439 24GHz Radar Presence Detector that Works (LD2410)
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День томуDetecting humans is one of the biggest challenges in Home Automation. Most of us use PIR sensors for that purpose. Unfortunately, they do not detect presence without movement and switch off. Who wants that the TV switches off when you quietly watch a video?
Recently, new radar sensors appeared that solve this problem. But they have a slow reaction when you enter the room. Some UKpostsrs suggest combining such a sensor with a PIR. An expensive workaround.
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Links:
LD2410 Sensor: s.click.aliexpress.com/e/_DnF...
LD2410 including base: s.click.aliexpress.com/e/_Dn2...
Aqara FP1 Sensor: s.click.aliexpress.com/e/_DFW...
Tuya sensor??: s.click.aliexpress.com/e/_DcH...
LD2410 Info: www.iclegend.com/en/product/l...
Sensor info: h.hlktech.com/Mobile/download...
FCCio Database: fccid.io/2AWE7
Home Assistant Radar project: community.home-assistant.io/t...
Tuya Sensor blog post: blakadder.com/cheapest-tuya-h...
Other 24GHz Sensor:
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@hi-link4092 Рік тому
Hi Andreas, really appreciate your time and dedication to do such video for our sensor module LD2410, you are so great. you know and explain this module better than our engineers.☺☺
@AndreasSpiess Рік тому
Thank you! Now we would be interested what your engineers do to solve the issues I mentioned in the video ;-)
@hi-link4092 Рік тому
@@AndreasSpiess yes, we are testing here and update you the results.
@enricobernardini557 Рік тому
@@AndreasSpiess I got an ld2410B (bluetooth) thanks to your video. Regards the issues you point to at ukposts.info/have/v-deo/nHGrfI6nh2l3xH0.html minutes, it seems to me that the first event to switch from green state (output 0) must be a motion event. After that, the sensor needs a motion OR motionless trigger (before timeout expires) to keep the output pin HIGH. In my opinion it is a good behaviour: if someone entered in the room he/she can stay in the room :-) , the motionless triggers can be ignored otherwise (so you can set the thresold lower). What do you think about? Thank for your nerdcool channel :-D!
@dan-nutu Рік тому
One quick question for the engineers: can 2 or more LD2410 sensors correctly operate in adjacent rooms or do they interfere with each other? Thanks
@hi-link4092 Рік тому
@@dan-nutu Hi Dan, the space between two modules is more than 1.5M and the antenna surface of the module cannot be placed directly,thanks.
@atomikrobot300099 Рік тому
Perfect! I’ve been meaning to replace my study’s, workshop’s and kitchen’s PIR sensors with mmWave presence detection. You can’t beat the value of these modules!
@AndreasSpiess Рік тому
Good idea!
@peter.stimpel Рік тому
I really like your no ads policy, support well deserved! Now I found my answer, maybe. We are in the middle of planning our new business building. During one of the meetings, the technical expert came up with the question how to switch on/off lights in restrooms. In our old building, you have to move from time to time while doing the "business". This results in the need to wave to the sensor when it takes longer, or you are sitting in the dark. The expert said there are sensors which do not need that waving action anymore, and I was asking myself how this works. Seems, your video delivers a possible answer.
@AndreasSpiess Рік тому
This 24GHz technology probably became "ripe" over the last months. Last year, I saw some 60$ sensors in this frequency range and found it too expensive for general use. With the new price point it became interesting.
@blakadders Рік тому
There's a glut of mmWave devices from Tuya and Aqara made their own so now a few manufacturers appeared online with their products like HLK, MicRadar and LeapMMW. There's a selection of specialised ones for sleep, heartbeat or fall detection as well as 60GHz models. Personally I'm waiting for the people counter from MicRadar
@keen2461 Рік тому
Hey Andreas....just wanted to say I want to be like you when I grow up (though you're only a few years older than myself😀). I really appreciate the time and dedication you put into these useful videos. May God keep you healthy and with such great spirit way beyond when we have quantum microcontrollers!! Cheers from Colombia.
@AndreasSpiess Рік тому
Thank you for your nice words! Indeed, live can be rewarding also for old people like me. So there is hope ;-)
@PimentinhaPT Рік тому
Nicely done and you found a way to be on the sofa as part of the testing process, thats a win win scenario, keep up the good work
@AndreasSpiess Рік тому
Definitively a win-win situation ;-)
@PhG1961 Рік тому
Awesome product and a great video. Recently I bought a few radar sensors, but this model looks much more promising. I need to tinker with this !!!
@AndreasSpiess Рік тому
And doing some tests is not too expensive...
@michaellakeman4208 2 місяці тому
Andreas - I admire your patience having read through the questions.
@AndreasSpiess 2 місяці тому
This is part of my fun!
@xDR1TeK Рік тому
Wow Andreas you're on a whole other plane of existence. Brilliant work.
@AndreasSpiess Рік тому
Thank you!
@Davvg Рік тому
Great video! Also, I really appreciate that you reply to so many comments!
@AndreasSpiess Рік тому
Thank you! Yes, I try to answer all comments.
@wrbrower Рік тому
Andreas, thank you for this. Ordered six with your link. After experimenting, I may ruggedize these for car backup sensors being the bumper cover.
