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Coolest motion detection sensor ever!
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- Опубліковано 2 кві 2017
- This sensor, the RCWL-0516, is a human body motion detection sensor. It can distinguish between object and person movement. It is so easy to program it, I did it in real time for the video.
Project page:
rohling-de.blogspot.com/2017/...
Buy this sensor on Amazon
amzn.to/2sUQxws
Some car alarms use this kind of sensor and they can be adjusted to give a warning if someone comes to within a certain distance of the vehicle or to fully trigger the alarm if they get too close. I had this kind of sensor in one of my cars and it was the only sensor I needed to keep the car protected.
It is not only a human motion body detector as you concluded with your cushion experiment. It is a simple radar unit and looking for large changes. At the frequency it uses, these large changes require things that reflect and absorb the signal to move. Try a piece of foil. It will detect it.
What do you mean foil? Aluminum?
@@jeremyred6343 yes
Good to know .Thanks
This is really cool, thanks for sharing!
I bought 10 of these for £5, they're great little boards. I don't even need 10, just I wasn't going to pay £2.50 for one :-$
Got em , they work nice, only low range up to 7 m in my case I needed 15 m but will find use of these as well. Nice video deserve big like.
May i know what kind of source code did you used ?
Did you find something similar for longer ranges? If so, what did you find? Thank you.
I previously watched another video explaining that radar detects metal moving and water and we are made up of a lot of water and that is how it sees us. I dont pretend to know anything but was on a youtube binge and found interest in these devices
I wondered the same thing. Would that mean if outside it would suffer interference from rain??
WOW Awesome tutorial soooo simple. TY for this excellent video
Thanks for your time to record this video. Very interesting. Best regards.
Nice job on this video. It was a good exploration.
Thank you for the demonstration. I will go buy one.
0:43 FYI... you don't need to cut the scored lines on the PCB with the Xacto knife.
The scored snap lines are designed to cleanly snap apart.
+lasersbee you're right. It was pretty easy to snap them apart. But I wanted to ne sure before I break them.
HI,
FYI you don't need an Arduino and code to run it. Just provide 4 to 24 volts and 3Mamps (0.003)max current. It runs all on it's own.
I used both sensor in my final year project!!
1st I used PIR sensor but it has limited range (7 meter)
We want more than 10 meter range distance so we used then rcwl-0516, that gives a very nice rage which require so I like that sensor.
I started using one today it keep on all the time.. can u tell me whats wrong
In my case it gives only 3 meter range in outdoor open area ..what could be reason can you plz suggest ?
What is range of the detection distance in open space? Pls tell if u checked it?
it is always fun to explore new things with you..
How about the range? And can we adjust the timer, like maybe 30 seconds the light is on or so?
So I'm a beginner in this kind of stuff but I have a project I'm working on and wanted to know if I could get your advice on it
If its like a microwave, you should be able to detect ceramics as well as water based flesh. Please do a ceramic plate test, that would show the frequency is actually the same as our common microwave.
Lol do it!
Can this sensor be used for Car Parking occupancy detection system which will be installed below the ground.
I bought a handful of these from Amazon about a month ago. Cost about a buck each. Hooked one up and couldn't get it to react to motion unless my hand was about 2 cm in front of the sensor. I haven't tried any of the other ones but I guess it's a crap shoot for quality when you order Chinese surplus electronics. Maybe if I'm lucky one out of the 6 will work. Instead of driving an Arduino I just hooked an LED up to the output along with a 680 ohm resistor. As I said the LED would light but only when triggered from a short distance. You can select the sensitivity with a resistor but the default with the pads open is supposed to be 7m.
Que resistencia se puede reducir o aumentar (sensor 0516 ) para disminuir la distancia de disparo, probé con papel plata y chapa en medio y no se nota.
I now have several of these and they all work except the first one I bought... have you tried making them directional, using a metal reflector? I am trying to build a hornet detector that does nor respond to smaller insects, such as bees, and this seems like a possible candidate if thresholds can be programmed.
Haven't tried to making them directional. But, since it was shielded by the metal shaker, I think it should be possible.
