Pir too sensitive-PIR security lights too sensitive

No Arduino, Raspberry Pi or anything like that is needed. A PIR sensor is an electronic sensor that measures infrared light radiating from objects in its field of view. Each object with a temperature above absolute zero As you can see in the pictures above, the PIR has some funny dome-like bubble, which is a collection of lenses covering the sensor. I made this drawing with Fritzing , a great tool to make electronic design!

Pir too sensitive

Pir too sensitive

Quote from: jremington on Apr 18,am. It is marked RL2 on the schematic below. Share This Page Tweet. So I want help as I am absolute beginner for these sensors. A Pir too sensitive test could be: cover up the PIR with for example a towel. And why?

Steve wang latex masks. What is a PIR sensor?

Your thoughts? Steve 7 Aug Your own trials, and advice to others, have made for interesting and educational reading. You could use a cheap Arduino. That should prevent her setting off the sensor Kelley SimpliSafe Home Security. Thread starter JM Start date Dec 19, PingBack : danamartensmfadt. It looks like you're new here. I suspect this feature Pir too sensitive used if paired with an Pir too sensitive system set it to ON. Passerby Passerby This is really helpful, cause I to that we can take a chance with cheaper PIR sensors yes we have to test them properly! Show Ignored Content.

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Add pictures here. Add image file. Bold Italic Underline. Upload Image. Add reply. Rate this thread. Does it still go on and off? If so, then it's faulty. Do you own a camcorder? If so, pointing it at the lighted area to see if anything is triggering it may work.

Any gas flues nearby? A lot of the cheaper PIR's are RF radio frequency sensitive and can be triggered by quite low amounts of power. There is no easy cure for this unfortunately except maybe buying a better quality one with adequate filtering. Hopefully it will be something like a cat or central heating flue that is your problem.

Chris -- Spamtrap in use To email replace Click to see the full signature. Thanks to everyone for their suggestions - sorry I didn't reply sooner. Looks like the insulation tape possibly with foil solution is the best choice to start with - I'll give it a go. OT: Chistmas Quiz - suggestions? Posted in Woodworking Forum. Share To. Keep me logged in. Register new account I forgot my password. Save Edits Use Original Image.

In my case pin 1 and 2 are soldered together. You could try changing the sensitivity, and see if it improves the situation. Not sure what the black part sitting under the PIR is though? Notify me about new comments email. Once the capacitor is saturated, after approx. I wonder if anyone has ever just used a motion sensor from SimpliSafe to do something similar. Also, according to my knowledge, the PIR sensor detects difference in heat between two given points.

Pir too sensitive

Pir too sensitive

Pir too sensitive

Pir too sensitive

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The lowest setting, when facing the philips screw of the potentiometer, is all the way to left. When doing your first tests, turn it as low as possible … until you notice there is a need for a time delay.

This can however also cause false positives in smaller spaces — i. Which in turn could miss movement at a longer range. I had to wave both arms to get detection. No I pretty much only needed to move a finger to be detected. Donations are very much appreciated, but not required. Donations will be used for web-hosting expenses, project hardware or a motivational boost a drink or snack. Thank you very much for those have donated already! It's truly AwEsOmE to see that folks like our articles and small applications.

There are comments. You can read them below. You can post your own comments by using the form below , or reply to existing comments by using the "Reply" button. What type of sensor is suitable for hands detection directly over the sensor?

For your purposes you could consider a touch sensor Capacitive touch. I found this article at Instructables , which gives you and intro how to build those and work with those on an Arduino. Hope this helps. Good to hear from you Han! If I separate the 5 sensors cm apart so that it will just detect my whole hand to trigger the sound, it is still wise to use a PIR sensor or motion sensor?

Sorry new to sensors Can I adjust the angle of detection for motion sensors? Sounds like the old theraminprinciple. Essentially it worked on a RF field and when you got closer to the wand the load on the RF increased.

The circuit worked on having a sensor between the transmitter and the antenna. The closer you got to the wand the current sensed increased. That loading effect changed the pitch through another circuit the audible frequency modulator. The music of the rock and roll group the Ventures used a theramin for wild sound effects on a song or two. Can anyone advise? I have a pir sensor for a car alarm.

The problem is that I turn the alarm on and immediately the alarm sounds. Many thanks. If you are using an Arduino, then you could have it in setup loop until the PIR is ready eg. For example, by placing a short tube or pipe over the PIR so the view to the sides are limited just an idea.

You could even try the sensor by removing the little dome and possibly combine it with a short piece of tube or pipe. Are there enough to put 5 sensors and 2 speakers and 5 LED light strips?

