gyroscope

Is there any application that is available which I can try out to see the difference between using an accelerometer and gyroscope (where the lag is evident while using an accelerometer). I get the theoretical aspect of using a gyroscope over an accelerometer. But I would like to see it visually. Ali Well, not an app but in this video , starting from 21:55, there is a demo. 来源： https://stackoverflow.com/questions/7383012/android-accelerometer-and-gyroscope

I am trying to work with 3D rotations but I don't seem to get the idea how the framework does the calculations. For example I get this data: yaw -1.010544 pitch 0.508249 roll 1.128918 Then I print the corresponding rotation matrix 0.599901 -0.128495 -0.789689 0.740043 0.464230 0.486649 0.304065 -0.876344 0.373584 After reading the API and the wiki, I am pretty sure there must be a general way to create a rotationmatrix out of euler angles. I tried all of these here , no results. Do I miss something, or how is this done? Well, iOS or CoreMotion provides both. RotationMatrix and Euler Angle

I'm trying to use HTML5 deviceOrientation events in Javascript to rotate an image when the user rotate his iPhone around him. I use this code to detect when the gyroscope is moving : window.addEventListener('deviceorientation', function (e) { alpha = e.alpha; beta = e.beta; gamma = e.gamma; }, true); It really works well on iPhone 4+ and iPad 2, but there's no gyroscope on the 3GS (and older iPhones). That's why I'm testing the deviceOrientationSupport like this : if(window.DeviceOrientationEvent){ // gyroscope support alert('DeviceOrientationEvent support OK'); } else { alert(

I am well aware of the existence of this question but mine will differ. I also know that there could be significant errors with this approach but I want to understand the configuration also theoretically. I have some basic questions which I find hard to answer for myself clearly. There is a lot of information about accelerometers and gyroscopes but I still haven't found an explanation "from first principles" of some basic properties. So I have a plate sensor that contains an accelerometer and gyroscope. There is also a magnetometer which I skip for now. The accelerometer gives information in

I'm getting pitch and roll data from my device's gyroscope using this tutorial: http://www.thousand-thoughts.com/2012/03/android-sensor-fusion-tutorial/ All the readings are extremely accurate (there's a filter applied to the code in the tutorial to eliminate gyro drift). Unfortunately, the code only works when my device is placed flat on a surface that is parallel to the ground. The most ideal position for my app to work would be with the top of the device pointing straight up (ie, the device is perpendicular to the ground with the screen facing the user). Whenever I orient my device in this