Interfacing a bare PIR sensor with Arduino - can it be done?

In this video I'm exploring PIR sensor modules and if we can use the PIR element alone for cost-saving purposes in our Arduino projects. These sensors are often used in the detection of movement for alarm systems and automatic lights but the cost of the PIR element alone is significantly lower than the modules so if we use an Arduino, it makes sense to try and use the bare element instead.

Check out the video to see my findings and understand how you can use PIR sensors in your next project.

Tools and materials needed to make this project:

For more details check the article on my website:

The code for the analog input plotter is available on GitHub:

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Interfacing a bare PIR sensor with Arduino - can it be done?
#arduino #PIR #motion #sensor #tastethecode

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Music:

Relaxer by The Grand Affair

[juraviking]

Output signal from PIR (peak to peak over DC) is in range 0.1mV to 1mV ; resolution of ADC of Arduino 3.3/1024 = 3 mV ; without amplifier arduino is not sensitive enough to detect a change; probably what you see is a 50Hz mains AC with wires acting like antenna

[luhanxmonat]

Those are analog devices. For the same price, you can buy BS312 with digital output. Or the BS412 also has adjustable timing. You have to buy the lenses separately.

[hecanet]

The PIR sensor sensing Infrared signal, of which the human body heat is one good source. So, you don't really have to be in front of it... once there is body heat change, the sensor will detect it.

[NATURELOVERJ]

Hello Bill. I am interested in having 5 PIR motion sensors made to trigger dslr cameras for camera trap systems. I would like them as small as possible to fit into a small waterproof case, and be powered by either 18650's or AA rechargeable batteries. Once they are triggered, I want it to continue to trigger the camera until there is no more motion present. Are you interested in building them for me? I am not able to create something like that with my hands. Jay

[robotronix-co-il]

you should have parallel resistor 4K7 vout to gnd and, vout to test point - series capacitor " like in AC mic " then connect the vout to scope, then retest and try again....you should also have an amp

[DimitriPappas]

Can a bare PIR sensor be used with a Raspberry PI? Seems the analog signal is not supported, anyone know of any ways to work around this?

[noanyobiseniss]

Hi, I'd like to find a sensor to detect the bed on a 3d printer and wonder if this is a good candidate?

[hafidamrouche]

hello bill i want to ask you .. are you sure about the links you put .. because i just bought 2 sensor and i am the only person who ordered in both sensors .. and two what is the distance of detection for the HC-SR501 PIR Module the seller didn't provide the information

[aiviskri]

Interesting, I've got a similar sensor from a motion detecting light. When I connect it to an arduino, I see that it's outputing a very nice sine wave (my device's amplitude is from 350 to 720 on an arduino, or around 1.12V and 2.3V), with the period being about three to four seconds. When I wave my hand, the amplitude of one cycle seems to change, and then the sine wave goes back to normal. I have no idea why it's behaving like that.

[Harryby]

Help me “HM 612 human sensor of 6 pin configuration” with pin notation and usability

[techietony_test]

I'd be curious what the light source is above you desk. Flourescent lights produce light at a high frequency that your eyes don't necessarily perceive, but that circuit might sense and the arduino could show you in your "scope", or maybe the ballast of the light source might produce nose at that frequency???

[bobcat]

What is you measure out of the bare PIR sensor? You mention between 720 and 820 at rest is the 700 mA. Lost like the output is actually less when trigger? Is that right. I am trying to figure out the out put of the bare PIR sensor in voltages.

[vistalite]

Could the sensor be picking up the infrared heat coming off your hand, or the static electricity that's moving in the air as a result of your hand moving through the air?

[fredcook]

All pyroelectric materials are also piezoelectric, therefore mechanical vibrations (you pushing the desk) will also produce a signal.

my pir sensor not only sense me but it also sense any object why it is happening

[radindolarpasco]

It can detect infrared radiation like body heat

[vaishakb]

How do I transfer the Data to the excel sheet ?

[jaimintopiwala]

can we measure distance using PIR sensor??

[_Osman_Dag_]

Hello, I have a question, can you help ?

[MMaheshThakur]

i want to controll my fan so that i turn off automatically when no body is in room. which sensor i should use,