However … you might want to look at a larger Arduino, since the code needed to control all this might be too much for the limited memory of an Uno. So maybe look for an Arduino Mega or something like that. Love some suggestions as im stuck and very new ot electronics. Please advise. Hi, I have found a solution. Thank you very much for sharing! Oh my goodness, I did not think about that ….

Both options are cheap too. An ultrasonic sensor might work very good as well — I found this article discussing a few options , including an option I did not think about.

There are quite a lot of different sensors out there, I did see this Arduino Forum topic discussing a short distance sensor. Mouser , a well known component distribution company, has quite the list of components that could help. Thank you for the links. They said that this Sharp Sensors has capability up to cm range detection, which is really nice. Will those sensors work after i switch off my room lights? I read about that one too. Thanks Bob for the tip! I would think it does detect that yes.

I suppose it also depends on the object size and type of material. Even though this is not the place to post such a request the forum would have been better , if anyone feels an expert to help, then please feel free to post a reply here. One question, do you know a way to prevent the pir from triggering at startup? Thank you for the compliment. Thanks for your quick reply. The challenge for this project was to use only simple components, so there is no arduino or pi involved.

Was hoping maybe there was some sort of trick to prevent the trigger. I will see if i can find a schematic for a delay. Oh sorry, missed that point, doh!

Lesson learned; never try to answer a question when you just woke up and have not had coffee yet. I think the challenge would be that if you add a delay, the delay might be over the PIR, causing it to always delay.

Please post your solution of you found one though! Others might find this helpful as well! There are better ways to start a day… but i really do appreciate your respons! That link might be just what i need. I will first try to wrap my head around it.

It would be interesting to see what you come up with! Does the alarm have something like an LED lighting up or Siren going off? I tried finding the schematics, so I could post it here, but the screenshot of the video is kind-a hard to read. Took some time, but here is the schematic, kinda… I drew it myself.

I have placed this in front of the buzzer so the transistor a BC acts like a switch for the buzzer. Once the capacitor is saturated, after approx. So now I have your PIR test circuit with a transistor sounding the buzzer. The PIR is powered through a latching circuit based on a The latching circuit is triggered by a mHz receiver, using the linear output, supplying a pulse to trigger the latch. Great article! One question… how do I know what resistor is suitable for the PIR if it does not state anywhere what is the expected current.

My PIR looks exactly like yours. Do I even need to put a resistor? Thank you for the compliment! However we need a very exact test reults for different distances eg: 1,3,5,7 meters. The only way I know to properly determine the coverage range of a PIR is by simply testing one setting at a time which is hard with the potentiometer on the PIR.

It takes a bit to tweak it to the right sensitivity. So, sorry that I do not have a cookie cut solution or answer to your question …. Actually i dont attached any delay in programme still the led is not change its position for around 4 seconds of operation.

Is there really a huge difference? The reason I am asking these questions is because I am getting a complete product KIT customised from a Chinese company to offer the security solution in service based model. If possible and if you have some spare time, can you provide me your email address? I woud assume that there might be a difference in quality, but it might also depend on wether or not there is a case around it.

You might have to test a few to see if there is a significant difference. Thanks Hans for taking time and answering my question. This is really helpful, cause I know that we can take a chance with cheaper PIR sensors yes we have to test them properly! Do you also get involved in Alarm panel to CMS communications area..

Thanks Hans, its good to hear that you want to start a project in this area. If you need any help to understand the available technologies, methods, pro-cons etc… let me know, I have done a lot of research …although i am still confused with some of the protocols.

I have a volt PIR. I use the trigger line to operate a relay. My problem is that the trigger circuit is not at zero volts when the pir is not detecting an intruder. How can I prevent this? Worth looking into? This article on bypass capacitors might be helpful ….

Also are there any sensors PIR or any other which has a straight constant width detection range and not increasing for the detection of humans? It will narrow down the width. But: please post here if you find any! I just had not had the time or need for it.

I also included an LED that would let me know when the camera […]. When there is a motion LED is on. This happens always and periodically when there is no motion? Thank you. But I checked with 3 sensors all have the same problem.

I checked with different sensitivity but still have the problem. I am using Adafruit Huzzah. I have never used the Huzzah, but it sure looks interesting! You could build a cage around the sensor from, for example, chicken wire or something like that.

Hopefully that keeps the lizard out …. I am in serious trouble here, I tried to use PIR with raspberry pi for a project to detect motion and the sensor is detecting the motion but the problem is that it also triggers without any moment when faced towards wall with some distance.

