gyroscope

问题 I never really understand the applications of the gyroscope on the iPhone/iPad, does it serve the similar function as the accelerometer but like an improvement to the accelerometer? What is the practical use of it? 回答1: "An accelerometer is a direct measurement of orientation, while a gyro is a measurement of the time rate of change of orientation." (1) By combing the output of the two sensors, called sensor fusion, one can determine the orientation of the device precisely and fast. If you

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed last year . Hidiho Community, I have this issue that when I open an aframe-webpage with my Android phone that the camera (or the scene) turns 180 degrees. I use the normal Aframe example https://aframe.io/examples/showcase/helloworld/ but it still happens some ideas how to fix that? I already tried setting the camera rotation

问题 I'm trying to build an application which does a desired affect when the device is tilted to a certain degree. I've taken a look at, and successfully enabled, an accelerometer, but this doesn't give me the desired affect. Like I said, I wish the device to do what I want it to, only when the device has achieved a certain degree, say 90 degrees. I've got the following code, but this only works when the device is tilted fast enough: @Override public void onSensorChanged(SensorEvent sensorEvent) {

问题 I have an iPhone with gyroscope. Let's say I have a quaternion of the phone rotation Q. I want to show points on screen relative of the world absolute coordinates. So with every rotation of my phone this points will be "still" in the real 3d space (sort of augmented reality). Let's say it is 4 points forming a rectangle. So I have created 4 points in 3d space relative to my phone screen and apply the transformation of Q to each of it. I thought it should be very simple but my points get

问题 So I have written a program in C to print values of 3 axis gyro at a very high data rate. The values are instantaneous values of angular speed that rise on movement and fall if the device is still. I need it to hold the high values and come back to zero when returned to position. If I integrate the values over a fixed sample time, would I achieve this? How do I go about integrating? I am a beginner in C programming. Thank you 回答1: Angular velocity is: ω = Δφ/Δt = (φ n − φ n−1 )/(t n − t n−1 )

问题 In Android I can get the device yaw, roll and pitch using a GAME_ROTATION_VECTOR sensor. I need to do the same thing in Flutter, but I haven't been able to find anything but the sensors package, which only gives access to accelerometer & gyroscope sensors. What can I do? Do I need to calculate the orientation myself from the accelerometer and gyro? 回答1: Don't know if this is still relevant, as the question wasn't closed, but for those seeking the answer... there is now a Flutter Sensors

问题 OK I don't think this question has been asked and its time either I get an answer quicker or I will add the answer once I have it as I must be close. Let me explain: Considering iOS device pitch and roll (forget yaw) we have the angles being as this * r+ * ------------ * | | * p- ° |p+ * | | * ------------ * r- So based on the body reference frame. We know that when either pitch or roll is 0 the other is the max inclination of the device. But when the device has inclination in both roll and

问题 I'm using Unity to make a game that uses the Gyroscope. I am trying to detect the rotation of the device around the axis that goes through the screen, I'm assuming it's the Z-axis in Unity Space. I tried using Input.gyro.attitude.eulerAngles.z but it doesn't stay constant when tilting the device around the other axes, I want it to stay constant so that only the "Z-axis" determines the rotation of a car's steering wheel, for example. How can I implement this? EDIT: I tried doing something else

问题 So I have a bit of a project I am trying to do. I am trying to get the devices rotation relative to gravity, and translation from where it started. So basically getting "tracking" data for the device. I plan to basically apply this by making a 3d pt that will mimic the data I record from the device later on. Anyway to attempt to achieve this I thought it would be best to work with scene kit that way I can see things in 3 dimensions just like the data I am trying to record. Right now I have

问题 I am working on an application to draw in the air with an android phone. As my phone is moving, thanks to the acceletometer, i retrieve the acceleration on each axis ax, ay, az. What I am interested in is: x,y,z. From what I read in forums and in some tutorials, integrating the accelaration twice gives huge errors. So what is the best solution for me to get information on the deplacement of the phone? Thanks for your help. 回答1: Not exactly what you are looking for: Store orientation to an