accelerometer

I wish to get the acceleration vector of an Android phone. The problem is, the accelerometer coordinates are relative to the phone's rotation. What I want is the "absolute" acceleration, i.e., it should return the same values whichever way the phone is facing. (I want to detect if a user that is skiing is sliding down a slope without using GPS. I also need to be able to differentiate sliding and going up the chairlift.) I can probably get those values by combining the accelerometer with the gyroscope, but I have no idea how I could offset the accelerometer's values with the gyroscope's. Is

I want to implement an indoor localisation system using the sensors of a mobile device (accelerometer, compass, gyro) . This problem was already discussed here on several places such as - here and here The first step is to decide which platform is the best one to implement such a system. The main possibilities are Samsung's Galaxy/ Galaxy tab, or the iphone/ ipad. The most important criteria is the accuracy of the sensors data. However, This comparison is very complicated, as the accuracy is dependent not only on the device itself but also on the software layers above it. Is there any research

I am currently working with Android Sensor API and accelerometer data. Though the internal components should support high acceleration (even +-16g), I tried some recent smartphone and found that the maximum range of exposed data is usually +-2g (e.g. Nexus 5) and sometimes +-4g (e.g. Nexus 4). Is there any way to set the full scale of the sensor? (I didn't manage to find a public API for this) Alternatively, is there any flagship smartphone that support higher range from stock? (e.g. +-8g, +-16g). I'm facing the same problem as yours. DISCLAIMER: I just discovered what I'm writing, so I haven

I have to collect accelerometer data from my Android phone, so I have made a little program to do that. After some tests, I have found that my Nexus S accelerometer's rate is always 50 values per second when the phone is active, and 6 values per second when it is asleep (with a PARTIAL_WAKE_LOCK ), whatever the rate I ask for ( NORMAL , UI , GAME or FASTEST ). So I decided to install an application found on the Internet which tests the rate of the accelerometer : http://samoht.fr/tuto/accelerometers-frequency-on-android-with-code But I got the same "error" : whatever the rate I ask for, it is

I want to be able to make image move realistically with the accelerometer controlling it, like any labyrinth game. Below shows what I have so far but it seems very jittery and isnt realistic at all. The ball images seems to never be able to stop and does lots of jittery movements around everywhere. - (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration { deviceTilt.x = 0.01 * deviceTilt.x + (1.0 - 0.01) * acceleration.x; deviceTilt.y = 0.01 * deviceTilt.y + (1.0 - 0.01) * acceleration.y; } -(void)onTimer { ballImage.center = CGPointMake(ballImage

I am using LG Optimus 2x smartphone(Gyroscope and Accelerometer sensor) for positioning. I want to get correct rotation angles from gyroscope that can be used later on for body to earth coordinate transformation. My question is that How I can measure and remove the drift in gyro sensor. The one way is to take the average of gyro samples (when mobile is in static condition) for some time and subtracting from current sample, which is not good way. When the mobile is in rotation/motion how to get the drift free angles? As far as I know, either the Kalman filter or something similar is implemented

I am starting with an Activity based off of this ShakeActivity and I want to write some unit tests for it. I have written some small unit tests for Android activities before but I'm not sure where to start here. I want to feed the accelerometer some different values and test how the activity responds to it. For now I'm keeping it simple and just updating a private int counter variable and a TextView when a "shake" event happens. So my question largely boils down to this: How can I send fake data to the accelerometer from a unit test? Corey Sunwold My solution to this ended up way simpler then