You can get rid of the false triggers on the HC-SR501 PIR-module by soldering a 220nF ceramic capacitor across pin12 and pin13 on the BISS0001 chip (the two middle pins on the chip towards the end of the PCB)
The microwaves emitted from this module create the Doppler effect, though the microwaves can travel through objects it is looking for a difference between outbound and inbound microwaves over and over, if it detects a change in the outbound compared to the inbound it can then assume something has moved so really any high density object moving can trigger the RCWL-0516 vs PIR only detecting IR (they both have pro's and con's but really its all project specific) also if you move in very small increments I have found that you can fool the RCWL-0516 but in any real world non diamond heist situation it works great lol, thanks for the video!!! CATS RULE TOO!!!
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
Since this sensor is based on RADAR or radio waves, you should see if it detects motion on other RADAR reflective materials such as metals. If metals trigger it it could make a useful sensor to build home made metal detectors.
This was interesting , because i have a couple of these sensors on order, and a planned project of: an automated cat door! I intend to use a 125khz rfid sensor with a cat collar tag to ID our own cats to activate the door, but the microwave sensor might be used to detect another unauthorised cats presence!
Just trying to use one of these near a pond where water is flowing.... What do people think of it detecting water running in a pipe? i.e. the shape and position of the bulk of water does not change, but the water is being pumped through the pipe? My initial installation is giving constant triggers....
that's interesting. I was wondering if you could test if multiple sensors interfere with eachother. I saw in the previous video you had 2 of them. I would be intersted to know if you can also detect which one has been triggered.
Thought of this scenario myself. :-D I have to try to build a setup, where I can test this in a reliable way. Seems I have enough material to publish another two videos with this sensor :-D ;-)
looking forward to that, thank you :) My situation is that I want to detects night roaming cats in my garden... its not that big. I guess if you can detect each separately... you could do some trigonometry to calculate the position of the cat and do something with that... :D
Can the sensor detect distance to an object or just the presence of motion? i.e. could you program the arduino to display object distance? Ultrasonic sensors can do this I believe?
It can only detect motion. For distance, you'll need ultrasonic sensor, or laser distance sensor, or IR distance sensor. I've made vids about all those sensors ;-)
Yes, use active buzzer (such as for arduino) and transistor, since sensor current (middle pin) was not enough in my case to trigger the buzzer, I can barely hear it, but this current is enough to open a transistor
what is the problem with the PIR and the node MCU? i never heard of this before and have a PIR and a D1 mini i want to use to make a motion sensor for smartthings so does the D1 mini have the same interference issues with PIR sensors?
Very basic ;-). For the first video I wanted to test the range. The sensor was on one side of the room, I was on the other side and it still detects, when I was waving with my arms. That's about 3,5 meters. The cat, as you can see, had to be in close proximity to the sensor, for the sensor to react, as well as the bottle with water.
Watch the other video you did and this one .. certainly going to order a couple of these sensors for my automation projects.. more discrete then PIR as well.. and your assistant seems to have been over worked at 4:50
Tell me how it worked out! I've heard that some experience interference when using multiple of these sensors in close proximity to each other. Yeah, since my assistant is famous, she always bothers me and asks for a raise. ;-)
Thanks for your reply! It was just a short comment online, so I dont have more info. It could be, because it needs walls/obstacles to help reflect the signal, but I agree it should probably work. The other question is that 3.1Ghz is not an ISM band and I am wondering if this kind of low power products are exempt or it would be illegal to use them.
Put it on my bucket list: Test the rcwl in the wide open! The other thing is an interesting question. But I must agree. If it really emits radar on 3.2GHz base, it is not allowed to use it in most countries. I should investigate it further...
I asked to a seller and they said 5,8ghz but I am not sure they really know or just replied without knowing. Also same board is advertised here as being 24Ghz (that would be legal ISM band) s.aliexpress.com/R3AruqMZ We would need a spectrum analyzer that goes all the way to 24ghz to test it
There are several ways to detect objects. If you want to detect if an object goes through a certain area, why not using an ultrasonic sensor? If the measured distance changes, you'll know that something crossed your area.
