HLK-LD2450 Initial experiments to connect to HomeAssistant

elik745i · November 30, 2023, 1:03pm

In short, your choice is yours, my message is simply a note of caution. Now, it’s up to you to decide how you want to proceed with your inventions.

Protoncek · November 30, 2023, 2:58pm

I totally understand you fear, i guess i would be afraid, too if my house would catch a fire. I’m just saying that… say, people won’t stop driving because one driver has been killed in an accident…it happens, sure, but it’s very unlikely, especially if you take all needed precautions.

elik745i · December 1, 2023, 12:34pm

yea, but you would take precautions based on bad experiences others had, thats my point. Better to learn on others mistakes ))

Dazza4 · December 4, 2023, 1:32am

Thanks, I pulled it together but as you can see, it just shows as unavailable.

I added the tx and rx pins to GPIO04, and 05 on the c3 mini board, and updated the yaml with the new values, i also removed the bh1750 and I2C as it placed everything into a watchdolg bootloop.

any ideas on why everthing is disabled?

eric3616191 · December 4, 2023, 8:52am

How do I add it? Thanks!

uncle-yura · December 4, 2023, 12:42pm

I’m not sure I can help, it’s not my firmware. Maybe @screek-workshop will help you.

uncle-yura · December 4, 2023, 12:47pm

If you use my firmware, you can see how to add regions here. Next, you need to add the plotly-graph widget and manually write the points for the regions. You can learn how to add a widget by reading this thread.

screek-workshop · December 4, 2023, 1:15pm

The yura library is great and has simpler features that could be a direction to try.

For those who want to build a 2A if they want to use hardware similar to ours, consider these possibilities:

Make sure to remove the i2c part as gpio11 can cause errors without unlocking, also without light sensor access it can cause trouble.
Make sure it’s a c3mini (i.e. lite) without the ttl chip, using the native c3’s usb-jtag as the serial driver.

Dazza4 · December 5, 2023, 3:32am

I just installed your firmware, and everything is working. How do i get it to connect to esphome? Mine shows as offline even though the sensor is working in devices

Dazza4 · December 5, 2023, 3:45am

thanks I managed to get it working, now just trying to get it to connect to esphome. It connects as a device fine just not esphome, where it shows as offline all the time.

Also, where can we get the stl file from?

marcusone · December 5, 2023, 9:55pm

Please share the STL files, or 3d models even better! Thank you!

elik745i · December 9, 2023, 10:16am

what firmware you talking about?

ferbulous · December 9, 2023, 12:52pm

Anyone mounted the sensor in the ceiling?
Kinda like on the left, how is the coverage?

Thinking of connecting the sensor to sonoff basic to skip long usb cable to the outlet

elik745i · December 9, 2023, 3:55pm

Nice I got mine working too. Does anyone managed to make a card to show the map like in the original application?

athua · December 10, 2023, 10:59am

I wrote a card based on the Plotly Graph Card which can be installed from HACS.

github.com

athua/ha-utils/blob/12cbb61877e6bc143637d02ff5113f43713a3245/LD2450-map-chart.yaml

# The following code for a lovelace card requires installation of the Plotly Graph Card from HACS in Home Assistant.
# To use this card, add a manual lovelace card and paste the follow code in ensuring to replace the sensor names with your sensor's name.
type: custom:plotly-graph
title: Target Positions
refresh_interval: 1
hours_to_show: current_day
layout:
  height: 230
  margin:
    l: 50
    r: 20
    t: 20
    b: 40
  showlegend: true
  xaxis:
    dtick: 1000
    gridcolor: RGBA(200,200,200,0.15)
    zerolinecolor: RGBA(200,200,200,0.15)
    type: number
    fixedrange: true

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ChreeceGR · December 12, 2023, 11:25am

Be aware!
LD-2461
Is coming…

simclancy · December 12, 2023, 12:37pm

Urgh but 2450 hasnt really been picked up by the masses yet

ferbulous · December 12, 2023, 1:32pm

What is the difference?
Does it still do multi tracking like LD2450 with better static detection?

chaisaeng · December 12, 2023, 4:42pm

it look promising track up to 5 targets and longer still target rang detection up to 5 m motion trigger time < 0.5 s 15s maintain target before removing from presence detected status. interesting? also can determine target movement direction.

chaisaeng · December 12, 2023, 4:50pm

They already sell it in aliexpress 13.5USD + Shipping