Great demonstration. Also like your mouse mat. C= forever! :)
Thanks! And I love my mouse mat!
does wifi signals affect on sensor detection? any noise or false detection?
I should look into Schematics but I definetely think LDO is in the Circuit so it may work with 3.3Volts if LDO VIN and VOUT is bypassed😉
Does it detect any other objects? Like something made out of metal?
Never cut away from yourself. Never side to side. Always toward you, from top to bottom.
nenioc187+For the LED, did you use a 15ohm or higher? Thanks...
It works great with ESP8266 if you run this module on 5v instead of 3.3v.
Does it detect relative movment? I mean if you (the human) keep still and you move the sensor, would it detect the still human? I guess to move it you should make a copper shield behind the sensor so it would not detect the person moving the sensor.
And do you say it does not detect object movement of any kind? do you thing it is becouse of the water content of the human body? would it detect a bottle of water for example?
I like your mousepad!
How could I change sensitivity or direction if I wanted to?
There is a connector marked as "R-GN". When you bridge it with a resistor you can lower the range. If you don't want a direction to be monitored, you could shield it. A simple metal plate will do. Like the test I did with the cocktail shaker in the vid. It shields the sensor completly.
I want to detect object apart from human like small toy car , how can i do that with this sensor? Please help!
Could this be used on a camera trap system, to trigger a camera in the field? I capture pictures of panthers in south Florida for the state. Could it be triggered from 15 feet away, and capture motion the size of a domestic cat(bobcat) as well as panthers? If so, can I pay you to build a couple units for me? I would like it to run on a battery for about a month, and trigger a camera with a 2.5mm plug.
Hi, does the sensor work with arduino 1?
Wow, very interesting. Thanks for sharing
Seems to be exactly what I need! I have been having issues with trespassers on property I own that is semi remote and therefore everything is off grid and power is a issue. I've tried pir sensors but they are easy to get around by moving slow apparently as well as the fact they emit light and are easy to detect after dusk. Have you determined a range limit? And it would help if you would make a list of required parts as I am not familiar with arduino as of this post. Completely awesome video, best useable info yet and I'm purchasing the boards asap. 👍👍👍
- PIRs don't emit light. That's what the "P" means = "Passive".
- This sensor's range is about 4m or so.
- As for the whole "protecting your property" project I can't really offer ideas, since I don't know the layout (fences, buildings etc), what available (if any) power sources you have there, your budget etc.
(I'm curious though. Why would people come in your property & walk slooowly, trying to get around sensors? What are you hiding there anyway? :p)
Nice Video.
Do you think it will detect precipitation? It might be useful for automatic windshield wipers.
Nice idea! But I doubt it will work.
1. When you move the sensor it triggers itself. Even the vibration of the motor can trigger the sensor.
2. I'll guess the rain drops are too small to detect for the sensor (see ua-cam.com/video/0HYRD35F570/v-deo.html where a cat has to be in close proximity to trigger the sensor).
3. Usually a vehicle is controlled by a human, that would trigger the sensor.
Thank you.
I imagine it will do whatever it is programed to do, that is the beauty of the open source system, we can all benefit from and enhance that which we are all becoming more proficient at understanding. I can actually say that I don't know much of anything about this, but I like it. I have learned how to turn 4 LED's on in series and adjust the rate at which they blink but that's it, and that's all. And I did attempt to use sonar but that's it...
+Jason DeLozier whether or not it can detect water droplets is a hardware issue, not software
No. Its a doppler radar.
Really cool!! Do you know if it works from inside a window i.e glass?
Haven't test it yet.
Can you also base the detection on code? Instead of adding resistors? And then calculate the distance to the object it sees?
You only get a digital sensor value out of this sensor. Which only refelcts if an object is detected or not. You could maby solve this, by using several of this sensor with different resistor values. But I'm not sure, if the interfere with each other. Could be a nice project.
Thanks for this video!
Question; will this work through a 3 mm Medium-Density Fibreboard (MDF) with a 3mm acrylic one way mirror on top?