@AndreasSpiess Рік тому
Look at the datasheet where they show you which plastic cover is good and which one is not
@byronwatkins2565 Рік тому
If they used a triangle wave instead of a sawtooth, then the distance information changes sign (and order) for the second half of the period and the Doppler part is the same. Thus, each could be measured accurately and independently. There will still be an aliasing problem as distance increases enough that more than a half period propagation delay accrues. This can be mitigated by using multiple triangle waves (for high accuracy) or by increasing the triangle period until the returning signal of distant objects is seldom detectable.
@AndreasSpiess Рік тому
You are right. Sophisticated wave forms can be used to extract more information. I assume the frequency can be chosen from the outside of the radar chip and the ADC signal can be read, too. So a lot is possible. We will see what people do with this technology...
@a930913 Рік тому
I have made an integration for Home Assistant for the LD2410B; the Bluetooth version. It should automatically pick up the sensor via Bluetooth and offer to adopt it. It will be released in version 2023.2. Thanks for bringing this sensor to my attention Andreas!
@AndreasSpiess Рік тому
So I have to try it out. I also have the BLE version...
@dartfrogdk Рік тому
i got the ld2410B i can pick it up using my phone but in homeassistant it say no unconfigured devices
@efimovv Рік тому
Very promising sensors! I ordered 2 more expensive ones but not yet test them. But they already have kind of working ESPHome integration with settings.
@AndreasSpiess Рік тому
Cool. Now you have to make them work ;-)
@sahilkarni1550 Рік тому
so wats the difference between those expensive once and this have you texted it yet ?
@JohnBaxendale Рік тому
As ever, you seem to create a video on something I've been looking at, it's as if you know! Awesome!
@AndreasSpiess Рік тому
Glad I could help!
@anonymoususer6448 Рік тому
Solution for "PIR and sun" problem? Thank you Andreas for doing all the leg work again. We can stand on your shoulders one more time. Great research and great verifiable, information. From a true engineer ! Thank you Last winter I had installed PIR sensors around the house. They worked fine till this summer where the sun, or the movement of hot air, gave me a ton of false alerts. As you said: if it has not been tested.... I was going to experiment with Ultrasonic sensors, but now that I have seen your video, I may try the LD2410 first
@AndreasSpiess Рік тому
So you are a happy person living in a warm country ;-)
@anonymoususer6448 Рік тому
@@AndreasSpiess not that far, just Belgium ;-)
@remy44444 Рік тому
Amazing and very informative. When I encountered this problem I went with motion sensor + shock sensor ( on floor ) whenever someone existing the room and no motion determine after a minute the room is empty. Same goes with doors monitor for the shower. Btw, Alexa dot3 has microwave sensor, but it's unreliable and takes 30 minutes to turn off.
@AndreasSpiess Рік тому
Interesting! So far nobody mentioned shock sensors for this purpose!
@LoopOnTech Рік тому
Hi Andreas! This is a great video and very useful while designing a custom board for the LD2410. Thank you
@AndreasSpiess Рік тому
Good luck with your board!
@Designments 8 місяців тому
Thanks for the video. I'm using an LD2410 with ESPHOME, but using the UART and letting the firmware do the heavy lifting. Works really well for controlling lights in kitchen/workshop type environments.
@AndreasSpiess 8 місяців тому
Thank you for sharing your experience!
@EdFrench_uk Рік тому
Lovely addition to my armoury of random sensor for projects!
@AndreasSpiess Рік тому
Good luck with the project!
@ImnotChuck. Рік тому
Very impressive research. Thanks.
@AndreasSpiess Рік тому
You are welcome!
@luisgarrido2166 Рік тому
Always great videos! Thank you very much.
@AndreasSpiess Рік тому
You are welcome!
@aboverobotics Рік тому
Thank you very much for such new and useful information.
@AndreasSpiess Рік тому
You are welcome!
@DenisWilsonSouzaRosa Рік тому
Your videos are pretty good btw! keep going!
@AndreasSpiess Рік тому
Thank you!
@rickharold7884 Рік тому
V cool. And lots of work digging around for info. Thx!!
@AndreasSpiess Рік тому
You bet!
@zyghom Рік тому
Super nice video Andreas (as usual). However, as you mentioned: the biggest advantage of PIR over these radar based sensor is the current consumption: I am down to 60uA for both: ESP32 sleeping and PIR SR-602. So they can work on battery. This one (and the others on 2.4GHz) are operating at around 1000x higher current so battery for 2 days ;-(
@AndreasSpiess Рік тому
You are right. I thought I mentioned this fact.
@tarakivu8861 Рік тому
Unlike a PIR-Sensor which has to be enabled all the time to notice differences, this one probably works if you only turn it on sporadically to check if something changed.
@cchance Рік тому
@@tarakivu8861 Was going to ask if this isn't the case can't a loop be created? PIR Sensor for initial detection, triggers the 24g to start watching, it kicks on every 60 seconds or so checks for motion or motionless to be active still, if it isn't it disables it's restart interval until the next PIR interval triggers to tell it to start monitoring again?
@AndreasScheucher Рік тому
But using them with higher energy consumption still makes sense when the controlled device also has high energy consumption (eg. kW range). Then for sure every minute saved is worth the consumption of the sensor...
