Sergej 1

• asked Dec 2, 2025

HLK-B40 change serial parameters

Good day! There is a way to change serial parameters of HLK-B40? I found a possibility to change the baudrate, but there is no possibility to change, for example, the parity. As I see in the technical description of HLK-B40: data bit is 8, ...

hlk-b40

0 votes

1 answers

59 views

Camilo 1

• asked Dec 2, 2025

ld6002A firmware

We are recently testing the LD6002 for vital signs detection. The problem is that when the target remains still and the presence detection is lost, the total phase, breath phase and hearth phase signals stop. Is it possible to enable at lea...

firmware ld6002

0 votes

2 answers

61 views

Adam 1

• asked Nov 28, 2025

LD2451 - is logic 5V tolerant?

I see the datasheet states that the IO output levels are 3.3V but is the module 5V tolerant at the UART RX?

ld2451

0 votes

0 answers

40 views

Adam 1

• asked Nov 23, 2025

LD1115H-24G - Spectral Line Position

What is the meaning of "spectral line position" in the information provided via the UART interface on the LD1115H?

ld1115h

0 votes

1 answers

33 views

Adam 1

• asked Nov 23, 2025

LD1115H-24G - User Manual Command List Query

Hello - referring to the v1.2 User Manual (2021-12-06) for HLK-LD1115H-24G. The document says configuration commands are: th1, th2, dtime, mov_sn, occ_sn, save, get_all. BUT when "get_all" is sent, the returned values are like: th1 ...

ld1115h

0 votes

1 answers

26 views

Lieven 1

• asked Nov 19, 2025

hlk-7628n Factory firmware

hi, i am looking for the factory wet firmware. uboot still booting but the wrong firmware got flashedprevious

wrt-firmware

0 votes

4 answers

118 views

Adam 1

• asked Nov 18, 2025

LD012 Re-programming

Hello! The user manual for HLK-LD012-5G states: The state matches the specific resistance on the module to select the corresponding gear or use the external MCU reserved on the module to rewrite the internal parameters. But I cannot find do...

ld012

0 votes

1 answers

33 views

Vicbot 1

• asked Nov 18, 2025

The official firmware of HLK-7688A module.

Hello, I found your firmware from the link below: [https://drive.google.com/drive/folders/1fNV08Eu1_OCQUpqZ8By9CD68w4Ibh8fZ] Is the firmware marked in green box, named as "7688A openwrt.bin" your official firmware for HLK-7688A modu...

hlk-7688a

0 votes

0 answers

49 views

Vicbot 1

• asked Nov 18, 2025

My HLK-7688A module does not open web configuration page.

Hello, I recently bought your HLK-7688A module from Aliexpress, and I also referred your user's manual below explaining how to open web configuration page: Microsoft Word - 7628N user manual.doc [https://fccid.io/2AD56HLK-7628N/User-Man...

hlk-7688a

0 votes

1 answers

65 views

muhammed Dogan 11

• asked Nov 17, 2025

FM225 Face Recognition module Image Capture feature

Hi, We bought your FM225 face recognition module and we want to use it for capturing image with UART commands but module reject 0x71, 0x72, 0x74 commands. We tried it also with encryption but encryption failing. we couldnt communicate with ...

fm225-

1 votes

2 answers

112 views