But this sesnor has a lot more advantages over ultrasonic becasuse it does not detect any other thing apart from movement.. but when i tasted it , i found that it was only detecting human and animals movement not any other object movement.. that's why i wanted to know!
The video is called "RCWL-0516, ESP and cats". Also the description is in English. But I also added German translation. And German and English subtitles. If you're using YT in german, you'll get the german translation.
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
You can get rid of the false triggers on the HC-SR501 PIR-module by soldering a 220nF ceramic capacitor across pin12 and pin13 on the BISS0001 chip (the two middle pins on the chip towards the end of the PCB)
I should try that.
The microwaves emitted from this module create the Doppler effect, though the microwaves can travel through objects it is looking for a difference between outbound and inbound microwaves over and over, if it detects a change in the outbound compared to the inbound it can then assume something has moved so really any high density object moving can trigger the RCWL-0516 vs PIR only detecting IR (they both have pro's and con's but really its all project specific) also if you move in very small increments I have found that you can fool the RCWL-0516 but in any real world non diamond heist situation it works great lol, thanks for the video!!! CATS RULE TOO!!!
I wasn't able to get the radar sensor to work with the esp8266. It seems the wifi radio interferes with the radar and triggers it.
Nice video and good demonstration of the motion sensor. Good use of your assistant :)
Thanks! My assistant seemed to enjoy tho work :-D
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
how would i attach an esp32 cam instead of an led ? It would really help me out
Since this sensor is based on RADAR or radio waves, you should see if it detects motion on other RADAR reflective materials such as metals. If metals trigger it it could make a useful sensor to build home made metal detectors.
I'll guess, I have to make another video ;-)
This was interesting , because i have a couple of these sensors on order, and a planned project of: an automated cat door! I intend to use a 125khz rfid sensor with a cat collar tag to ID our own cats to activate the door, but the microwave sensor might be used to detect another unauthorised cats presence!
Just trying to use one of these near a pond where water is flowing.... What do people think of it detecting water running in a pipe? i.e. the shape and position of the bulk of water does not change, but the water is being pumped through the pipe? My initial installation is giving constant triggers....
So how did it work out? The Internet is full of post about false triggers with this sensor.
Can i reduce the range us 16 cm??? Or any radar sensors available with in the range of 16cm???
that's interesting. I was wondering if you could test if multiple sensors interfere with eachother. I saw in the previous video you had 2 of them.
I would be intersted to know if you can also detect which one has been triggered.
Thought of this scenario myself. :-D
I have to try to build a setup, where I can test this in a reliable way.
Seems I have enough material to publish another two videos with this sensor :-D ;-)
looking forward to that, thank you :) My situation is that I want to detects night roaming cats in my garden... its not that big. I guess if you can detect each separately... you could do some trigonometry to calculate the position of the cat and do something with that... :D
Rcwl doesn’t work for me unfortunately. I will order another one to try.
Can the sensor detect distance to an object or just the presence of motion? i.e. could you program the arduino to display object distance? Ultrasonic sensors can do this I believe?
It can only detect motion. For distance, you'll need ultrasonic sensor, or laser distance sensor, or IR distance sensor. I've made vids about all those sensors ;-)
Can this work with a small speaker that buzzes when motion is detected? some we can have led visual alert and audio using speaker. How to do?
Yes, use active buzzer (such as for arduino) and transistor, since sensor current (middle pin) was not enough in my case to trigger the buzzer, I can barely hear it, but this current is enough to open a transistor
what is the problem with the PIR and the node MCU?
i never heard of this before and have a PIR and a D1 mini i want to use to make a motion sensor for smartthings so does the D1 mini have the same interference issues with
PIR sensors?
Never heard of problems with the PIR sensor, either. But this radar sensor seems to trigger without a reason, when running for quite a long time.
@@nenioc187 that makes sense since it works with RF ,the
the PIR uses IR so i would expect interference with the microwave sensor
and not with a PIR
Nice one! Have you tried some basic range test?