@felix3317 Рік тому
@@cchance I guess the question is: how long is the boot time for the 24G?
@scienceoftheuniverse9155 Рік тому
Thank you so much indeed. You really save my day Sir.
@AndreasSpiess Рік тому
You are welcome!
@wjn777 Рік тому
Great video, thanks for sharing. Very interesting sensor, I assume it will work well through a plastic enclosure
@AndreasSpiess Рік тому
It should. But read the data sheet. They have a chapter about choosing the right material.
@wjn777 Рік тому
@@AndreasSpiess Thank you for the advice Andreas
@nerdwerx2292 Рік тому
Oh... No WAY!?Wow, I see my favorite sensor has been upgraded!I will definitely have to pick up a couple of these new sensors ! But as @Assassinlexx mentions in one of the comments "RWLS-0516 will detect through drywall" .That is an important feature for stealth deployment or burglary situations.I hope this functionality is available in the 24Ghz detectors. 🤔
@AndreasSpiess Рік тому
You have to try. 24GHz is quite high and they have a chapter about housing material in the spec sheet. So material of the wall seems to be important.
@userou-ig1ze Рік тому
Thanks for this, and your research summary. I hope there's a follow up video of the version in your living room (aka 'official' or 'release' version)
@AndreasSpiess Рік тому
We will see...
@lohikarhu734 Рік тому
It looks to me that it could be interesting/useful to find out where, and when, the power is used, to perhaps architect a system that operates in a pulsed mode, depending on how quickly you need to sense activity or occupancy... Thanks for a good look at this, it seems that a bit of Geduld and prerserverance were needed!
@AndreasSpiess Рік тому
I am sure these radar chips are quite capable. Maybe we will get a module where the radar is not connected to a MCU but to a programmable MCU. Then we could do experiments with changing the frequency etc.
@the-matrix-has-you Рік тому
These are the Problems Andreas yes. Good touch on a subject👍 our challange to find or modify low consumption current cheap sensor is still the case.The new Panasonic sensors are really good with 1uA and 2uA versions but it is still so expensive for a avarage maker like us. So I have gone into the modification direction. I have Managed to make HC-SR-501 to work with 3.3volts by removing the Zener Diode and LDO and Bridging Vin and Vout of LDO pins.I have Managed to lower its current consumption this way now HC-SR-501 consumes around 38 or 39uA at idle (when movement is not detected) but if it detects movement it can even go up to 300 uA not very good for battery Powered operation in my book. Maybe those new found Radar sensors are the new saviour maybe... I hope so. Thanks Andreas Spiess for your awesome videos! Great content as always!
@AndreasSpiess Рік тому
Your solution is good. Aqara Zigbee PIR sensors are also a good choice if you can live with only detecting movement. They consume nearly nothing. Amazing tech. And cheaper than the Panasonic sensor alone ;-)
@the-matrix-has-you Рік тому
@@AndreasSpiess maybe I should buy one and one zigbee gateway reverse engineer and understand how they decreased consumption that much. 👍Thanks for the tips Andreas your content is Superb as always. I have also lived in Switzerland for 2 year in Grabünden Region near St.Moritz in boarding School. Love your Country so much The Nature and the Swiss people in southern parts are always greet and say Grüß Dich and Smile😀 no matter if you are stranger or not. I see Switzerland as my second country. You Swiss folks are really kind and have a good understanding of how to be a good Human Being. Swiss are always helpfull and kind. Thanks Andreas. Every country should take lessons of principles what you guys have done.🇨🇭🇨🇭🇨🇭See you again until next video of The Guy with a Swiss Accent🖐️
@AndreasSpiess Рік тому
@@the-matrix-has-you Thank you for your kind words. Yes, we love peace. But I am sure you find nice people also in your country! I learned that they are everywhere. I have plenty of nice people like you from all over the world commenting on my videos...
@the-matrix-has-you Рік тому
@@AndreasSpiess Thanks Andreas, I have a new Record to announce! I used my new pir sensors AM312's and modified them.For those who are using AM312 PIR Here is how to lower consumption even more and make it work properly with 3.3v first remove LDO HT30 respectively and bridge Vin and Vout then add 1uF capacitor to Vout and GND pins and remove the only one smd resistor as it is labeled R1 and bridge resistor pins with little solder. Then AM312 will work much much more stable plus it will consume around 6 or 7uA😀 now with AM312 pir sensor and my custom wemos d1 mini wake up shield and wemos d1 mini with LDO removal consumes around 163uA with my new calculations over 470 days of running capable sensor with a single charge! Success👍
@tatali5276 Рік тому
Andreas, it is cool work!
@AndreasSpiess Рік тому
Thank you!
@assassinlexx1993 Рік тому
If you use Rcwl- 0516 chip. They can" see" through dry wall , wood. They are prefect for burglar sensors. As they are hidden inside walls etc.
@oscarpeters1351 Рік тому
Those work great, but do not have motionless detection in them
@bjornroesbeke Рік тому
I don't know if the LD2410 module is any better but the RCWL-0516 modules that i have will also detect movement in other directions than directly towards the sensor.
@AndreasSpiess Рік тому
All radars should "see" through thin walls. However, I do not know how good 24GHz works. They provide information of which plastic you should use for the enclosure. So there is an influence...