It keeps triggering two times in each minutes like in 6th second and 51th second in each minute continuously. So I want help as I am absolute beginner for these sensors. Please help here.

You could try changing the sensitivity, and see if it improves the situation. Additionally, either the PIR is defective which I have not encountered yet! Keep in mind that heat sources and critters can trigger the PIR as well. And thank you for posting it here as well! As for thing being expensive in Nepal: Oh my, and I though I had it rough when I was living in Holland expensive shipping, and Dutch customs charging an arm and a leg on import and sales taxes. I am thinking to use it to detect movement of small insects that emit a tiny amount of IR.

I would not have an idea how much change in IR would trigger a PIR, but you can set the sensitivity and experiment with that to avoid false positives because a bug happened to walk by. There is diode in the circuit, so you cant feed it using 3. If you want to use 3. This is to be achieved by using the application of IoT and raspberry pi 3.

Thereby detecting the IR emitted off of the person close to the sensor. Needed a second opinion on this. So if a lazy person would be sitting still all day long, your sensor would probably not detect this person. Hi Hans, Thank you for the timely reply. Would you have any suggestions regarding which sensor to use to improve the result of my use case.

Also, according to my knowledge, the PIR sensor detects difference in heat between two given points. Your thoughts? Of the top of my head, I would not know a simple to implement alternative. I have not tested this and I would assume that it will be very hard for a person to not move, additionally add some logic to your code that assumes nobody present in the cubicle when there was not motion detected for say 20 seconds or a minute.

Again; testing will give you an insight in what would work best. I would say that my reasons for the ESP would be: price, size, and simplicity. Arduino like devices would not need an SD card with an operating system, and the operating system would not as easily corrupt. Hope this helps …. Hi Hans, Thanks a lot. That was quite helpful. This would be required in order to improve efficiency in terms of the output. Would it help if I connected two Pir sensors in parallel to detect motion, thereby improving my output?

If this is what you are already doing, then consider trying another PIR — yours might be faulty. Any specifications mentioned are manufacturers specifications. Do you have any suggestions? The other one is for Sensitivity, or how sensitive by changing the range — or how far it looks it is to motion. So that when someone passes by it will trigger a voice message. The Arduino website also shows a project that helps you create audio on an Arduino.

A quick Google did not give me much info on your question … sorry. I am having problem with association. What should i do? The distance between my pir and my alarm is too far for the signal.

Is there a way to create a device to go inbetween pir and alarm? I did find an example at StackExchange. My pir alarm is wireless. The distance between point a and point c is too great so was hoping to find something to go at point b to bounce the signal from pir to the alarm box across a greater distance than they are designed for.

My idea is to take a second alarm box and remove alarm sounder. Attach the signal sender from a spare pir in sounders place. Creating a middle distance receiver and sender in one. Does this sound feasible to you?

What type of wireless signal is being used? WiFi, Bluetooth, 2. I have a project that i have to make a robot that detect a motion and follow it. It just detects that there is motion, not where or in what direction it may be moving. See this example project. I only have one question left… if something pass in front of the pir can we know the position of it in the range of detection… like if i m standing in front of the sensor is there any code that can say that i m 20 degree right the center of detection of the pir?

As for your question; under normal circumstance this is not possible with a PIR. I would like to know if a PIR can be replaced on a trail camera that a company stated the components are proprietary? The cameras just came out of warranty and the issue is that they continually take pictures once triggered.

I have taken apart the trail camera and seen where the PIR is but cannot get any info from it as a part number. It has 3 pins. I was wondering if a generic PIR or another brand would work? I can imagine that they have used a cheap PIR like the one shown in this article. You may run into 2 scenarios; a they used a little board like the ones you have seen here, or b they sensor the metallic round item with a square on it — kinda looks like a transistor is fixed on the main PCB of the camera.

In scenario A, you could try to determine what the 3 pins in the camera are. One pin is ground and another is power typically 5V. Finding the pin layout may be challenging though. I think the sensor itself has 3 pins as well. The only thing is that this PIR looks to be 2 parts. The top part is like the one on this site in Fig 2 and it is 6 mm in wide and there is a black part on the bottom that is 7 mm wide, the height is 1 cm in total; 3 mm is the silver part like the one in fig 2 of this site.

Not sure what the black part sitting under the PIR is though? Hmm, that is kinda hard to judge without a picture. If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you. Log in or Sign up. DIYnot Forums.

Just put a welcoming lantern light at the door up. If all else fails read the instructions. DESL , 11 Nov The sensitivity may be for the PIR range, not the daylight. There may either be a different turn knob for this, or a small photo cell elsewhere on the light which may have a small round black sticker covering it for commissioning only.

