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HLK-LD2410 24GHz mmWave presence sensor~

This feature is not included in precompiled binaries

When compiling your build add the following to user_config_override.h: 

#ifndef USE_LD2410
#define USE_LD2410
#endif

This feature is designed only to work with HLK-LD 2410, HLK-LD2410B and HLK-LD2410C modules. To work with the HLK-LD2410S module see here.

HLK-LD2410(B) HLK-LD2410C

Configuration~

Wiring~

HLK-LD2410-wiring

HLK-LD2410(B,C) ESP
GND GND
VCC 5V
TX GPIOx
RX GPIOy
OUT GPIOz

Warning: The power supply voltage of the module is 5V, and the power supply capacity of the input power supply is required to be greater than 200mA.
The module IO output level is 3.3V!

Tasmota Settings~

In the Configuration -> Configure Module page assign:

  • GPIOx to LD2410 Tx
  • GPIOy to LD2410 Rx
  • GPIOz to Switch or Button
Settings example

Usage~

Tasmola is ready to read the status packet from the LD2410 module

Console output: 

12:52:46.234 RSL: SENSOR = {"Time":"2024-11-09T12:52:46","LD2410":{"Distance":[200.0,181.0,144.0],"Energy":[13,100]}}

If an object is detected, a report will be sent every second. You can disable sending every second by setting SetOption160 to 1

Commands~

Set factory default settings: 

LD2410Duration 0

Set no-one duration in seconds (default 5): 

LD2410Duration 1..65535

Set moving distance sensitivity for up to 9 gates (at 0.75 meter interval): 

LD2410MovingSens 50,50,40,30,20,15,15,15,15

Set static distance sensitivity for up to 9 gates (at 0.75 meter interval): 

LD2410StaticSens 0,0,40,40,30,30,20,20,20

Engineering mode~

Start/stop engineering mode: 

LD2410EngineeringStart
LD2410EngineeringEnd

Read last sensors received in engineering mode command and output: 

LD2410Get

13:40:21.997 RSL: RESULT = {"LD2410":{"Moving energy":[13,12,10,9,9,8,1,4,4],"Static energy":[0,0,100,100,45,32,147,15,5],"Light":103,"Out_pin":1}}

In engineering mode, the main page additionally displays the obtained values for moving and static targets:

Light sensor available if installed on board

Rules~

You can use the LD2410 trigger to create rules, example: 

rule1 ON LD2410 DO state ENDON

If SetOption160 is set to 1 rules wii be triggered only in log interval. Set SetOption160 to 0 for trigger on detected piople