accelerometer compass

data to the actual gravity coordinate. Generally, it can be set to null by default. The third is an array of 3, indicating that the data obtained from the accelerometer is in onsensorchanged. The fourth is an array of 3, which indicates the data obtained from the magnetic sensor.In onsensorchanged Well, the basic logic is like this. The following is an example of a simple test direction, which can monitor the user's direction at all times.

. The second is a conversion matrix, which converts the magnetic field data to the actual gravity coordinate. Generally, it can be set to null by default. The third is an array of 3, indicating that the data obtained from the accelerometer is in onSensorChanged. The fourth is an array of 3, indicating that the data obtained from the magnetic sensor is in onSensorChanged. Well, the basic logic is like this. The following is an example of a simple test

(r.id.tv); Sensormanager = (Sensormanager) getsystemservice (Sensor_service); Get direction Sensor light sensor sensor.type_light value[0], representing light intensity sensor sensor = Sensormanager.getdefaultsensor (Sensor.type_orienta tion); Listener = new MyListener (); Sensormanager.registerlistener (listener, sensor, sensormanager.sensor_delay_game); } Private class MyListener implements sensoreventlistener{float startangle = 0; When sensor data changes,

I just followed the video to learn the operation examples of sensors in Android, and made a very simple compass application using the direction sensor... Sensor functions are rarely used in work projects, so many of them don't know. Now I want to learn more about it as a step-by-step approach... First paste the software for final operation The image material used in it is a temporary PPT. It is very simple and can be used. This is not the point. The

Steps:(1) first, mem3280 is an I2C device, so the first step is to check the chip spec and determine its I2C address (0x30)(2) After the address is determined, add I2C device information in the kernel/ARCH/ARM/mach-vc0882/board-vortex.c file:1212 static struct i2c_board_info i2c_devs1 [] = {1213 # ifdef config_sensor_ssz03041214 {i2c_board_info ("ssz0304-sensor", 0x55 ),},1215 # endif1216 # ifdef config_sensor_mmc32801217 {i2c_board_info ("mmc3280-sensor", 0x30 ),},1218 # endif..................

measurement mode, single measurement I used a bit, not very good, so the following main introduction of continuous measurement. Configuration as a continuous measurement is simple, is the above mode register, address 0x02 As you can see, configuring a continuous measurement mode requires only writing the mode register to 0x00. Configuration to continuous, configured as sequential read mode there is a very important place to remember: read XYZ, must read 6 bytes at a time, that is, all r

In the project using real-time positioning, followed by the need to obtain various positions of information, coordinates, speed, direction, address ....But when I get direction information, I'm stuck in a tangle ... Originally wanted to use the course value to determine the direction, but used to find, not accurate, and then think of another method, call magnetometer, with hardware to get directions, here I refer to other people's articlesReference: http://blog.csdn.net/sunnyboy9/article/details

1. Create the Cllocationmanager object and become its proxy-(Cllocationmanager *) mgr{ if (! _mgr) { = [[Cllocationmanager alloc] init]; } return _mgr;}Self.mgr. delegate = self;2. Get started with user location[Self.mgr startupdatingheading];3. Implement functions within the Proxy method//called when the user direction is acquired .- (void) Locationmanager: (Cllocationmanager *) Manager didupdateheading: (clheading *) newheading{//NSLog (@ "%s", __func__); /*magneticheading

Curl Https://gist.githubusercontent.com/Paulche/9713531/raw/1e57fbb440d36ca5607d1739cc6151f373b234b6/gistfile1.txt | sudo patch/system/library/frameworks/ruby.framework/versions/2.0/usr/lib/ruby/2.0.0/universal-darwin13/ Rbconfig.rbYou just have to execute this sentence on the command line. (My Pro test can Mac 10.9)Original address: http://stackoverflow.com/questions/22352838/ Ruby-gem-install-json-fails-on-mavericks-and-xcode-5-1-unknown-argument-mulMac under Gem installation

How to deal with the color of the photo, from there, why start from here. I don't know what other people are based on, but I am based on the histogram, (I said the histogram is the picture of the compass is my own argument) Let's introduce the histogram first, and then give a few examples 1. What is a histogram? Histogram is a graphical parameter to show the accuracy of the image exposure means, which describes the image display range of images in

Since the discovery of programmable css syntax Sass and Sass-based css library compass I feel like c # And I feel like. NET Framework. Everything is designed to improve development efficiency and reduce the threshold for developing large web applications. When web development trends move towards the web API + Js era, Will compass and Sass become the standard for web development? This must be tested by act

Conclusion:When using Gulp-compass, you need to specify relative:false , absolute positioning (such as the Http_images_path parameter) to be valid, code:function () { gulp.src (' sass/{,*/}*.scss ') . Pipe (Compass ({ './config.rb ', ' ... /css.release/touch ', ' sass ', relative:false }). Pipe (Reload ({ true})); });Story foregr

Baidu checked two methods;First, we put the quilt on the bed and threw the cell phone hard to let it go in the air for more than three and a half weeks, turning around 720 °;The second is to put the cell phone horizontally aside and wait for it to calibrate. After my own tests,The first one is tossing for a long time, and the compass is not turned green and ineffective;In the second case, the compass is wh

Download and install sass and compass in ruby, and reference css styles. It is very convenient to use scss to write css. The first is ruby download and installation, is the http://rubyinstaller.org/downloads. After the download, open the installation file and click Next to install it. Note that Check the following to prevent future commands from being found.After the installation is complete, click it to open it.Run the gem install sass command.

Compass module ---- Utilities, ---- utilities Introduce Utilities: @import "compass/utilities"; Introduction: @import "compass/utilities/color"; Color: a set of Color-related tools1. Color Brightness is used to calculate a value.Brightness 1 @debug brightness(#000);2 @debug brightness(#ccc);3 @debug brightness(#fff); Output the brightness of the color on the co

Tutorial description: Tool used: Corona SDK Execution difficulty: normal Operation Time: one hour Step 1: Application Overview Using the prepared image materials, we will compile our own compass Application Based on Lua and Corona SDK APIs. Basically, the final product is similar to Apple's own official compass app in iOS.Step 2: Target Development Platform First, we need to select the operating pl

Compass implementation (can be changed according to the lens rotation)The code is as follows:Variable Description:Compassguiskin skin to show compass mapTag label map used as compass background box map used as arrow mapGive the script to the main lensGui.skin = Compassguiskin; var compassangle:float = transform.rotation.eulerangles.y;//Gets the y axis rotati

Some time ago has written an article about Compass, I believe that we have a certain understanding of the compass Since the most recent project involves site search and is based on the JPA annotation form and has been on the web for a long time, there are few examples of JPA integration compass, some of which are xml-based, and very few based on annotations, The

Step 1:Create a new project Compass and import a Compass image to the res/drawable-hdpi directory. Step 2:Design the application UI, main. xml Copy codeThe Code is as follows: Android: orientation = "vertical" Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: gravity = "center" > Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: src

Step1:Create a new project compass and import a compass picture into the res/drawable-hdpi directory Step2:UI interface for design applications, Main.xml Copy Code code as follows: android:orientation= "Vertical" Android:layout_width= "Fill_parent" android:layout_height= "Fill_parent" android:gravity= "Center" > Android:layout_width= "Wrap_content" android:layout_height= "Wrap