LD2410 esphome tips

ESPHome
49

I’ve got it working with GitHub - rain931215/ESPHome-LD2410: ESPHome LD2410 mmWave Radar Sensor Custom Component on a nodemcu2 8266. But only when i changed the TX and RX to
RX = GPIO13 and TX=GPIO15
like cmille34 · GitHub
explained here : All sensors are "Unknown" after compilation and upload · Issue #5 · rain931215/ESPHome-LD2410 · GitHub :

uart:
  id: uart1
  tx_pin: GPIO15 #TX
  rx_pin: GPIO13 #RX
3 Likes
51

See Andreas’s video on the sensor and associated configuration/engineering tools: 24GHz Radar Presence Detector that Works (LD2410) - YouTube

Also, see the data sheet for the detail on range, etc: https://github.com/ESPresense/ESPresense/files/9189632/HLK-LD2410.user.manual.V1.02.pdf

And the software: HLK-LD2410-24G - 资料下载 - 海凌科电子

1 Like
52

Just got the new LD2410C-P with easier to work headers!

IMG_2237
IMG_22371920×1440 201 KB

53

Btw is that at the bottom left a LED? If it is it’s not turning on, but the sensor is working ok so far…

54

I see you are also using D1 mini (v3.0). I have version 4.0. I can’t get data with this script. When debugging UART, I get data on both TX/RX and GPIO15/GPIO15 pins. However, the entities still remain “unknown”.
The sensor, when connected to USB using the manufacturer’s tool, works correctly.

Any advice what I might be doing wrong?

LD2410_d1mini
LD2410_d1mini2535×1180 253 KB

55

I get data on both TX/RX and GPIO15/GPIO15 pins

I am assuming you are using GPIO15 & GPIO13?? For both of the setups, I used what the op has provided (RX & TX pins). Have already tried these pins and it didn’t work for you??

uart:
  id: uart1
  tx_pin: TX
  rx_pin: RX
  baud_rate: 256000 
  parity: NONE
  stop_bits: 1
  debug:
    direction: BOTH
    dummy_receiver: false
    after:
      delimiter: [0xF8,0xF7,0xF6,0xF5]
56

my UART configuration looks like this (TX/RX):

[11:20:30][C][logger:236]:   Hardware UART: UART0
[11:20:30][C][uart.arduino_esp8266:102]: UART Bus:
[11:20:30][C][uart.arduino_esp8266:103]:   TX Pin: GPIO1
[11:20:30][C][uart.arduino_esp8266:104]:   RX Pin: GPIO3
[11:20:30][C][uart.arduino_esp8266:106]:   RX Buffer Size: 256
[11:20:30][C][uart.arduino_esp8266:108]:   Baud Rate: 256000 baud
[11:20:30][C][uart.arduino_esp8266:109]:   Data Bits: 8
[11:20:30][C][uart.arduino_esp8266:110]:   Parity: NONE
[11:20:30][C][uart.arduino_esp8266:111]:   Stop bits: 1
[11:20:30][C][uart.arduino_esp8266:113]:   Using hardware serial interface.

I also tried on the configuration on the GPIO15/GPIO13 pins. Then I was getting the same data when debugging the UART protocol.

The problem is that the entities don’t show any data :frowning:

57

Actually the data you see does not look like the data that a LD2410 typically sends, you should see groups of 0xF4 0xF3 0xF2 0xF1 and 0xF8 0xF7 0xF6 0xF5.

58

I’m having the same problem. Did you find any solution on this ?

59

I waa having this problem the other day. It’s my first ESP32 project so quite noob on electronics.

I had 2 problems:

  1. I wasn’t using the correct RX and TX pins. If you use the default ones, you need to disable the logger setting baud_rate: 0 as a logger property. If you want to use the others, you need to check for your specific board datasheet and find the correct pins
  2. I’m so noob that I didn’t notice that the RX and TX pins are a loop, so the RX pin of the sensor goes to the TX pin of the board and viceversa.

As soon as I did that, the entities were not showing as Unknown anymore.

60

Today I managed to solve my problem.
Thanks to @amandel’s answer, I understood that there must be something wrong with the LD2410 module. I reconnected it to the PC via the USB converter and tried to read the data using the manufacturer’s program. LD2410 is dead … I prepared a new piece and it works without any problems, both on the TX / RX and D7 / D8 pins.

@Hitesh_Singh - try connecting a new LD2410, soft is OK. Or try to read the data from the old one using the UART/USB converter and the manufacturer’s program (LD2410 Tool). If the old one works with the PC, you have a problem with the electrical/signal connections.

2 Likes
61

Managed to install this nice sensor in my home. It is controlling the light in toilet (where sometimes you “stay” with little movements for longer time - not detected by typical PIR sensor) and at this point is connected only with OUT pin to ESP8266.
To connect to pins I used JST GH 1,25 mm 5 PIN connector:

obraz
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Before mounting in final case (I used broken PIR sensor case) I taped it in the place where it will be, connected to laptop and tested/changed sensors ranges setting so it covers “no-moving” sitting person.
Then put into box, close it and start “live testing” period - ongoing… :wink:

While testing, it was also working connected with UART (Tx - GPIO01, Rx - GPIO03) but I decided that it seem too complex for this particular need. I was also concerned about load it generated for ESP. Once official ESPHome support will be available I may reconsider.

62

Interesting! Does this have the same specs (angle/range) as the ‘normal’ 2410?

63

I just released a small box to hold this module together with a D1 mini.
It uses the JST connector to hold the module in place and you can rotate it horizontally.
You can find it on thingiverse

IMG_20230112_102548-500
IMG_20230112_102548-5003648×2736 483 KB

11 Likes
64

honestly I have no idea but the datasheet they link to seems the same (even uses the old photo)

1 Like
65

makes sense. Too bad! I’m looking for one with better detecting range like the SEN0395 from dfrobot but for Hi-link prices…

66

Now HA has an BLE integration for the LD2410. Looks like you dont need an D1 mini.
Power the thing and it gets integrated using BLE.

5 Likes
67

Who know, what this Setting mean?

IMG_20230205_131346
IMG_20230205_1313461080×2307 399 KB

Appeared after firmware and App update.

68

The new update ESPhome brought the natively supported LD2410 sensor.
Has anyone tried it, how does it work?

69

I have tried with an nodemcu, but no luck yet, i will try to give 5V with external Power this evening