This is kinda specific. I think, you'll just have to try it.
And it worked?
It should because it's RADAR and it will penetrate non-conductive substances. It also will not respond to such materials. The mirror could be problematic because it might be conductive and block the signal.
great lil board, shame the range is not as good, but fingers crossed maybe improve on that,
would have to be careful where you place it if it is that good at through materials, may get false reads when not in the room you are monitoring :)
Hi, I want to ask, can I use this for pipe which is when we want to wash hand, the pipe move infront? I need your or someone who read to give opinion.
I would recommend using a distance sensor. IR, Laser or ultrasonic. You can check if the distance drops to a certain value and let the water flow.
Hi, I use this sensor in my Paranormal research and have built what I named RoePod and RoePod mini.
I have had great success using this sensor in my custom built devices out on location where at least 3 known suicides have taken place.
Allowing adequate distance between myself and my RoePods and one device being placed on a tripod under the exact spot where a suicide was found hanging.
2 of my custom built RoePods did activate, the other I had placed in a doorway that was the 1st to activate. As I walked over to the device which had already reset itself and as I bent down to retrieve it the other RoePod placed in the spot where the suicide was found hanging began to sound and flashing its LED at the same time.
I cannot explain why these 2 devices activated as I made absolutely sure that enough distance was between myself and the devices.
These sensors have a 360 coverage, can detect through walls and are unaffected by wind, animals, bugs, mosquitoes and require a human or something else to manipulate the devices to get them to activate.
I am also constructing a Paranormal music box using this sensor, currently I am waiting for the musical movements to show up to continue on with this project.
The movements will be powered by a small 3v motor using 2 alloy pulleys and a toothed belt.
Its basically a trigger device that the spirits can manipulate to activate.
Incidentally I am building many variations of the musical box using different sensors, I will try out vehicle backup distance sensors, this will be a first for me.
Respect from Taiwan, stay safe and enjoy your Christmas.
How about the range? Can I control them?
I am planing to use this as Human Detector for security purposes.
@@madscientist1595 It has a sensitivity range of up to 7 meters, 360° and can detect through walls as I proved in a demo in my kitchen and dining room. When triggered its trigger output pin will switch from (LOW) 0V to high (3.3V) for ~ 2 to 3 seconds before returning to its idle LOW state.
I wish the trigger run tome was linger.
Component side should face detection area for maximum sensitivity
Sounds like a cool project. Did you made a video?
@@nenioc187 I did demo video,
ua-cam.com/video/8SeANAUbOW4/v-deo.html
@@nenioc187 There is also the RCWL 0515 version
is this sensor has a value that tell us..where the movement come from(the angle out of 360)
No. It has only "movment detected" / "no movement detected".
Can I use this to turn on a Terminator Prop eyes and trigger the neck movement? Thanks a lot.
It is a motion detection sensor. You can trigger anything you like with it. But it is not for tracking
I cant find any details or material to further customize it for example to detect other materials instead of Human Body and another thing I cant find what is the rate of readings possible? can it do 1000+ fps detection?
The only customizing you can do, is lowering the range and adding a photo resistor. Come on, it's a cheap a** sensor.
@@nenioc187 doesn't mean we shouldn't hack the **** out of it :)
Hello does this sensor detects an object like Napkin thrown with the speed of gravity? in case no what do you recommend? Thank you. :)
No. As you can see in the video, it even doesn't detect a cushion I threw close to it.
these circuits have high false alarm probability ... better to use in combination with passive infrared sensor and more ...
Nice video thanks. Is there any way to alter sensitivity?
Indeed, there is. On the pcb you'll find two solder points, marked as R-GN. Corresponding to the datasheet (that is Chinese all the way), you can solder a resistor in between. That should decrease the sensitivity. But I haven't tested it - yet ;-)
Thank you for the blindingly fast reply! :o) I am just ordering a couple at the moment.
nice video on this cheap radar sensor, and you are funny!
wow, am just trying to figure out how to use this for a master project
i want to use this sensor for my project...everything is fine, but i want to know if microwaves are safe for long time exposure?