Very basic ;-). For the first video I wanted to test the range. The sensor was on one side of the room, I was on the other side and it still detects, when I was waving with my arms. That's about 3,5 meters. The cat, as you can see, had to be in close proximity to the sensor, for the sensor to react, as well as the bottle with water.
Watch the other video you did and this one .. certainly going to order a couple of these sensors for my automation projects.. more discrete then PIR as well.. and your assistant seems to have been over worked at 4:50
Tell me how it worked out! I've heard that some experience interference when using multiple of these sensors in close proximity to each other.
Yeah, since my assistant is famous, she always bothers me and asks for a raise. ;-)
When I power the radar sensor and ESP with same battery then sensor keeps getting triggered
And PIR sensor works with nodemcu flawlessly
Thanks for the info. I'll try it if I can reproduce this behavior.
I have an engineer electrical cat too. So sweet your pet. Regars and thank for your excellents videos!
Nice! Very Interesting! Do you know if moving metal (for example aluminium) can trigger it? Thanks
Haven't tested it yet. But it's on my bucket list.
Ok, looking forward to see it! :)
I read somewhere that it does not work outdoors? Do you know if it works outdoors or not?
Haven't test it yet outside. But why shouldn't it work? Although it might trigger quite frequently outdoors.
Thanks for your reply! It was just a short comment online, so I dont have more info. It could be, because it needs walls/obstacles to help reflect the signal, but I agree it should probably work.
The other question is that 3.1Ghz is not an ISM band and I am wondering if this kind of low power products are exempt or it would be illegal to use them.
Put it on my bucket list: Test the rcwl in the wide open!
The other thing is an interesting question. But I must agree. If it really emits radar on 3.2GHz base, it is not allowed to use it in most countries. I should investigate it further...
I asked to a seller and they said 5,8ghz but I am not sure they really know or just replied without knowing. Also same board is advertised here as being 24Ghz (that would be legal ISM band)
s.aliexpress.com/R3AruqMZ
We would need a spectrum analyzer that goes all the way to 24ghz to test it
Nice assistant :)
your assistant is great :)
+João Ferreira Thanks!
The cat only proves we all have a bias current... his is treats!
It activates even if fan is running in the room...aur even if curtain moves in room
I tried to program the led to blink whenever the sensor is high I couldn't get it write I tried coding it again and again can you please help me out?
Just see tutorials for arduino to blink led, then use digitalRead from sensor pin in the middle and write it’s value to led.
Actually you don’t need an mcu for this sensor, you can hook an led to sensor output pin for testing
@@malcolmholmes115 thank you Georgy but that's bit late , now Ive learnt a lot .
@@dharanisharma6819 good luck with your learning, I learn electronics and MCU too as my hobby.
I want to detect object apart from human like small toy car , how can i do that with this sensor? Please help!
There are several ways to detect objects. If you want to detect if an object goes through a certain area, why not using an ultrasonic sensor? If the measured distance changes, you'll know that something crossed your area.
But this sesnor has a lot more advantages over ultrasonic becasuse it does not detect any other thing apart from movement.. but when i tasted it , i found that it was only detecting human and animals movement not any other object movement.. that's why i wanted to know!
@@arnabghoshfilms7949 try to paste aluminium foliage or band on your object to increase the wave refelction. second idee : put water inside :-)
Alguien que tenga un código para este proyecto, saludos creadores!!!
I love your assistant
You have German titles, but you still speak English. Why? I mean i understand english in my opinion very good but i like my native language more.
You got also a like from me! Good Video!!
The video is called "RCWL-0516, ESP and cats". Also the description is in English. But I also added German translation. And German and English subtitles. If you're using YT in german, you'll get the german translation.
The cat will kill esp with static electricity
That is my educated assistant! If she destroys s.th. then it's on purpose. Because she is evil. Because she is a cat...
@@nenioc187 :-))
cats
"Assistant!" ;-)
Human Presence Radar (HPR) Body heat
Schreckliches Video 👎👎👎