I tried using "Vaavud Sleipnir" which makes it possible to measure wind speed anywhere with smartphone & tablet becoming an anemometer

It is possible to measure the wind speed of 2 to 40 meters per second at anytime anywhere and the direction of the wind within plus or minus 4% by inserting "feathers" in the earphone jack of the smartphone or tabletVaavud Sleipnir"is. I was recruiting funds with Kickstarter "Vaavud wind meter V 2.0"It was commercialized and reached the editorial department, I actually inserted it in the smartphone and measured the wind speed here and there.

Vaavud - Sleipnir - Vaavud - Wind Meter for Smartphones
http://vaavud.com/product/vaavud-sleipnir/

"Vaavud Sleipnir" arrives.


I will open it with Pakari.


Contents are exclusive cases with carabiner, instructions, one Vaavud Sleipnir body.


Vaavud Sleipnir can measure the wind speed and wind direction, generate a live map of the measurement point, and have the function to share measurement results to Facebook. Vaavud Sleipnir can be used on Android terminals equipped with Android 4.0 or later except iPhone, iPad, iPad mini / Air, or Xperia with iOS 7 or later.


There are explanatory texts written in the languages ​​of each country, but this is only written instructions for downloading the special application. Detailed usage can be confirmed by the application tutorial.


The body of Vaavud Sleipnir is like this.


From the top, the wind receiving part is S shaped.


The wind speed can be measured within a range of 2 to 40 meters per second with an error of plus or minus 4%. Because it is made of plastic and has little weight, it is perfect for people who always want to carry an anemometer.


You can attach it to a smartphone or tablet from the earphone jack.


Immediately at the smartphone it looks like this. Since it can not be used as it is, I will install a special application on my smartphone.


Dedicated applications are available for iOS and Android, which can be obtained from the following page.

Vaavud Wind Meter on the App Store on iTunes
https://itunes.apple.com/dk/app/vaavud-wind-meter/id674991854

Vaavud Wind Meter - Android application on Google Play
https://play.google.com/store/apps/details?id=com.vaavud.android

This time install Android application.


Tap "I agree".


Tap the icon to launch.


The application is in Japanese and the tutorial is displayed so we will continue reading.


Since registration is necessary to use all functions, tap "sign up".


After entering your name, e-mail address and password, tap "Create".


Tap "Yes".


Next is a tutorial on hints to get accurate wind speed values. In order to measure accurately, it seems to be better to hold the smartphone with Vaavud at a higher position than the head.


In order to obtain an accurate average value, it is necessary to measure until the indicator displayed during measurement becomes full.


Then tap "Start calibration" to measure accurately with Vaavud Sleipnir.


I will blow a breath on the feather portion of Vaavud Sleipnir. If you breathe in as the rotation slows down OK.


When calibration is completed, tap "Done".


In order to measure wind speed immediately, I turned to the air outlet of the air conditioner.


When you put up your smartphone, start measuring by tapping "Start".


Since the indicator of the red frame gathers up, I will continue to measure until it is full.


The measurement result is like this, the maximum wind speed (second speed) of the air-conditioning blowing is 14.4 m / s, which isLevel at which signboard with bad installation may flyAnd that. However, the maximum wind speed is an instantaneous value, and the average wind speed is 3.9 m / s which is very gentle. The wind direction seems to have been blowing from the direction of 167 degrees with respect to true north. Since the air conditioner always had almost constant wind, stable data measurement was possible.


The wind speed of the air conditioner is measured and the appearance of the wings turning around can be seen from the following movie.

How Vaavud Sleipnir measures wind speed of air conditioner - YouTube


Besides, it can measure how much wind the air is discharged from the ventilation opening of the ventilator ......


It may be possible to prevent unexpected crashes and accidents by measuring the wind speed and wind direction before drown and radio control helicopters are blown outdoors.


Also, looking at the map of the application, the results of Vaavud users from around the world are shared on Google Maps. If the GPS of the terminal is turned on, the measurement result of yours is automatically shared.


Just tap the pin on the map to confirm the measurement result OK. Since the measured time is also displayed, you can know even if you do not measure yourself if the situation of the local site on the go is measured.


Looking at Japan, measurement data was pinned in Tokyo and Hokkaido.


In Tokyo, there seems to be a Vaavud user who regularly measures the wind speed at Musashi Kosugi.


In addition, once measured data can be reconfirmed from "history", the list of "wind direction" "measurement date and time" "maximum wind speed" "average wind speed" is displayed as follows. When you turn on GPS, you can see at a glance which location data it is later.


In the Vaavud application, you can switch the measurement unit of wind speed from "meter per second (m / s)" by tapping around the area surrounded by a red frame.


By tapping as below "kilometers per hour (km / h)"


"Miles per hour (mph)"


"Knot (kt)"


"Boat feet (bft)" can be switched to five types to check the wind speed.


You can also change the unit of wind direction. Tap "Settings" from the menu button on the upper right of the screen.


Tap "Direction" to switch "Cardinal" and "Degrees".


In addition, "Vaavud Sleipnir" is accepting advance reservation on the following page, the price is $ 64 one (about 7700 yen). As a shipping cost, it is separately required for 7 dollars (about 800 yen), but if you order more than 2 items, it will be free shipping and the shipment of products will be around late April.

Vaavud - Sleipnir - Vaavud - Wind Meter for Smartphones
http://vaavud.com/product/vaavud-sleipnir/