Human presence detection with LD2410 sensor and ESP32 - Basic Guide
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- Опубликовано: 17 окт 2024
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In this video, I'm looking at the LD2410 mmWave human body proximity sensor. The sensor operates at 24GHz and is typically used to detect human presence.
Opposing to how usual PIR sensors work, the biggest advantage of this sensor is that it can also detect human presence even when the person is not moving so we can detect someone sleeping in a bed for example, or sitting on a couch.
In the video, I explore how we can read the sensor data via serial and how we can interact with it through an ESP32 to control output and an LED as an example.
Tools and materials used in the video:
LD2410C Sensor with USB to Serial - s.click.aliexp...
LD2410B Sensor - s.click.aliexp...
ESP32 Development Board - s.click.aliexp...
FireBeetle ESP32 C6 Development Board - s.click.aliexp...
USB to Serial Adapter - s.click.aliexp...
LED Kit - s.click.aliexp...
Soldering Station - s.click.aliexp...
Dupont Wires - s.click.aliexp...
Multimeter - s.click.aliexp...
LD2410 Configurator
ld2410.albert.nz/
HLK-LD2410 Datasheet and software
drive.google.c...
MyLD2410 Library:
github.com/iav...
Support my work on Patreon so I can continue producing free content and tutorials!
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My recording gear:
Canon M50 Mark ii - s.click.aliexp...
Samsung A71 - s.click.aliexp...
SJ400 Action camera - s.click.aliexp...
USB Condenser Microphone - s.click.aliexp...
Tripod - s.click.aliexp...
Phone tripod mount - s.click.aliexp...
Human presence detection with LD2410 sensor and ESP32 - Basic Guide
#ld2410 #mmWave #presence #esp32 #tastethecode
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For anybody reading the comments; you don’t necessarily need the ESP unless you are doing some automation like timing, logging etc. the sensor can be wired directly to a relay to turn on/off a light or power to a device when presence is detected. The motion sensor (HLK-LD2410C) can be fine tuned via Bluetooth. Read the manufacturer description on how to adjust settings such as distance, field of view, delay.
Good Video. I use these all over my house with Home Assistant and ESPHome. They work very well for presence detecting. The ESPHome code i use set's up zones (3 in fact) so it can be triggered based on the zone (distance) you are from the sensor. I use them to turn on and keep lights on in a room. They work well with the BH1750 light/lux sensor to know when to turn a light on or not based on motion and how much light is currently in the room.
Thanks for sharing!
I've used the BLE version, but you cleared up the use of the 2410. Thanks. I prefer the 3.3v version without BLE.
Thanks! I haven't looked at the BLE options but I might give it a go just to see how it works.
Hey, I’m just curious as to why you prefer the 3V version without BLE?
@@marinehm I see the 5v units actuall have a linear voltage regulator to drop it to 3.3. I use the 5v version for units that are constantly powered, but for battery units, the wasted power is detrimental, even a couple of milliamps shortens battery life a lot.
Hi there, would you recommend these to avoid false positive alarms? I'm using ZY-M100 Tuya linked to home assistant but having huge amount of false positive alarm. To avoid that I have linked 2 sensors but still now and then I'm having false positive. Main use of this is to detected human when comes to terrace. That is how I stumble upon your video of using HC-SR04 and ESP8266 so idea is to implement that as well, which I did, but now with median filter I'm getting false negative :D And if I turn off filter there are to many spike values from HC-SR04. To sum it all, what would you advise to use in such application? Considering that you have implemented all possible solutions, presence sensor, ultrasonic and laser(VL53L0x) what would you advise to use and in what combination? Many thanks...
Can you elaborate a bit more on what you actually need to detect? Just movement or sitting presence as well? Right now, it sounds like a simple PIR might do the trick for you.
is there any mmwave sensor can use without esp series for triggering relay like HC-SR501 PIR motion sensor
I haven't personally used it but you can use the OUT pin directly to trigger a relay without any microcontroller in between. Make sure that the relay is rated for the voltage or to be safe, you can use a transistor.
Could we use this outdoors say for instance to turn porch or patio lights on? I guess the real question is how well does it perform outdoors and can we enclose it in something for protection from the environment?
It would not be good to use outdoors as it's motion based, so anything moving such as a tree limb blowing in the wind, trash of any type, dogs, cats, birds, incest's, will trigger it.
There is nothing preventing the sensor to be used outdoors. As long as there is an appropriate enclosure to shield it from the rain it should be OK.