The Sensor uses about 30 milliwatts (mW).
The radiation output is limited to that value (It's probably lower). That is far less than
your smartphone emits.
Hi I'm using same sensor with arduino with same code but I'm getting very low range that's in 2 3 cm and motion only in one direction can be detected . What will be the problem. Please help me.
ich bedanke mich , alles gute !!! bis bald !!! usw usw usw
morgen werde ich das versuchen, danke voraus !!!
Is it possible to detect the state of both walking parallel and departure instead of approaching the door?
@witenitenz ı need to detect the difference between walking parallel and approaching to door. It's ok picking up while passing the door, i want to detect this state. Do you think it's possible?
but if its rainig outside it gets trigered like crazy and I know because I used a relay instrad of led to power a 108db buzzer alarm and it started raining on the night it trigered it
Interesting. I'll add this test to my bucket list. Thanks for the hint!
It doesn't get triggered when raining outside, I just tested it.
is it safe use, some say microwaves can pose severe health problems @@anilroy10
Hi. What is the name of the other pcb that you program? What is the name of compiler please?
Arduino nano, arduino IDE.
Does anyone have any experience using one of these to detect birds and critters. I am looking to use something to trigger a video camera to get some wildlife footage.
Tested it with a cat. Indoors. Maybe this one will help.
ua-cam.com/video/0HYRD35F570/v-deo.html
will this sensor work when there are 2 objects moving from opposite directions???
It's not able to count the objects, if it's that what you mean.
Hi,
Do you know if the detection range can be adjustable? I have read in sales literature
"2.R-GN Detection distance adjustment;connect with resistor and detection distance will become shorter;if not connect,detection distance is 7m;if connect with 1M ohm resistor,detection distance is 5m"
but I am not experienced enough to understand if this is feasible? Have you tested this?
Thanks
There are two solder-holes where you can add a resistor to decrease the sensor range. Haven't test it yet, but should work.
nenioc187 Thanks for the reply Could a variable resistor be used here so the range could be adjusted to sit different environments?
Sure. Why not.
Thanks for the video, i wonder if this will work with a esp8266. The infrared ones are affected by the esp8266 i have mine trigger when there was no motion. Some people mention that they are affected by the WiFi radiation or something like that.
I wonder if these sensors will be affected in the same.
I ordered some that will come from china for the ridiculous price of AU$0.72.
I also heard of this problem with the ESP and the PIR sensor. And since this sensor works with radar waves, it might be a problem I've not thinked about yet. I want to implement this sensor in one of my bigger ESP projects. So I will test it prior and upload a video.
Thanks for the tip!
Apparently the pir can be fixed by soldeingr a 220nF ceramic capacitor across pin12 and
pin13 of the chip (BISS0001) so that the high-frequency interference
coming from the ESP8266 don't influence the gain stage anymore.
I didn't try it so don't know if works. i am waiting for my radar waves one to come.
I tried it with a ESP8266 on a NodeMCU board. Had no problems with false positive results. Video is in my queue and will be uploaded soon ;-)
That's grate, i am exited just waiting to get mine from china and to start tinkering with them.
Thanks for your video was very inspiring.
looking forward to see your video with the NondeMcu
@adifoto @nenioc187
I've been struggling for WEEKS with a miniature DIY motion detector device built with RCWL-0516 + ESP8266 + mini 5V P/S.
It sometimes works flawlessly for hours then starts giving false triggers repetitively ... I even tried to get the radar sensor out of the casing in case it would work better when distant from the ESP, but to no avail :-(
I think this sensor is definitely prone to interferences and not reliable enough to be used in a motion detector device in the long run.
Any feedback here will be welcome !
Would it work sensing animal movement?
Doesn't work very good in detecting animals. See the follow up video for this. ua-cam.com/video/0HYRD35F570/v-deo.html
So , it detects only humans movement? Can it detect a car if it-s moving?
Is it possible to use it as a presence detector? To notice if there is a person in the room?
