×

SparkFun Electronics will be closed on July 3rd, 2015 in observance of Independence Day. Any orders placed after 2:00pm MT on July 2nd will be shipped out after the weekend. Thanks!

Creative Commons images are CC BY-NC-SA 3.0

$ 9.95

added to your
shopping cart

quantity
In stock 695 in stock
9.95 1+ units
9.45 25+ units
8.96 100+ units

Description: This is a simple to use motion sensor. Power it up and wait 1-2 seconds for the sensor to get a snapshot of the still room. If anything moves after that period, the ‘alarm’ pin will go low.

This unit works great from 5 to 12V (datasheet shows 12V). You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V.

The alarm pin is an open collector meaning you will need a pull up resistor on the alarm pin. The open drain setup allows multiple motion sensors to be connected on a single input pin. If any of the motion sensors go off, the input pin will be pulled low.

We’ve finally updated the connector! Gone is the old “odd” connector, now you will find a common 3-pin JST! This makes the PIR Sensor much more accessible for whatever your project may need. Red = Power, White = Ground, and Black = Alarm.

Documents:

Recommended Products

Customer Comments

  • It’s not a motion detector. It does not “see” movement. It looks at a target and sets itself to that. When a hotter or colder temp is detected the signal pin is switched. In a commercial PIR there is a counter which is used in conjunction with a segmented lens. As the warm or colder target is seen through the lens, the counter is incremented. When the preset count is reached the support circuit switches a relay that is wired to an alarm panel. The major problem with PIRs is not being installed correctly. Sun light creeping across a floor or the warm air from a heater vent can set them off. If you have a cat and want to use one of those, be ready for a pot load of false alarms. They climb everywhere and it’s impossible to compensate for them. And if you want to use them for open air surveillance, they don’t do too well. Better to have a fixed object like a wall in the field of view.
    I designed and installed high end security systems for 25 years.

  • To bypass the voltage regulator, you would need to solder some jumper wire on the PIR motion sensor so that the 3.3V bypasses the regulator. Just check out the datasheet on the L78L05 voltage regulator that is on the PIR sensor http://pdf1.alldatasheet.com/datasheet-pdf/view/22688/STMICROELECTRONICS/L78L05.html.

  • Wow! What an incomplete datasheet that one is! I mean, why do the manufacturer omits such relevant data as distance range of operation? 3m? 3ft? What? A mostly empty sheet with a nice pic of the module and a few bits of info in a corner. Wow. Just wow!

  • I tried running at these at 5V and they behaved erratically (5V isn’t enough to power the regulator.) Then I tried bypassing the regulator and powering it with 3.3V, again the sensor would go of for no reason (even the smallest amount of noise on the power would trigger the sensors.) I then hooked the regulator back in and just supplied it with 12V and it worked as it is suppose to.

  • I can’t tell from the datasheet what kind of ranges it can handle. Obviously in the video the hand is less than a foot from the sensor, but what about 20 feet? 40 feet? 1000 feet?

    • The only thing I could find was 3-7 meters. Depending on how good the lens is they can see 30 meters but I’m not sure on this one. It’s made by Hanse and they don’t have any better datasheet on their site. info

    • I don’t know, but I would like to know as well.

Customer Reviews

2.5 out of 5

Based on 2 ratings:

5 star
0
4 star
1
3 star
0
2 star
0
1 star
1

1 of 1 found this helpful:

Terrible PIR sensor, avoid

(1) Signal wire is black, ground wire is white.

These should be reversed. I might have killed two of my sensors because the wire colors don’t match up to expectations.

(2) The manual says that there should be a 10k pullup resistor on the arduino, why can’t this be built into the electronic itself? The power rail is right there.

There are other PIR sensors on the market. Stay away from this one.

Hi, Pin outs for this sensor are clearly listed in the product description. (Red = Power, White = Ground, and Black = Alarm.) Sorry that this color pattern is not satisfying for you. As for the pull up resistor, some processors have built in pullup resistors. So leaving the sensor bare allows for a wider range of applications.


I am stiill trying to get it to work

i had it hooked up to an LED and it was flashing like crazy whether there was motion or not. Then I found this site http://bildr.org/2011/06/pir_arduino/ and added the resistor and the code from the site. It stlill didn’t work, there was no output on the screen saying “motion detected” I am using an Arduino uno, any ideas as to what I’m doing wrong? Thanks in advance. I’ve loved all the other products I’ve ordered from you including the Drum kit Kit ai - I got that working without any problem.

Hi, It sounds like you should get in touch with our Technical Support team. They’ll be happy to try to help you get up and running. Tech support @ sparkfun .com