Is it possible to see distance in mm? Or isn't it accurate enough. I'm trying to measure distance to moving strip.
Think this can be a solution since the environment is bad. With smoke and mist.
Just considering that a human is quite large, measuring to a mm precision is not really that viable. Laser distance measuring might be a better option but if the environment is bad you might not be able to use that. Can it be enough that you know the movement in the ballpark? Why it needs to be that precise?
I found this useful, but one thing this didn't clear is that will the mmWave detect any object other than humans that might be sensitive. I want to use this in a store room automation prototype, and there may be many things in the store eoom, so i want to know about the false reading probability
What else might be moving there except from humans? Even if there are a lot of stuff inside, things don't move on their own.
@@TasteTheCode this sensor can detect stationary target, so i don't want any of the stored products to be falsely detected as a stationary human
When I tested it, it wasn't detecting my chair if I was not sitting in it. I'm not sure about the technical details of how it does it but it should be ok.
@@TasteTheCode thank you, atleast it doesn't detect regular furniture as targets, and if it does detect other products, I'll manage it
These are nice sensors. The only drawbacks are that they use a lot of current when compared to PIR sensors and cost quite a bit more. If you are not running on batteries, they can be a nice option. Does anyone know if they are FCC type accepted for use in a potential product?
I don't know for sure about FCC but I've seen them in products already. The Aqara fp2 is an example.
Excellent vid, have liked & subbed !
Thanks!
Anyone know if you can use 2 or more in the same room, or do they upset each other.
Not sure, I haven't tried to have more than one in the same room at once.
Thank You
👍👍👍
If you get the BLE version you dont need a esp, it just popup in Home Assistant.
Thanks for pointing that out. I think I do have the BLE version but I do not have BLE enabled in Home Assistant. Maybe I'll try it out. 👍
Thank you for sharing .
You are welcome!
I can't wait till all you guys get your hands on neuralink ❤❤❤❤❤❤❤
what is wrong with you?
Huh?!?!?
I wouldn't put this in your home.. extremely toxic
Toxic? How is it toxic? Can you please elaborate?
@@TasteTheCode Consider this... a microwave oven operates at 2.4ghz... and wifi is around the same freq. With blood cancer being the most common cancer in children, and microwave ovens are cooking food by effecting water molecules in our food... what do you think wifi is doing to our blood? Now... bump that freq up 90% and you have a wide range of additional problems, and if it gets up to the 60 range, than you have oxygen issues to worry about... so i'd suggest even if you go through airport don't have them radiate your cells with this non-sense mmw device which runs at 30ghz+ you can always request a pat-down which is radiation free and doesn't dysregulate your cells, blood and promote inflammation, oxidative stress, and more... there is much more to this, but to avoid censorship i better refrain from saying too much in a comment because yt often deletes my comments w/ various topics
@@TasteTheCode So its really not a "smart home" if you keep adding more and more devices on wifi... you are going to end up causing focus issues, and a wide range of additional problems requiring your body to detox more often, and add additional burden to your immune system, which isn't even being taught correctly in med school. so most doc's are clueless on how to actually regulate the body and its setup that way
@@TasteTheCode Radiation from wireless technology affects the blood, the heart, and the autonomic nervous system
“Exposure to electrosmog generated by electric, electronic, and wireless technology is accelerating to the point that a portion of the population is experiencing adverse reactions when they are exposed. The symptoms of electrohypersensitivity (EHS), best described as rapid aging syndrome, experienced by adults and children resemble symptoms experienced by radar operators in the 1940s to the 1960s and are well described in the literature. An increasingly common response includes clumping (rouleau formation) of the red blood cells, heart palpitations, pain or pressure in the chest accompanied by anxiety, and an upregulation of the sympathetic nervous system coincident with a downregulation of the parasympathetic nervous system typical of the "fight-or-flight" response. Provocation studies presented in this article demonstrate that the response to electrosmog is physiologic and not psychosomatic. Those who experience prolonged and severe EHS may develop psychological problems as a consequence of their inability to work, their limited ability to travel in our highly technological environment, and the social stigma that their symptoms are imagined rather than real.”
pubmed.ncbi.nlm.nih.gov/24192494/
@@TasteTheCode “Cancer was first associated with exposure to electromagnetic fields (EMF) in 1979 when Wertheimer and Leeper reported that children dying from cancer resided more often in homes believed to be exposed to higher EMF than did healthy control children”...
pubmed.ncbi.nlm.nih.gov/1626106/