I could detect movement within the whole room. I think it could be used as a presence detector, but with some limitations. It is easily blocked by walls. And while I was on my couch, watching TV, it didn't trigger my laziness ;-)
It used doppler effect on radio waves, so not if the person is stationary, but if they move then yes they will sense
This sensor could be connected to a solid state relay, to activate LED light 60watts, without the need for Arduino, since in my country is not cheap the Arduino, thank you very much for your attention
That's correct. You can hook up nearly every sensor, that puts a digital on or off signal to relais or even a MosFet to control it. But you got more options with a microcontroller behint it.
Nice project. Cool demo of it working. I like your controller. Makes simple tests easy.
Thanks!
The link is broken in the description
Thanks mate! I corrected it.
They are ok but I found they interfere with esp8266 or even 433mhz radio a and block the output
Heard this a lot. But I have 2 projects using an esp8266 with this sensor without any problems.
Just got a few. But do not have an Arduino. Hope, it will also works without an Arduino. Did you try that? A simple blinking LED will do. But thanks for the info.
Yes, it should work without an Arduino. The OUT-pin is pulled up high (should be 5V). But I don't know how much current is provided. Maybe you'll need a transistor or a MOS-FET to provide extra current to the LED.
Thanks will try it and rapport.
Hello there, again!
I want to make a lightbox that turns on and off with gestures and I will use this radar with an Arduino Uno.
I have a some questions:
1) how can I limit the area where the radar is reading? I want to leave only a spot and try to make it work reading gestures.
So far, I can't find the way to find that "blindness", its or total in both ways, or read everything or I need to block it inside a stainless steel bottle so it doesn't read anything... I already tried a microwave horn, and nope, didn't work. Unless I did it wrong somehow.. which materials or ideas could you recommend me to solve this?
2) Voltage. So, I am using 12V LEDs, how can I adapt the voltage so the RCWL don't get fried? lol So it get the normal 3V the radar needs.
I was watching your other video, where you talk about the APDS-9960. The problem with that one, is that I was looking something "cleaner" with the PIR I will need to create a hole, which I would not want... but since I am having a bunch of troubles with this, I am starting to consider it.. suggestions???
Thank you so much for your content! :D
You can decrease the RCWL's sensitivity by soldering a resistor to R-GN. With a 1 MOhm you can decrease the range from 7M to 5M. You can try it with a potentiometer to fulfill your needs. If you want to make a lamp that you can turn on/off by gesture, you'll definitely need a gesture or a proximity sensor.
Spoiler: Next video is about a lamp, that is controlled via Smartphone and can be turned on/off by gestures (used the APDS9960) ;-)
Thank you for your answer!
In this case I am interested in no more than 30cm of reading area. What I want, is to "interact" with my light box. The original idea was doing it by gestures. Where waving the hand once (as if you say hello) will turn on and twice (as if you say bye) will turn off.
If this is not possible, maybe just make it read what it detects, the problem here is that the code I used don't let me (and I don't know how to change it) change the time it takes between the read from one move to the other. Sometimes it takes 2secs sometimes almost a min, and sometimes reads fake movements!! ):
For this test, I used State Change Detection (Edge Detection), which works similar as by gestures.
The problem of using the APDS9960 is that I will be forced to make a visor for my PIR, to detect the gesture. And it may not work since it will be interrupted by the light inside the box. Unless I put some sort of small tube (like a straw size maybe?) the problem there is that my light box is made of milky white acrylic sheets, which will create a shadow on the way.. unless I sacrifice some distance....
The optimal distance for that one to work was around 7cm up to 25cm (saw another guy trying it in another video)
So, for the RCWL there is no way I can make like a small box made of some metal, with a small open area (the visor) to read only a specific angle/area?
Thank you!!!
p.s. sorry for the huuuuuuuuuuge text, but I am so lost at this point and I have tried several stuff and I need to finish my prototype asap! D:
Each of your approaches might work. Boxing the RCWL sensor, or making a small hole for the APDS sensor. If you'll using the gesture sensor: I'll recommend following: Use one wave to turn it on and one wave to turn it off again. You avoid false reading you'll probably get, if you rely on the two wave method.
Can you tell me the range of these sensor....
