accelerometer

I wish to calculate position of a small remote controlled car (relative to starting position). The car moves on a flat surface for example: a room floor. Now, I am using an accelerometer and a gyroscope. To be precise this board --> http://www.sparkfun.com/products/9623 As a first step I just took the accelerometer data in x and y axes (since car moves on a surface) and double integrated the data to get position. The formulae I used were: vel_new = vel_old + ( acc_old + ( (acc_new - acc_old ) / 2.0 ) ) * SAMPLING_TIME; pos_new = pos_old + ( vel_old + ( (vel_new - vel_old ) / 2.0 ) ) * SAMPLING

I want to be able to detect a situation where the phone has an acceleration towards the ground (probably means that the Gravity sensor has to be used here also). I have read a lot about this topic in the Android docs, about High and Low pass filters and other posts, and right now what I have is a code sample that gets the acceleration in the X, Y and Z axis after stripping the gravity: if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) { final float alpha = (float) 0.8; gravity[0] = alpha * gravity[0] + (1 - alpha) * event.values[0]; gravity[1] = alpha * gravity[1] + (1 - alpha) * event

I'm a beginner in Android game Development, and I developing a small Game. I am facing some difficulties with the Motion Sensor: Accelerometer. this game is in Landscape mode. I want if my phone tilts in right, my character also goes right. ( same thing for left ) And when I stop tilting Character in the game should stop moving. But i don't understand really good the operation of the accelerometer, here is my code: @Override public void onSensorChanged(SensorEvent event) { synchronized (this) { long penchement = (long) (event.values[1]- 0.5); if(penchement>0){ if(penchement>lastUpdate)

I am writing an app that logs the accelerations of the mobile phone every 40ms (at 25Hz). This frame rate can be held on average, but sometimes I am experiencing delays of 5'000ms - 50'000ms between timeframes. I am wondering why this happens. Here you have a graph of the delays where you can see that they occur quite often: Here's what I am doing (which might be bad): The activity points to a accelerometer logger class (singleton, pure java, no android class extensions). The accelerometer logger singleton continues to log in the background. The accelerometer logger saves every log directly to

I've written a method to send UDP messages over the network.It's working properly. After that, i tried to use the Accelerometer Sensor of my Galaxy S smartphone.I get the accelerometer values, show them in the screen. And when the values are changed(onSensorChanged method) , i send them using UDP to the application on my computer. The problem is that the program sends the sensor values always, not when they are changed. So, the onSensorChanged method is running always. I put my phone on the desk, the values are constant in the screen but it continues to send. How can i fix this ?

I'm developing an android app in which I need to show location updates with some 30-40 updates per second. I'm using the Location APIs of Google Play Services , introduced in Google I/O 2013. It uses a fused location provider (making use of accelerometers and other sensors along with GPS) for more accurate & efficient location tracking. Here's my code: protected void startLocationTracking() { if (GooglePlayServicesUtil.isGooglePlayServicesAvailable(this)) { mLocationClient = new LocationClient(this, mConnectionCallbacks, mConnectionFailedListener); mLocationClient.connect(); } } private

I am testing the accelerometer code in Unity3D 4.3. What I want to do is simple change the object angle while tilting the ipad, to fake view angle like real live. Everything works fine except for the fact that the accelerometer is a bit too sensitive and I can see the GameObject is like of flickering even I put it on table. How can I make it less sensitive so that even when you hold with your hand the angle will change according to the tilt and the object remain steady? Here are my code: void Update () { Vector3 dir = Vector3.zero; dir.x = Mathf.Round(Input.acceleration.x * 1000.0f) / 1000.0f;