@jmr Рік тому
Very interesting! Presence detection is hard indeed.
@AndreasSpiess Рік тому
I hope that these chips bring us closer to the resolution...
@raysieber9233 Рік тому
Far too subscribers few for the value of your content, great video
@AndreasSpiess Рік тому
:-) Thank you!
@yekutielbenheshel354 Рік тому
Interesting video. Thanks Andreas.
@AndreasSpiess Рік тому
My pleasure!
@yekutielbenheshel354 Рік тому
@@AndreasSpiess By the way, AutoHotkey on Windows or AutoKey on Linux enable users to create shortcuts. For example, when I want to type "My pleasure" I type "..mp"; whereas, for "Thanks for letting me know. I appreciate that." I type ".tflmk". I prepend shortcuts with two or three letters with ".." I prepend shortcuts with four letters or more with "."
@hobbykip Рік тому
This is awesome! I have used some RCWL-0516 in the house but I find them to have quite a lot of false triggers or no triggers. Hopefully this will decrease false positives without the need for a ugly PIR sensor. The nice thing about these things is that you can put them in a small space i.e. aluminium LED strip channels 🙂I've ordered the USB kit to tinker with it.
@AndreasSpiess Рік тому
Tinkering is a good plan to find out how they behave in your situation...
@DoktorJeep Рік тому
What makes you sure those triggers are false?
@hobbykip Рік тому
@@DoktorJeep For my application they are false triggers. The sensitivity of those sensors are hard to adjust and may vary depending on many different parameters not really understood by me. I guess objects and object location already can influence the sensitivity.
@NickReynolds Рік тому
Great I've been looking for something like this for ages. I'm also going to try putting them on a rover I'm building to detect nearby people as a safety aid.
@AndreasSpiess Рік тому
Good idea!
@michaegi4717 Рік тому
In general FMCW-Radars can do crazy things, if you combine them with intelligent software. If you assume that objects don't change their velocity extremely fast, you can use a set of frequency modulations with different ramps. With this trick you can detect distance and velocity of several objects. For a long time this was the technology for radar sensors for advanced driver assistance systems in cars and trucks.
@AndreasSpiess Рік тому
Good to know that this technology has even more potential! Maybe in the next chip revision ;-)
@pizzablender Рік тому
I think a sine wave FM can be used, correct?
@michaegi4717 Рік тому
@@pizzablender Usually they use liniear ramps with changing gradients. The frequency shift is a combination of time of flight and doppler-effect. For each echo you you just get a combined information if distance and velocity... combining different gradients enable to calculate the velocity and distance seperately. A saw tooth-pattern is possible, but I think a series of positive gradients is more common. A true sine wave FM would make it close to impossible to do the calculations. And I guess that the constantly changing echos will make it hard to receive a significant power in a specific frequency.
@veronicalogotheti5416 Рік тому
Thank you Nice study
@AndreasSpiess Рік тому
You are welcome!
@griaxi4124 Рік тому
Still working as of today, ty!
@AndreasSpiess Рік тому
Very good!
@taoufikbadri6959 Рік тому
Love this job !thanks
@AndreasSpiess Рік тому
My pleasure!
@adifoto6362 Рік тому
Thanks for the video, that is not a bad price worth tinkering with.
@AndreasSpiess Рік тому
Agreed!
@peterkuemmerli7695 Рік тому
Dear Mr. Spiess many thanks for this informative video about the LD2410 Sensor. With some shielding it is quite easy to make it sensitive in small angle direction and not sensitive from the back-side. It does not work with 12V DC, I, was baking one sensor already, take 5V DC... About soldering it is easy on top side plus = at the capacitor / signal = outside pin. solder minus on the back side by the testing contactors. I use this great sensor for my time - capturing project, it works perfect on a distance of 3m.. like a laser beam... If you wanna test it his way, i can send you some 3D Printing models... Best regards, Peter
@AndreasSpiess Рік тому
I would be interested in the 3D models because I got now LD2410B (bluetooth) sensors. Maybe stuff for another video. Yo can contact me on Facebook Messenger or Twitter
@peterkuemmerli7695 Рік тому
@@AndreasSpiess Ok, was sending you a message trough FB, the STL files and photos are coming soon. i am looking forward, to integrate this smart , robust and cheap sensor into bluetooth networks, can be a good additional sensor for target recognition as a feature in my time-measuring application . Many thanks and best regards, Peter
@temyraverdana6421 Рік тому
Very interesting video. Thanks a lot
@AndreasSpiess Рік тому
You are welcome!
@charlesurrea1451 Рік тому
there was a company called Radionics alarm. They had an early microwave field disruption sensor. Much like the old Viper car alarm. Sadly it went through walls and had to be custom tuned for every sensor.
@AndreasSpiess Рік тому
Radar usually works through walls. But the higher the frequency, the lower this feature. And with today's software adjustments it is probably easier and cheaper than back in the day.
@adrian30497 Рік тому
Super video. Pls stay on the topic if something new happend.
@AndreasSpiess Рік тому
Sure 👍
@galmagen6212 Рік тому
thank you for taking the time for exploring the modules and explaining them as you do, we are actually learning from you, thank you! is it safe for constant use for years in distance of 0.3m between human and sensor?
