mmwave-sensors: ESPHome integration for mmWave Sensors from Seeed Studio

It does not work. The ESPHome logs shows this error. Any idea where to find the ESPHome config ?

ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0x15 (USB_UART_CHIP_RESET),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x4205b878
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd6100,len:0x438
load:0x403ce000,len:0x918
load:0x403d0000,len:0x24e4
entry 0x403ce000

Here my config file for ESPHome. I added the esp32: part and the rx and tx pin based on the orginal ESPHome config for the buildin mmWave sensor.

substitutions:
  device_id: test-mmwave-mr24hpb1
  device_name: Test mmWave MR24HPB1
  header_frame: headers/mr24hpb1_frame.h
  header_sensor: headers/mr24hpb1.h
  uart_rx_pin: "4"
  uart_tx_pin: "5"

esphome:
  name: ${device_id}
  friendly_name: ${device_name}
  includes:
  - ${header_frame}
  - ${header_sensor}

esp32:
  board: esp32-c3-devkitm-1
  variant: ESP32C3
  framework:
    version: 4.4.5
    sdkconfig_options: {}
    advanced:
      ignore_efuse_mac_crc: false
    components: []
    source: ~3.40405.0
    platform_version: platformio/[email protected]
    type: esp-idf


logger:
  logs:
    sensor: INFO
  
uart:
  id: soft_uart2
  baud_rate:  9600
  rx_pin: ${uart_rx_pin}
  tx_pin: ${uart_tx_pin}

sensor:
  - platform: custom
    lambda: |-
      auto mr24hpb1 = new MR24HPB1(id(soft_uart2)); 
      App.register_component(mr24hpb1);
      return {mr24hpb1->presence_sensor, mr24hpb1->motion_sensor, mr24hpb1->proximity_sensor, mr24hpb1->body_sensor};
    sensors:
      - id: presence_sensor
        name: Internal Presense Sensor
        internal: true
        on_value:
          - binary_sensor.template.publish:
              id: presence_template
              state: !lambda return x > 0;
      - id: motion_sensor
        name: Internal Motion Sensor
        internal: true
        on_value:
          - binary_sensor.template.publish:
              id: motion_template
              state: !lambda return x > 0;
      - id: proximity_sensor
        name: Proximity
        state_class: measurement   
      - id: body_sensor
        name: Body Movement
        state_class: measurement   
        
binary_sensor:
  - id: presence_template
    platform: template
    name: Presence
    device_class: occupancy
  - id: motion_template
    platform: template
    name: Motion
    device_class: motion
1 Like
2

Hello, I didn’t see the configuration of packages in your configuration file. Is it changed to packages/mr24d.yaml?

image
image1230×457 32.1 KB

3

Hello,
thanks for your question. I copied the packages to my homeassistant and used the following config:

substitutions:
  device_id: my-mr24hpb1-sensor
  device_name: My MR24HPB1 Sensor
  
esphome:
  name: seeek_studio_mmwave
  platformio_options:
    board_build.flash_mode: dio
    board_build.mcu: esp32c3


esp32:
  board: esp32-c3-devkitm-1
  variant: esp32c3
  framework:
    type: esp-idf


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

ota:
  password: "****"

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


packages:
  device_base: !include packages/mr24hpb1.yaml

In addition in changed the rx and tx to GPIO 4 and 5 in the mr24hpc1.yaml

substitutions:
  device_id: test-mmwave-mr24hpc1
  device_name: Test mmWave MR24HPC1
  header_frame: headers/mrx_frame.h
  header_sensor: headers/mr24hpc1.h
  uart_rx_pin: "4"
  uart_tx_pin: "5"

Now I am able to see the following sensors:

image
image337×333 12.3 KB

4

Just out of curiosity - why do you want to replace MR24HPC1 sensor with MR24HPB1?

Seeed Studio site stated:
This product is in EOL phase, click here to view the new version
and new version is MR24HPC1

Thanks

5

Did you manage to change sensitivity and/or max distance?
I see exactly the same sensors, but I do not see any available settings

6

hello,
is that module working with esp32 CP2104 ?

thanks!

7

@Fuchsbau
please could you advise here?

Thanks

8

Hi,
I used the mmWave Human detection kit from Seeedstudio. I have no clue which ESP32 is used in this kit.

9

Hi there,

From the launch page…
Powered by Seeed Studio XIAO ESP32C3, it supports Wi-Fi/BLE connectivity and offers precise human detection via mmWave sensors. Seamlessly connect grove modules for added features. Achieve easy setup for Home Assistant within 1-2 minutes, coupled with convenient wireless Over-The-Air (OTA) updates. Enable extensive versatility with replaceable mmWave sensors. Ideal for customize smart home automation, detect intrusions, and monitor the well-being of the elderly.
"

HTH
GL :slight_smile: PJ :v:

10

@PJ_Glasso most of the esp32 modules support wifi/ble…

the question was if that MR24HPB1 sensor works with any esp32… ?

thanks

11

… seems dead thread? :((

or anyone any view?

12

The Answer is " YES " works with every ESP and or Xiao :+1:

HTH
GL :slight_smile: PJ :v:

13

@PJ_Glasso appreciate your advise.

Maybe one dumb question, once i connect it to my ESP32 Wroom Development Board, is there anything specific i have to flash so it will be integrated with my HA?

thanks

14

Hi there,

No such thing… Yes hit the WiKi and read that to start,

there’s a HA section on some of the other XIao’s as well pretty much all applies
Check out the Xiao Relay board (single channel), lots and ESP_easy code works there too!

HTH
GL :slight_smile: PJ :v:

15

hello,
for a what purpose is that relay board? or whats the connection with presence sensor? thanks!

16

Hi there,

So it has a lot of HA stuff for it , you may find the info useful
just for some additional HA configurations on how they are setup.
The yaml files etc.
more is better when it comes to HA and this hardware.

HTH
GL :slight_smile: PJ :v: