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Technical Details
Description
This is a simple to use PIR motion sensor with Grove compatible interface. Simply connect it to
Stem shield and program it, when anyone moves in its detecting range, the sensor outputs
HIGH on its SIG pin.
The detecting range and response speed can be adjusted by 2 potentiometers soldered on its
circuit board, The response speed is from 0.3s - 25s, and max 6 meters of detecting range.
Specification
Grove compatible interface
Voltage range: 3V–5V
2.0cm x 4.0cm twig module
Detecting angle: 120 degree
Detecting distance: max 6m (3m by default)
Adjustable detecting distance and holding time
Application Ideas
Motion sensor
Thief-guarding System
Switch
Industrial automation
Documents
For all Grove users (especially beginners), we provide you guidance PDF documents. Please
download and read through Preface - Getting StartedandIntroduction to Grove before your
using of the product.
Please visit our wiki page for more info about this product. It will be appreciated if you can help
us improve the documents, add more demo code or tutorials. For technical support, please
post your questions to our forum.
Note
Potentiometers are not included.
Grove - PIR Motion Sensor
SKU 101020020
IN STOCK 50+ Available
1
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USD
Halloween Candy Machine
Make a Candy Machine when Halloween is coming.
Dimensions 40mm x 20mm x 15mm
Weight G.W 10g
Battery Exclude
Voltage range 3V–5V
Detecting angle 120 degree
Detecting distance max 6m (3m by default)
Part List
Grove - PIR Motion Sensor 1
Documents
WIKI
Grove - PIR Motion Sensor v1.2 PDF
BISS0001 Datasheet
Fresnel lens 8120 Datasheet
Learn
0
Juan Luis on Oct 19,2016
Trying to use with Linkit One and Base Shield v2 but only high voltage gets all the time.... what do I'm
missing?
Questions and Answers
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William Brohinsky on Jun 20,2017 23:20 PM
William Brohinsky on Jun 20,2017 23:20 PM
It is an IR sensor. To be able to get a meaningful signal, it must be placed where the background IR is low enough
that it doesn't trigger the sensor board (or the optional resistors and pots must be attached and they must be
adjusted to reduce the sensor's sensitivity below the background level.To test the sensor, connect and power it,
read it out. It will probably be responding to your body, your computers, etc. Place a blanket in the freezer for 15
minutes, then wrap the sensor in it and place an inverted (empty) drawer over the wrapped sensor. This should
produce a low signal. (You could also just stuff the sensor in the freezer and shut the door!) If you don't get a low
signal, check your wiring!Once you've achieved a low (indicating that it is not "seeing" enough IR to trigger the
output) you can expose it to more light or a warm body, and it should respond.PIR sensors are used indoors,
usually in unoccupied rooms, so that, when a person enters, it will see they are present by the IR (light emitted
from their bodies by body heat) and turn on lights. Simulate this environment to test it.
It is an IR sensor. To be able to get a meaningful signal, it must be placed where the background IR is low enough
that it doesn't trigger the sensor board (or the optional resistors and pots must be attached and they must be
adjusted to reduce the sensor's sensitivity below the background level.To test the sensor, connect and power it,
read it out. It will probably be responding to your body, your computers, etc. Place a blanket in the freezer for 15
minutes, then wrap the sensor in it and place an inverted (empty) drawer over the wrapped sensor. This should
produce a low signal. (You could also just stuff the sensor in the freezer and shut the door!) If you don't get a low
signal, check your wiring!Once you've achieved a low (indicating that it is not "seeing" enough IR to trigger the
output) you can expose it to more light or a warm body, and it should respond.PIR sensors are used indoors,
usually in unoccupied rooms, so that, when a person enters, it will see they are present by the IR (light emitted
from their bodies by body heat) and turn on lights. Simulate this environment to test it.
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ScottF on Apr 11,2017
I wish to mount this PIR sensor outside in a waterproof box. Can you please advise what kind of material
can be used to cover the sensor that doesnt interfere with the passive infrared and is still suitable for
outside (i.e. waterproof and U.V. light stable).
0
Osman Da? on Mar 20,2017
Hi this pcb nin there is a friend who has a drawing pc too?
0
on Oct 19,2016
Hi, if I implement this PIR sensor on the car that will move around, will the sensor sense the movement of
the car without any human here?
0
Richard Conley on Oct 19,2016
Is this usable outdoors? I'm worried specifically about rainwater.