@AndreasSpiess Рік тому
I think so. They do not emit a lot of power.
@galmagen6212 Рік тому
@@AndreasSpiess do you know what is the standard for safety using radar ?
@AndreasSpiess Рік тому
@@galmagen6212 No, I also do not care too much.
@klassichd10 Рік тому
Many Thanks! Very interesting sensor! Maybe it could be used as a rain sensor, too? Currently, my motion sensors mostly are PIR sensors, because of low power, battery operation and zigbee compatibility. I have one or more of them in every room. All of my lights are controlled by motion sensors and ioBroker. Very convenient.
@AndreasSpiess Рік тому
1. They seem to be quite sensitive to motion. So maybe it is worth a try with rain. 2. I love these Zigbee PIR sensors, too. They run forever on a coin cell...
@klassichd10 Рік тому
@@AndreasSpiess @ 2: yes indeed, they are not very power hungry. Most of them, I could hide close to a piece of furniture and could also hide 2 AA batteries in the furniture. So, the batteries run even longer and I do not have to touch and readjust the sensors when changing batteries.
@helmutzollner5496 Рік тому
Very interesting. thank you
@AndreasSpiess Рік тому
Glad you enjoyed it!
@eskimojo97 Рік тому
Dear Mr. Spiess, thank you so much for making this video and explaining about LD2410 so clearly. After having struggled with an RCWL-0516 with so many false alerts, I ordered the LD2410. After hooking everything up (Wemos D1 Mini, and the LD2410 module, that's it), nothing seems to be getting detected. Is it mandatory that I update the firmware before it is used in any way? Out-of-the-box implementation doesn't seem to work. Would appreciate any insights, at your convenience.
@AndreasSpiess Рік тому
I did not update anything. Maybe you check your wiring. Changing RX/TX sometimes help if it is mixed. Otherwise you have to see what is coming from the sensor in its TX pin.
@wojciechwaga1587 Рік тому
Dziękujemy.
@AndreasSpiess Рік тому
Dziękuję za Twoje wsparcie!
@andybgrant33 Рік тому
Love the channel. More mmWave to come ;)
@AndreasSpiess Рік тому
We will see...
@graemehughes9910 Рік тому
Thank you so much! !!
@AndreasSpiess Рік тому
You're welcome!
@sdrouet Рік тому
Very nice video. Pity you don't talk enough about power consumption. I think it's topic that deserve a place in all your videos :) thanks anyway. Continuez comme ca :)
@AndreasSpiess Рік тому
I included the diagram of the power consumption and said, it has to be connected to mains. From then on, I am no more interested in how much it consumes. It is anyway not a lot compared to all other devices.
@Barc0d3 Рік тому
@@AndreasSpiess What do you mean it HAS to be connected to mains? Cant it not run from a battery/powerbank/laptop usb? I am probably confused by mains, to me that implies I need a AC-DC adapter to use this
@AndreasSpiess Рік тому
@@Barc0d3 Of course, it runs on batteries. Just big ones because of its high consumption.
@tobimai4843 Рік тому
Loxone has Motion + Noise sensors, that's also a smart concept IMO
@AndreasSpiess Рік тому
A noise sensor for sure would create a good signal for the TV. At least the films my wife watches ;-)
@PerfectInterview Рік тому
Here’s a tip, if you mount a PIR sensor on a servo, you can move the sensor in a scan pattern and get a presence detection even if the person is not moving.
@AndreasSpiess Рік тому
Interesting idea!
@dan-nutu Рік тому
Interesting indeed. Wouldn't it generate (more) false detections though? If there are (larger) objects with different temperatures (e.g. radiators) those would appear as "moving" to the sensor
@AndreasSpiess Рік тому
@@dan-nutu This movement is probably slow.
@geri777 Рік тому
"Radar Presence Detector" - und ich dachte, jetzt gibt's ein nützliches Radarwarner Projekt 😁 🏎
@AndreasSpiess Рік тому
Wäre auch eine Möglichkeit gewesen. Leider illegal wo ich lebe :-(
@levran75 Рік тому
Many thanks for the video, very informative. Tell me, did you have problems with overheating when powered by 5 volts? This module with esp8266 works fine for me now, but the heating around 40-50 degrees Celsius is a little disturbing.
@AndreasSpiess Рік тому
I probably did not check the temperature
@eskimojo97 Рік тому
@levran75 I hooked it up to the 5v pin of a Wemos D1 Mini and the LD2410 felt a little warm within the first minute of hooking it up. Thought that was unusual. I've not had it on for a long time and I wonder how the module will hold up when deployed for a longer time.
@dfgdfg_ Рік тому
I don't know why, the image of you laying down on the sofa at 0:14 was really funny 🤣
@AndreasSpiess Рік тому
:-)
@manu808 Рік тому
Excellent! 👌
@AndreasSpiess Рік тому
Thank you!
@marcofe82 Рік тому
Hi Andreas, thank you so much for the video and I wanna ask you a question, what do you mean for "slow moving objects"? I mean, how much slow? thank you!
@AndreasSpiess Рік тому
Slow like a human, I think. But I cannot give you a number. The doppler effect adds to the distance and the sensor becomes less accurate.