The only datasheet I've found was in Chinese. It talks about a range about 3 Meters (9 feet). That corresponds to the tests I made. The sensor detected myself in a distance of about 3-4 Meters. My cat has to be in close proximity for the sensor to react (about 30cm/1foot).
good
Does this sensor has front, back or direction point like the PIR for example ?
It has a wider detection range than a PIR sensor. I would say it has more of a 360° range.
nenioc187 Thanks, which side is the front one ?
I tried the both side and can't tell which is the right one :(
I'm not sure there is a front or back, since it works both ways.
The Arduino is not needed. VIN is 4 - 28 VDC (not 4 - 24VDC). Simple test circuit: LED anode to dropping resistor then to OUT, LED cathode to GND. Power + to VIN, power -- to ground. OUT goes to high (3.3VDC) when notion is detected. On power up, LED comes on for 2 secs, then off for several seconds while the board boots up, then ready to detect. The component side is the detect side aligned in the general direction of desired detection.
That is correct. As you can do with the PIR sensor, or many other sensors. But you have much more possibilities if you are using it with an Arduino.
it's a great explanation i understood very well thank you so much ❤️
How to incorporate a small piezo like speaker so we have a visual and audio motion alert. What piezo buzzer like speaker is suirable and voltages?
Same as with the LED. Use e.g a 5V piezo for an Arduino. Connect Minus to Ground and Plus to an Arduino pin. If motion is detected, pull the pin HIGH and the piezo makes an annoying beep.
@@nenioc187 thanks, how about if I do not wish to use an Arduino just use the RCWL 0516 on it's own.
Never tried it before, but it also should do the trick. Just connect the digital output of the sensor to the positive of the piezo and the minus to the ground line.
@@nenioc187 I have built in excess of 10 devices using this particular board. I use my devices in my Paranormal research, I have called my devices RoePods. I incorporated a coloured 8mm LED with a piezo speaker/sounder, so I have visual and audible alerts when it activates.
Sorry I forgot to mention my sensor boards which is the heart of my RoePods (100 x 50 x 40mm) and my RoePod minis sit inside a 65 x 40 x 30 black project cases. Recently I created some smaller RoePods using an off white project box, this case being only 75 x 45 x 18mm in size. I used a soft high temperature silicone wire inside as its easier to manage when working in confined project box spaces. I am delighted in the way they look, sound and function. While out recently on location to test out my devices 2 of my RoePods activated despite being adequate distance between myself and the units. It's worth mentioning that one of the RoePods I had placed under the exact spot where someone had hanged themselves. I also used an SB7 Ghostbox and a Sony PX440 voice recorder, both which gave me an indication that something was manipulating the Ghostbox and different vocals were recorded on the voice recorder that shouldn't have been there. Incidentally I do not use Arduino or any script. I have played around with ways to power 1st RoePods used 2 x 18650 batteries. The 2 RoePod minis (65 x 45 x 30) I used 9v batteries. On the more compact 75 x 45 x 18 cases I used 2 x CR2032 button batteries.
how can i decrease length because mine is going through my wall..
and how can i block it totally.. on the sides for instances?
There are two solder points marked R-GN. With a resistor here, you can decrease the range. Corresponding to the datasheet a 1MOhm resistor would decrease the range from 7 meter to 5 meter.
The signal can be totally blocked by metal. Like in the video, where I put it in a metal container. So you could build a shield out of steel.
arg okay noted! could i decrease the range any further by adding more resistance :)?
That should work. Also consider this: each obstacle reduces the range and sensitivity. So you could reduce the range by using a thicker housing for the sensor.
Nice
This shows why I am frustrated at so much Arduino usage in small projects. You could have just connected the output directly to the LED, but no, we gotta use an Arduino to make it look like we know what we are doing. (the "I are an engineer" attitude) I have seen so many projects that would have only needed perhaps a couple of transistors but instead the creator decided to use an Arduino because "it's so cool".
Of course you can use it directly. Or make a project with it, without using a micro controller. I encourage you to do that!
