gyroscope

问题 I am building an Android game and I want to figure out whether the user tilts the device to the left or the right (Similar to how Temple Run works when you move the man from side to side). I have read many tutorials and examples and I made sample applications but the amount of data I get back from both the Gyroscope and the Accelerometer are overwhelming. Would I need both sets of hardware to work out whether the user tilts the device and in which direction? My current application is

问题 I am building an Android game and I want to figure out whether the user tilts the device to the left or the right (Similar to how Temple Run works when you move the man from side to side). I have read many tutorials and examples and I made sample applications but the amount of data I get back from both the Gyroscope and the Accelerometer are overwhelming. Would I need both sets of hardware to work out whether the user tilts the device and in which direction? My current application is

问题 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

问题 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

问题 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

问题 I'm newbie in sensor and IMU so my question is probably very basic for others, but it's already puzzled me for days. I'm using Mahony's algorithm to calculate Euler angle of my device; the three angles looks correct when put the device static or move/rotate the device slowly; however, the Yaw angle will become unstable and incorrect if rotating the device fast. Could someone help me solve this issue ? My device uses MPU-9150, I use the 6 parameters method of Mahony algorithm, that is to say,

问题 I got this error, and how can I solve this error? When I run the app it crashes. It gives that error, Can anyone help? Thanks in advance. The error is at the line: let initialAttitude = manager.deviceMotion!.attitude // get magnitude of vector via Pythagorean theorem func magnitudeFromAttitude(attitude: CMAttitude) -> Double { return sqrt(pow(attitude.roll, 2) + pow(attitude.yaw, 2) + pow(attitude.pitch, 2)) } // initial configuration let initialAttitude = manager.deviceMotion!.attitude /

问题 I would like to embed a 360 youtube video into a web page and then allow the user to 'look around' by affecting which direction of the video is displayed based on the phone's gyroscope. Does Youtube provide an API for this level of control in the browser? (See here for an example of a 360 youtube video: https://www.youtube.com/watch?v=gQEyezu7G20) 回答1: The YouTube IFrame API (API for embedding a YouTube video into a webpage) doesn't currently allow for controlling pan/tilt of 360 degree

问题 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 )

问题 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