@fir3w4lk3r Рік тому
Rally nice video!!! What model is the multi arm helper you use?
@AndreasSpiess Рік тому
I do no more remember :-( It is already old.
@mmoci81 Рік тому
Hopefully you will revisit this subject. Very interesting. Enjoing your channel. Whis you all the best.
@AndreasSpiess Рік тому
We will see...
@michaelwurzer6791 7 місяців тому
Interesting, is there still a PIN or place in the ciruit where the pure doppler IF can be taken from?
@AndreasSpiess 7 місяців тому
I do not think so.
@MikeNugget Рік тому
Awesome review! Fun fact: you can track moving objects in the living room just with your 2.4Ghz router 😮
@AndreasSpiess Рік тому
That saves you money if you know how to do it...
@marcs.8384 Рік тому
Hello Andreas. Thank you for this very clear presentation. I just received the LD2410B Kit and tried to install it. It perfectly detects presence and movements. The problem is that it does only communicate its data through USB cables. It does NOT PAIR to any Bluetooth device (laptop, phone, Raspberry Pi 4B with BT). For example, I can integrate it into Home Assistant/ESPHome, but use it ONLY when it is connected to my Raspberry Pi by cable. Any help would be more than welcome. Thanks!
@AndreasSpiess Рік тому
The "B" version is only laying on my table. I never tried it :-(
@bteixeira2013 7 місяців тому
Thanks for your lessons! I bought a few of them, I managed to get the headers unsoldered as well as to 2 more components... But how safe are this 24GHz sensors to be used on an office were we spend 10h/day? And on children's room? 73 CT2HUU
@tanerriko3635 Рік тому
very informative😍 video
@AndreasSpiess Рік тому
Glad you think so!
@alessandroalfonzetti3892 6 місяців тому
Very interesting! But can it "see" multiple targets? Or is there a value that can make you understand that there are multiple targets?
@thetinkerist Рік тому
Super thanks!
@AndreasSpiess Рік тому
You are welcome!
@NikArcher Рік тому
Hey Andreas, great video! I found it after I already ordered the sensor and replaced a 12GHz radar sensor with it. The old one was quite big and also caused my ESP32 to stop working whenever the radar was powered on. But I have a different question, maybe you can give me a hint: I don't completely understand the spec sheets. There are diagrams showing the working angle and detection range for 2 placements. But is there a difference if the radar PCB is oriented horizontally or vertically? background: if I want to detect movements down/upwards of a stairway, I would tilt the radar a little bit like this: / but does it matter if it is oriented like this - or this | ? I hope you understand what I try to ask :D
@AndreasSpiess Рік тому
I think you have to try it in your situation because many factors influence its behavior. With the app you see its signal and you can decide. I think, the orientation is less important than the thresholds you choose.
@NikArcher Рік тому
@@AndreasSpiess ah, alright! I'll try and test it. Thanks :)
@serggorod1423 Рік тому
Good job 👍 ,
@AndreasSpiess Рік тому
Thank you!
@wherami Рік тому
interesting. thank you
@AndreasSpiess Рік тому
You are welcome!
@albanprada7183 Рік тому
Thanks a lot! Excellent video. My question: Is it possible to use that sensor for people counting? - Bus passenger counting.
@AndreasSpiess Рік тому
Maybe. If you can separate them enough.
@amgmg2521 Рік тому
Thank you for the detailed review. Can it detect through walls as rcwl-0516? and what is the detection angle?
@AndreasSpiess Рік тому
I did not try, but it should work through thin walls.
@luisrey8986 Рік тому
Excelente!👍
@AndreasSpiess Рік тому
Thank you!
@dansilful Рік тому
@Andreas Servus! Can you say anything about interference if two modules were next to each other? As they cover only 60 degree I was think about extending the width with two modules. But in some cases there would be an overlap
@AndreasSpiess Рік тому
You have to try yourself. I did not test this scenario.
@effendyabdullah Рік тому
Should try the LD2410B, you can configure the sensitivity using the Bluetooth App. I'm using LD2410B in my 2 bedrooms connected to ESP32. It could also be used standalone without an MCU so a great candidate for battery operated Bluetooth radar presence sensor.
@AndreasSpiess Рік тому
Do you have more information?
@effendyabdullah Рік тому
@@AndreasSpiess check my channel there is a short video of the app. I think i left a purchase link there. Edit: the purchase link is on the comment of this "trashy" video ;-) -> ukposts.infowgP3yod4ALI If you need a translated screenshot of the app, tell me.
@Barc0d3 Рік тому
Wait, whats the diff between the LD2410 and the LD2410B? Only the bluetooth capability?
@effendyabdullah Рік тому
@@Barc0d3 I don't see any diff using it the past few months. LD2410B has Bluetooth which is much more convenient when setting up the sensitivity.
@TheDaniel366Cobra Рік тому
Good to see FMCW sensors are becoming more available to hobbyists. Is there currently any reasonably priced small radar altimeter for drones?
@tissuepaper9962 Рік тому
Pick one: -Cheap -Good -Readily available as a complete product for end consumers
@AndreasSpiess Рік тому
I assume the allowed power on ISM bands (and the price tag of amplifiers) does not allow ranges of more than 10 meters for reasonably sized objects like humans...
@Anthony48901 Рік тому
Best room presence detection so far is frigate and double-take, disadvantages are that you need RTSP cameras in every room and the whole setup ain't cheap
@AndreasSpiess Рік тому
True
@elementaldraco Рік тому
Intrigued to know how this performs in environments where there maybe high levels of atmospheric disturbance. Such as clean air movement that can't be blocked off. My workshop is in an old barn.
@AndreasSpiess Рік тому
I do not know. But radio waves usually are not disturbed too much by dry air.
@efimovv Рік тому
Some 60GHz models states they can detect heartbeat to the level of alarm if it out of range. If that true then they will work correctly in noisy envirionment.
@punkyproductions5153 Рік тому
I like your steampunk attitude 🎩😎
@AndreasSpiess Рік тому
Thanks!
@nkronert Рік тому
I wonder if it would be possible to reach the same goal by using PIR in combination with light barrier at the entrance(s) and some clever algorithm to weed out reference counting errors.
@gominosensei2008 Рік тому
Two laser beams at the door could count people going in or out based on the order of triggering them....
@AndreasSpiess Рік тому
You always can count. As you write, you probably lose control quite fast if two persons are too close...
@gominosensei2008 Рік тому
@@AndreasSpiess I suppose some clever use of interrupts and a counter should take care of that particular problem. But the reason I never built it for myself is that in order to install it to work properly and not count separate feet or arms going in and out it would be advised to bounce it around the doorframe with small mirrors a couple of times and the installation would be quite tricky to pull off and not at all universal or easy. It would also require some careful drilling to install it in the door frame, unless you are prepared to have it stick out in quite an unsightly manner. Either way, it would be probably a fun weekend project but I can't immagine this ever becoming close to a versatile enough product.
@nkronert Рік тому
@@AndreasSpiess or of someone walks in swinging the arm forward while passing the barrier. But the use case "person has been detected by PIR but hasn't left yet through the barrier" may be reasonably easy to implement. But yes, you need some way to correct the count when it is off by some reason.
@WebmediArt Рік тому
Mehr zu diesem Thema bitte :)
@AndreasSpiess Рік тому
Was wäre denn interessant?
@jrioublanc Рік тому
Thanks a lot, I was looking for an alternative to PIR sensors, you did it!
@AndreasSpiess Рік тому
You are welcome!
@wolfganglienbacher Рік тому
FYI, I bought the tuya model you described, it had the same main pcb and radio module, but a different radar board on it. Seems to be a MICRADAR R24DVD1 in my case ...
@AndreasSpiess Рік тому
what is your experience with it?
@wolfganglienbacher Рік тому
@@AndreasSpiess I find it overly sensitive. It also senses presence of a person in the room behind me and it has quite a long cooldown time. The bare LD2410 module on a D1 Mini works better for me, plus I can configure the detection parameters. But of course that lacks the nice looking (oversized) case.
@wolfganglienbacher Рік тому
Oh, and someone made an esphome component that lets you configure the 2410 via homeassistant and log all values at the same time. Kind of beats the tuya solution by a safe margin.
@AndreasSpiess Рік тому
@@wolfganglienbacher Thank you!
@MathieuFRAPPIER Рік тому
Thanks!
@AndreasSpiess Рік тому
Thank you for your support!
@Monochram Рік тому
Wow thanks for the information! There are also pretty cheap 9 segment FLIIR/Infrared sensors. Did anyone tried these? Can u do a video about them?
@AndreasSpiess Рік тому
You are welcome!
@VRNC-kn5tf Рік тому
Hello I would love to see a video about radar sensors that would be strong enough to be put into a array and potentially detect drones in the sky or birds and such.
@AndreasSpiess Рік тому
These radars are extremely expensive. And need a license :-(
@LongNguyen-ej8qe Рік тому
Hello. thanks for your video, i don't know if this sensor has any effect on health? Is it suitable for frequent exposure? Thanks for all the feedback.
@AndreasSpiess Рік тому
Its signal is very weak. So no problem.
@jafinch78 Рік тому
I wonder which 24GHz modules are being used for contactless hearth beat sensing? Seems these can be capable of detecting at least that electrophysiological signal, if not others... though I haven't read through the spec's yet.
@AndreasSpiess Рік тому
As I mentioned: The higher the frequency, the higher the sensitivity. With some filtering and close to the chest it is maybe possible to monitor breathing.
@jafinch78 Рік тому
@@AndreasSpiess Wondering if there are cheaper sourced modules available like the seeedstudio 24GHz & 60GHz modules? Interesting reading into and seeing even some online performing with 2.4GHz modules. Thanks for sharing and detailing! As always, great content and awesome to see your channel growing sir!
@DominikPalo Рік тому
Thank you, I'll definitely play with that module :) Btw, there is probably a mistake in the links list - the "LD2410 including base" item points to the same URL/listing as the "LD2410 Sensor"
@AndreasSpiess Рік тому
Thank you for the info. The link should be ok by now.
@stephanberger7455 Рік тому
@@AndreasSpiess Both links are dead now…
@doejohn8674 Рік тому
@@stephanberger7455 They are working right now, at least from Switzerland
@AndreasSpiess Рік тому
@@stephanberger7455 Do you use an ad-blocker?
