HLK-LD2450 Initial experiments to connect to HomeAssistant

i’d be interested too.
i mean, just the sensor with the bluetooth antenna
did you find anything? it seems i can find only enclosures with also an esp attached…

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im using the screek esphome config on a custom device and have been testing using its exclude zone to mask out my bed so i can have the light still come on if someone comes in the room at night.

this covers the time when i was actually in bed (night mode is my old system for disabling motion detection). as you can see the exclude zone (my bed) is showing as occupied most of the night with the main sensor showing a few false triggers. i think with some tuning to the exclude zone and maybe a bit of a trigger delay at night it would be fully possible to make this reliable enough to us

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where have you located the sensor?

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in the corner of my bedroom

S────────────┐
│DDDDD      ╱
│            │
│            │
│BBB         │
└────────────┘

(S=sensor, D=desk and B=bed. sorry, this was easier than trying to draw it with a mouse)

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I would like to install ld 2450 on esp8266 but I can’t find a firmware can you recommend one to me

There are quite a number of different external integrations that have been developed for the LD2450. I’m not sure however if anyone has tried using an esp8266 as most of the discussions has been around using ESP32 boards.

I personally based my YAML config around the SCREEK implementation:

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Hello, can you help me with distance meauserment on ld2450? I try to tweak some settings via serial tool (sscom), but i receive no distance signal (it stays same all time). Using HLK Radar tool working fine, but for my project i need serial data. Thanks in advance

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How did you make that radar card in your screenshot? Can you share the sauce? Pretty neat!

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In our experience you can get the output with proper wire connections, if not, consider making a pull-up resistor to see if it improves.

The core of the map’s display comes from athua’s code (he was smart enough to make the generated core code and share it), and we made some very minor tweaks as well as a handy online code generation tool. There are also some video tutorials and other stuff, so I hope that helps.

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Yes, we simply integrated an additional light sensor into the 2A.

In the most recent revision of the protocol, version 1.03 (released 10/23, link), methods are provided that can be queried.

I apologize for the Chinese characters, but the protocol command is 0x0091

thanks a lot, i need a way to translate it to implement in ble :smiley:

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good luck:)

Hey I’m just now reading the blog but can’t get my config to compile in ESPHome and wanted to post my log file and yaml for the build asap. The sooner I get it up the sooner someone might see it and ask some qualifying questions to start trying to overcome this challenge.

Hope anyone is having a good week and thanks for taking the time to read my post.

Jeff

This config is titled for a ld2410c but it is for a ld2450

Log files from ESPHome compile attempt

Link to similar post I made on ld2410 tips page and someone mentioned this page

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Hi @screek-workshop not related to HLK-2450, but has there been an update on integrating HLK-6001 to esphome?

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Hi, due to being rather busy lately, we tested it on pc and it sometimes spawns ghosts but disappears quickly, the ghosts also usually split into more than one with one person, but overall it’s pretty good, haven’t noticed ghosting when there’s no one around.
We haven’t had a chance to test it with eight people yet, and the parsing hasn’t been done yet.

You may get more responses if you post your YAML here rather than on protected Google docs pages where people need to request for access to view it.

If the YAML and logs contain private information, you can mask them out to maintain your privacy.

Yeah I never post docs so was not aware this was an issue, thanks for pointing that out. I just didn’t want to make such a huge post, but I don’t know a way to post a publicly accessible link without researching instructions on how to do this. My background is in medicine but I enjoy smart home tech and am slowly learning to write code and have been running HA in some form or another since like 7 years so know a decent amount. Anyway, I’ll post the yaml files asap.

Does anybody know the name of the type of the alternative pin connector on the LD2450? I think it might be called a JST connector but I’m still researching. Apparently the pin pitch size and number of pins is required for proper siding also. According to the description on Amazon it is a serial port tool with pin pitch is 1.5mm and 4 pins.