But I need to use it with a micro controller, not because it is cool, but because I'll use it with more complex projects than only triggering a LED.
is there a health issue for long exposure to the microwaves?
With a look in the datasheet the sensor uses about 30mW (0.03 Watts). You can say that the radiation from your smartphone does more harm to you, than this sensor. ;-)
That is a matter of much conjecture.
Does it works through 10 mm glass wall ?
Never tried it.
Dear Sir, Would like to use it without Arduino, what about the delay settings (as in PIR sensor) for which it remain HIGH?"
With a capacitor on the C-TM pad you should be able to extend the HIGH-time. But I'm not sure what kind of cap you need.
@@nenioc187 Thank you, Good Idea!
has anybody tested it with NODE MCU or a D1 Mini? Is it working properly?
Yes, it works with ESP-controllers. There is a follow-up video to this:
ua-cam.com/video/0HYRD35F570/v-deo.html
woow... so coolll
If the tree is moving does the LED turn on?
It's kinda hard to test s.th. like this...
Is that a Dollar a piece in the USA?
It's in Euros. 1 Euro is about 1.12 $
did you test the range of the sensor?
It should have a range of 7 meter. Haven't tested it though.
@@nenioc187 okay thanks :)
I want something that doesn't detect movement behind wall. Is this the case?
You should try a PIR sensor. That detects only in the line of sight.
@@nenioc187 I'm using a pir sensor now but it have too many false positives.
Is there any way to extend the range ?
There is a way to shorten the range, but I'll guess, if you want to cover more ground, you have to use multiply items.
@@nenioc187 can you give me a solution for this
Even I want to detect from long distance so is there any other component available?
but there is no POT on it so then how do you adjust the range?
There are two solder points marked R-GN. With a resistor here, you can
decrease the range. Corresponding to the datasheet a 1MOhm resistor
would decrease the range from 7 meter to 5 meter.
@@nenioc187 what is 1 MOHm ?
how does it look on a meter?
is it megohm or milliohm
if i test it what will it show on the meter?
a cheap non autoranging meter, there is onlu k ohm settings ,
i want tot see if i can harvest a SMD resistor out of something
It's Mega-Ohm. Or 1000 k-Ohm on your meter.
@@nenioc187 ok thats what i thought
so i put my meter to 2000k ohm setting (not auto ranging) and it should say 1000 with no decimal points
i don't have a fancy fluke i only have a cheap centec
Great video - what education do you have?
Thanks! My mother taught me how to eat with fork and knife without embarrassing myself ;-)
But I'm also a computer scientist.
Luxury! I had to teach myself how to eat with a rock and twigs!
It is a radar detectir
I think it might work on the same principle, emits high frequency signals and detects the frequency shift VARIATIONS in feedback.
can this sensor detect the direction of motion ?
No. It's more of an omnidirectional sensor.
@@nenioc187 can measure range or distance of motion ?
Only motion.
Would be great to hook it up to a Sonoff with tasmota installed.
Sonoff projects are coming soon
"how cool is that?"
Been watching the Russian hacker ?
Found that mat on eBay. Usually it comes in green. But if you search long enough, you'll get it in blue ;-)
Thank you, just found one, thank you.
Statt dem Arduino und dem Programmcode hätten es auch zwei Widerstande und ein Transistor getan.
Mir war dieser Sensor nicht empfindlich genug.
This is a Radar sensor!
does it work through a wall?
Only thin walls. And it reduces the range a lot.
@@nenioc187 thanks for a fast reply. i'm planning to put this in a toilet as a indicator if someone is inside and i don't wait to detect people outside. my wall is around 15cm
There are two solder points marked R-GN. With a resistor here, you can
decrease the range. Corresponding to the datasheet a 1MOhm resistor
would decrease the range from 7 meter to 5 meter. I guess with an even higher resistor you could decrease the range even more.
@@Kostanj42 thats not a good idea, there are easier and better ways to achieve that, specially when you assumed that people in toilet will be constantly moving to keep the sensor triggered
@@knowurself4999 yeah i realized that, and also it was still detecting people outside. what other ways would you recommend?