Lectrician , 11 Nov And the sticker is off? Is the light in a dull area of you property? If not, the fitting is faulty. But it could be just too dull - Is it in a covered porch? You could try testing it first. Joined: 3 Sep Country:. Select the supplier or trade you require, enter your location to begin your search.

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Make PIR sensor less sensitive

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Currently they are detecting motion about feet away. Running the sensor through a tube cardboard or PVC seems to effectively reduce the sensor to a very narrow beam of detection, however I also need to reduce the overall range, as even with through the tube the sensor fires off at feet away.

I have tried placing plastic wrap or the reflective static free plastic that electronics are shipped in over the end of the tube, these do not seem to do the trick. You can attenuate by using thin sheets of polyethylene. Polyethylene is the same material that the PIR lens is made of.

It will pass, but attenuate the wavelengths you are interested in. Find something around. You can either do this physically using an IR opaque material as Jason suggests, or electronically by modifying the sensor. The resistors don't always seem to have the same values on the boards.

But by simple observation, you can see that for opamp OP1, it is operating in non-inverting mode. All of these require removing and adjusting components though, so maybe the physical way is easier. If you can access the load resistor across the PhotoDiode, PD , then you can change the gain of the receiver. Since light generates current, gain is proportional to R. I remember designing a light sequencer in the 70's using a cheap electret mic inside the drummer's kick drum. Needless to say it was too sensitive.

So I taped the aperture and the string of spot lights which spelled the band's name sequenced with the beat of the music. It worked well until they changed the sign to 1kW spot lights, and then the triacs burnt out. I have had the same issue with a PIR sensor I bought online cats, and even the wind was setting it off. I have placed a coffee can around the sensor cut off the bottom metal lined, not plastic and placed the lid on it.

The lid is a semi-clear. I just did this a few minutes ago, will let you know how it works. The IR sensor is transmitting through the bottom of the pill bottle no modifications.

I can slide the remainder of the pill bottle in and out of the empty T. The wind is no longer triggering it, and when the pizza guy shows up in my driveway we will see if it goes off properly. I worked around this problem by using a prescription pill bottle and foil tape the kind used for sealing heating ducts :. In my case the cylinder creates a field of view approx 2 or 3 feet wide and about 12 feet long maybe less. The module you have is the old RadioShack sold, manufactured by Parallax, BISS based modules, which lacked the sensitivity trim pot.

The way the newer ones handled it was by placing a large trim pot in series with a fixed resistor. It is marked RL2 on the schematic below. The light is only sensitive a few feet away. You can attempt to change this resistance on your module. The lens provides multiple benefits to the sensor, by dividing the field of view, providing a wider angle, and focusing IR into the sensor.

No lens, no benefit. This should be enough to both narrow it's view, and weaken it's sensitivity to distance. If you want a single foot of distance, then try this before taking a soldering iron to the module. The Lens should pop right off. The Stack Overflow podcast is back! Listen to an interview with our new CEO. Sign up to join this community. The best answers are voted up and rise to the top. Reducing the sensitivity of a PIR sensor? Ask Question. Asked 7 years, 5 months ago.

Active 3 years, 9 months ago. Viewed 35k times. Does anyone know of a way to reduce the field as low as maybe a 1 foot radius? I am using them with an Arduino Mega or an Arduino Uno. Passerby JonathonG JonathonG 2 2 gold badges 5 5 silver badges 11 11 bronze badges. But this one appears to go thru a fresnel lens or beam diffraction grating.

Jason Jason 1, 1 1 gold badge 16 16 silver badges 28 28 bronze badges. I would adjust the values of R7 and R8 to reduce the gain and make the device less sensitive. Cybergibbons Cybergibbons 1, 1 1 gold badge 13 13 silver badges 20 20 bronze badges. OK after some field work, and suggestions on this page, here is what I did: Cut off the threaded end of a pill bottle Duct taped a used toilet paper tube around the sensor Placed the pill bottle inside the T. And abandoning the coffee can idea!

Hope this helps. Kevin K. Hill Kevin K. Hill 11 2 2 bronze badges. Wrap the foil tape around the cylinder with a bit hanging off the one end On the end with a little extra foil tape, connect that towards the PIR sensor In my case the cylinder creates a field of view approx 2 or 3 feet wide and about 12 feet long maybe less.

Alin 7, 16 16 gold badges 53 53 silver badges 81 81 bronze badges. The Better option is simpler. Remove the Fresnel Lens.

Passerby Passerby It's been years since I've had access to this exhibit to work on it, but hopefully your answer will help someone else. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.

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Pir too sensitive