accelerometer

How do I use the Android Accelerometer?

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Start with this: public class yourActivity extends Activity implements SensorEventListener{ private SensorManager sensorManager; double ax,ay,az; // these are the acceleration in x,y and z axis @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); sensorManager=(SensorManager) getSystemService(SENSOR_SERVICE); sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL); } @Override public void onAccuracyChanged(Sensor arg0, int arg1) { } @Override public void onSensorChanged(SensorEvent event) { if … Read more

Android TYPE_LINEAR_ACCELERATION sensor – what does it show?

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Very interesting question!!!! I’m developing somethig similar to your application. What i found about TYPE_LINEAR_ACCELERATION isn’t happy for me. 1) TYPE_LINEAR_ACCELERATION, TYPE_GRAVITY, ecc are implemented only for Android 2.3 (and up) So i have Android 2.2 and i can’t test them. 2) TYPE_LINEAR_ACCELERATION isn’t so accurate as it would be, because there are some simple … Read more

how to calculate exact foot step count using accelerometer in android?

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The first thing you need to do is decide on an algorithm. As far as I know there are roughly speaking three ways to detect steps using accelerometers that are described in the literature: Use the Pythagorean theorem to calculate the magnitude of the acceleration vector of each sample from the accelerometer. Low-pass filter the … Read more

How to get iPhones current orientation?

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This is most likely what you want: UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation]; You can then use system macros like: if (UIInterfaceOrientationIsPortrait(interfaceOrientation)) { } If you want the device orientation use: UIDeviceOrientation deviceOrientation = [[UIDevice currentDevice] orientation]; This includes enumerations like UIDeviceOrientationFaceUp and UIDeviceOrientationFaceDown

How can i simulate accelerometer in android emulator? [closed]

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The Android emulator doesn’t support it itself but OpenIntents’ SensorSimulator fills the void. Download and unpack the zip file, then start the standalone jar file: $ java -jar bin/sensorsimulator.jar Next, install SensorSimulatorSettings on the emulator using the adb tool which comes with the SDK: $ adb -s <emulator device> install bin/SensorSimulatorSettings.apk (run adb devices to find the … Read more

Detect change in orientation using javascript

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NOTE: orientationChange is deprecated Instead use screen.orientation using the screenOrientation interface which is triggered by the screenorientation.onchange event window.addEventListener(“DOMContentLoaded”, () => { const output = document.getElementById(“o9n”); const displayOrientation = () => { const screenOrientation = screen.orientation.type; output.innerHTML = `The orientation of the screen is: ${screenOrientation}`; if (screenOrientation === “landscape-primary”) { console.log(“That looks good.”); } else … Read more

Gyroscope vs Accelerometer?

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Actually, the accelerometer measures linear acceleration; but since force is equal to mass times acceleration, people can consider it as measuring force as well as long as it has a constant mass. Linear acceleration is the rate of change of linear velocity. A gyro on the other hand provides the angular rotational velocity measurement as … Read more

How is it possible that Google Fit app measures number of steps all the time without draining battery?

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Thanks for asking this question! Battery is one of our top most concerns and we work hard to optimize Google Fit’s battery usage and provide a magical experience. Google Fit uses a mix of sensors(Accelerometer, Step counter, Significant Motion counter), Machine Learning and heuristics to get the data right. Our algorithm is pretty similar to … Read more

How can I find distance traveled with a gyroscope and accelerometer?

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Basic calculus behind this problem is in the expression (and similar expressions for displacements in y and z) and basic geometry is the Pythagorean theorem So, once you have your accelerometer signals passed through a low-pass filter and binned in time with sampling interval dt, you can find the displacement in x as (pardon my … Read more