SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-28T03:50:13-06:00SparkFun ElectronicsCustomer #779951 on SEN-13285 - PIR Motion Sensor (JST)Customer #779951urn:uuid:38a9d99c-2c93-5e88-761f-e1c83622c6272016-03-08T03:03:00-07:00<p>Hi, hope you’ll find this interesting : http://www.instructables.com/id/The-Flying-Manatee/ It’s using sparkfun micro size servo and Pir.</p>
Customer #713426 on SEN-13285 - PIR Motion Sensor (JST)Customer #713426urn:uuid:d1130e01-0d33-4500-f673-03318ab044b72015-10-08T12:06:09-06:00<p>I got this sensor from a while, however i have some question on it , in the board there is '+' an 'AL'in my sensor the '+' is connected with black wire, 'AL' with red wire but in the description: Red = Power, White = Ground, and Black = Alarm. my question is what is the correct connection, what is in my board or the description????<p>Thanks</p></p>
Customer #332315 on SEN-13285 - PIR Motion Sensor (JST)Customer #332315urn:uuid:e66a583a-2e6b-8be9-9aea-6e64defd93422015-08-29T19:01:48-06:00<p>Update: After a lot of consultation with Sparkfun tech support I was able to trace the problem to a faulty oscilloscope that I was using. This sensor does, in fact, work when supplied with 3.3v. Just be sure that the power is clean because any sort of noise will trigger false alarms.<p>Original comment: Despite what the product description says, this will NOT operate at 3.3v even if you bypass the regulator. The circuit needs a full 5v to operate, so you need to supply exactly 5v if the regulator is bypassed, and if not bypassed, you need to provide >7v. If the voltage is too low, it will constantly and randomly bring the alarm pin low, regardless of what the sensor sees.</p></p>
Aristarco on SEN-13285 - PIR Motion Sensor (JST)Aristarcourn:uuid:4d180be5-16eb-6f51-c764-4d20d4ac3ada2015-04-07T12:02:44-06:00<p>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!</p>
Customer #494226 on SEN-13285 - PIR Motion Sensor (JST)Customer #494226urn:uuid:0ea17d7c-4b82-5fc1-827b-8fa34aad04b92015-04-03T18:24:55-06:00<p>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.<br>
I designed and installed high end security systems for 25 years.</p>
TFlock on SEN-13285 - PIR Motion Sensor (JST)TFlockurn:uuid:588c8e36-f68e-52a1-2546-f7ab6ff4e2f02015-04-03T16:32:40-06:00<p>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.</p>
GearJammer on SEN-13285 - PIR Motion Sensor (JST)GearJammerurn:uuid:93665055-a6f5-4f50-f43b-50cb77a344112015-04-03T09:26:46-06:00<p>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.
<a href="http://mosaic.cnfolio.com/ENG500Coursework2013CW1MILUSK" rel="nofollow">info</a></p>
Elimegrover on SEN-13285 - PIR Motion Sensor (JST)Elimegroverurn:uuid:32a0312a-8c34-b50a-054a-383bfdfeec5a2015-03-31T16:29:43-06:00<p>I don't know, but I would like to know as well.</p>
josdavlar on SEN-13285 - PIR Motion Sensor (JST)josdavlarurn:uuid:772b2d0b-4b50-42a3-12d6-be741158b3072015-03-27T12:54:04-06:00<p>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?</p>