William Brohinsky on Jun 20,2017 23:20 PM
It is an IR sensor. To be able to get a meaningful signal, it must be placed where the background IR is low enough
that it doesn't trigger the sensor board (or the optional resistors and pots must be attached and they must be
adjusted to reduce the sensor's sensitivity below the background level.To test the sensor, connect and power it,
read it out. It will probably be responding to your body, your computers, etc. Place a blanket in the freezer for 15
minutes, then wrap the sensor in it and place an inverted (empty) drawer over the wrapped sensor. This should
produce a low signal. (You could also just stuff the sensor in the freezer and shut the door!) If you don't get a low
signal, check your wiring!Once you've achieved a low (indicating that it is not "seeing" enough IR to trigger the
output) you can expose it to more light or a warm body, and it should respond.PIR sensors are used indoors,
usually in unoccupied rooms, so that, when a person enters, it will see they are present by the IR (light emitted
from their bodies by body heat) and turn on lights. Simulate this environment to test it.
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ae on Apr 14,2017 10:44 AM
Any transparent material, Thanks.
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ae on Apr 14,2017 16:33 PM
Hello, I am sorry but I don't quite understand your question.
Please contact techsupport@seeed.cc with your set up, the code you’re using, and any errors you might be
getting.
Thanks.
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William Brohinsky on Jun 20,2017 23:13 PM
This is a PIR sensor. It indicates the Presence of IR (Infrared light). It has settings that can be controlled, to make it
more sensitive or less sensitive, but it doesn't differentiate anything but the amount of IR within it's "View". This
view is a 120-degree cone which has its point at the center of the white 'dome', and extends from the board on the
dome side. All sources of IR within that cone will be focused onto the element in the sensor, and will be summed
(contributing by the square law: double the distance, the received IR will be cut in half.)The sensor board can be
adjusted for sensitivity, which allows some compensation for IR sources in the background. However, that
assumes the IR sources are not changing, and aren't moving around. The sensor integrates the heat from the
entire surface (visible to the sensor) along with every other heat source to produce the analog signal, which is run
through a comparator to provide the output signal. That means the entrance of two large dogs could be
'recognized' as the entrance of a single human. Also, if an IR source is brought into the view, the sensor would
always indicate a presence, regardless of how many people came or went.Basically, because of the need to control
the environment, the PIR sensor is meant for use indoors. It is easily fooled, even then, by a heating
register/radiator, hot plate, electric kettle, etc. Likewise, it doesn't have a mechanism to recognize the entrance of
more than one person.Placing a PIR sensor on a car will expose it to many IR emittors: People, animals, car engines
and exhaust systems, the Sun's rays (which carry considerable IR), Industry, trains... and it will be difficult to sense
any single thing or person. Additionally, if you set it so it can recognize the presence of one human added to the IR
flux from the sun at noon, a cloud will easily drop the background IR flux so adding a human to the scene will not
trigger the sensor...In short, whatever you want to use an IR sensor for on a car is unlikely to work, and another
sensor type should be considered.
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Jacket Chen on Oct 20,2016 10:44 AM
Hi Richard.Yu can use it outdoors,but take some measures to prevent water is unavoidable.
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0
Cheryl Hrynkiw on Oct 19,2016
Another nice box-mountable sensor that NEEDs pin connectors on the backside (or out to the side).
0
Mille Novanta on Oct 19,2016
Hi, I've the PIR sensor v1.1b . I would know some things: The distance trimmer is too sensitive near the
"limit" zone. There is like 1/20 turn between nothing revealed, and continuous high signals. Which CdS
photoresistor (how big) should I connect to
0
Jeffrey Yang on Oct 19,2016
hiI have a PIR motion sesnor version 1.1bI'm curious about one of the Specificationsthe Detecting angle:
120 degreeit means the sensing range is in front of the sensor? above the sensor?or both of them?this is
not clear in the speci
0
Ben Smith on Oct 19,2016
Hi there. Can this be set up to provide a close to a voltage free contact? Ie. replace a dry contact doorbell
which currently has zero volts to simply close a circuit? If not do you have pair which can do this? Thanks
in advance
0
Mathieu Calvo on Oct 19,2016
Hi, is it possible to adjust sensitivity to about 1 meter?Thanks
12
William Brohinsky on Jun 20,2017 23:23 PM
You can use it outdoors in a suitable enclosure, which must either be transparent to IR light, or have a hole that
the sensor can "look" through. If the hole is just the size of the dome, you can place it with RTV around the edge of
the hole which seals the hole to the sides of the dome.Note that outdoor use will be affected by ambient IR
sources: the Sun, passing cars (usually the exhaust systems, but also engines) and other motor-vehicles, groups of
animals, groups of children, etc.
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Jacket Chen on Oct 20,2016 10:47 AM
You can see a white guy onto the board,the sensing range is in front of the guy(vertical direction of the board).
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Jacket Chen on Oct 20,2016 10:43 AM
Hi,Dear.You mean to use PIR Motion Sensor instead of ordinary doorbell button, when close to the PIR Motion
Sensor, the bell will ring?If so, you also need to plus a relay to control Sensor.
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Yuri Qiu on Oct 20,2016 10:41 AM
Hi if you view the WIKI there was told you Measuring Range is 0.1m to 6m. So it is can work on 1m.
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