@stephanberger7455 Рік тому
@@AndreasSpiess No ad blocker, the link to the FP1 sensor is working...
@JorgeFernandezFuente Рік тому
If this thing is so sensitive, would it not give false positives due to flys moving? Really nice video. As always..
@AndreasSpiess Рік тому
Flies are probably too small if they are in a distance.
@ted_van_loon 9 місяців тому
1,25cm wavelength(1.25cm to inches for people in usa). that is around 1cm of precision with even a single one of those(which around 1cm but then converted to American units for people in USA). however the interesting thing is when you use it as a phased array by using multiple of them(similar to the 5g antennas in a smartphone) then precision of smaller than 1mm can be reached easily due to the ability to focus the radiowaves on small sections and move those focus sections. however in my case what I was mostly interested in now since modern smartphones already can make such 3d scans at around 0.1mm resolution easily(yes it is there, the software for it is there as well, this can be used to detect problems in the body and diseases due to being capable of making such detailed 3d scans but also inside of you, but somehow you are not allowed to use it since the 5g phased arrays in your phone are typically propetairy black boxes put into other propetairy black boxes that prevent you from using it, but you have no way of knowing if other people are using it on your phone, so support foss, especially such technologies which can also be very dangerous and privacy intrusive(such advanced 3d scans even through your clothing and body, and still having decent range is a serious privacy and security risk) it should be gnu+foss), to instead just make simple 3d scans the easy way by using 3 sensors to get width height and depth, this also takes way less compute power. only using 3 sensors or 3 measure points to make 3d scans with around 1,25 to 5cm precision is still very useful for example or motion tracking, fun, looking through things(like x-ray glasses but then actually working), etc
@michaellakeman4208 2 місяці тому
Metric is so much easier. I can't understand why any country hangs onto imperial. Mind you, we still buy that vital fluid in pints here in the UK🍺
@mrtrippsuk 10 місяців тому
Hi Andrea’s Do you have the link for the test/config software? I just can’t find it. Great video as always.. Bye 😂
@AndreasSpiess 10 місяців тому
I did not publish it because it was so simple :-(
@Big_Computer 8 місяців тому
would having (in theory) 2 of those radar sensor operating in the same room interfere with each other ?
@AndreasSpiess 8 місяців тому
I did not test. But I assume they work on the same frequency.
@iDoWayTooMuchAcid Рік тому
Gives me ideas! wonder if we could DIY a radar system for the rear of our bikes like the Garmen VARIA radar system to detect cars approaching from behind which is great for lower visibility like rain and fog and snow and urban cycling where not always most obvious what cars behind you are doing.
@tissuepaper9962 Рік тому
Better to just ride against traffic.
@iDoWayTooMuchAcid Рік тому
@@tissuepaper9962 illegal and somewhat inefficient here (and yes cops sometimes do enforce this over actually solving real problems here, they like easy targets). I have a Varia, it’s amazing and I wish this tech was more available for more people as I don’t even need to look back to know if I can dart across a road or not, it beeps at me and shows me on screen how many cars are behind me and how far each are on my cycling computer. I just love to see it implemented further and better to more people as it’s makes biking much more efficient and safer.
@AndreasSpiess Рік тому
This radar system is astonishing, particularly its range. If it would not be so expensive, I would have done a teardown ;-) I have no clue how they achieve such a range.
@tissuepaper9962 Рік тому
@@iDoWayTooMuchAcid as more of a "trust but verify" kind of person, methinks I will stick to the old eyeballs and a mirror if I can't ride against traffic. I'm glad that that product works so well for you though, I think I'm just a little too distrusting of that kind of technological assistance. I find that I easily slip into complacency when relying on such a system, e.g. I absolutely hate blind spot detectors and backup cameras in cars.
@iDoWayTooMuchAcid Рік тому
@@tissuepaper9962 I treat it more like blind spot monitoring on my car, if it alerts I don’t even need to check if I can merge the chances are strong I can’t as it doesn’t false that much. I just maintain my place until it gives me the okay then I check and make my move. Same with this.. if given an alert I know to tuck over to shoulder and maintain. don’t even need to double check mirrors or look back, and that’s well before the car is close enough to be annoyed at people cycling. And I don’t need to remember to look in mirrors sometimes you get so in the rhythm you can forgot for periods of time even Ebiking I been caught looking at scenery a bit too much. it let’s me know with alert tones and lights. I’ll admit it’s most effective on longer stretches vs urban but even so. this is also I think a great accessibility item too for people who may not be as able to turn and look behind them. Mirrors + a little radar like this adds so much security for those people that maybe forced to ride all year around because maybe let’s say “legal reasons” . You are right that people shouldn’t rely on it as it could become a single point of failure however, counter point is that I think it makes enough of a positive difference for people that it’s also worth it. Not like Tesla’s FSD/autopilot or Volvo’s pilot assist both of which I used and both of which I think are so inconsistent sometimes doing amazing other times actively trying to crash that they more dangerous than helpful I think.
@gijsqwerasdf Рік тому
You are the best
@AndreasSpiess Рік тому
:-)
@t1d100 Рік тому
Wonderful.
@AndreasSpiess Рік тому
:-)
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