magnetometer

Can anyone tell me whether gravity sensor is as a tilt sensor to improve heading accuracy?

由 给你一囗甜甜゛ 提交于 2019-12-11 18:55:06
问题 X and Y axis of magnetometer can be used to calculate the heading of north when phone is level to the local ground. But when rolling or pitching the phone, we should use roll and pitch degree to eliminate the tilt error. Now, I want to know whether the gravity sensor is used as tilt sensor to get the roll and pitch to help improve the accuracy of heading to the north? 回答1: Here I describe how to get the orientation of the device with respect to the horizontal plane and the magnetic North. It

Arduino Sensor 10DOF MPU9255 cannot fetch magnetometer data

由 时间秒杀一切 提交于 2019-12-11 11:59:31
问题 I'm using a 10 DOF IMU with an MPU9255 and a BMP180 to collect orientation data. When I run a sketch for arduino that I downloaded to test the IMU's capabilities, it collects the data from the accelerometer and gyroscope elements perfectly, but is stuck with requesting the data from the magnetometer, which it never receives. It reads the magnetometer data succesfully once, but then can never read it again unless I re-upload the program. More specifically, the bitwise and never evaluates to

How to check for a device/browser that fully supports the deviceorientation event?

由 懵懂的女人 提交于 2019-12-11 07:44:34
问题 I have a HTML5 compass that works quite ok. Now I need a smart way to distinguish between "pseudo deviceorientation enabled" browsers (as desktop chrome and FF) and real candidates like iPhone/Android/iPad Browsers that use the device's magnetometor. My current solution is a basic check for the DeviceOrientationEvent and touch support: if (window.DeviceOrientationEvent && 'ontouchstart' in window) { // setup real compass thing, with event.alpha } else { // setup some mouse following hack } Is

How to adequatly replace Sensor.TYPE_ORIENTATION (which is now deprecated)?

由 我怕爱的太早我们不能终老 提交于 2019-12-10 14:55:05
问题 I've tried several code snippets found on the internet in SensorManager.getOrientation() - related discussions. None give magnetic azimuth reliably, as Sensor.TYPE_ORIENTATION did. Could anyone share a working code for Sensor.TYPE_ORIENTATION emulation? 来源： https://stackoverflow.com/questions/15109073/how-to-adequatly-replace-sensor-type-orientation-which-is-now-deprecated

Android: Magnetometer data deviates

由 时光怂恿深爱的人放手 提交于 2019-12-08 06:11:39
问题 I am trying to estimate heading from the accelerometer, gyro and magnetometer data. I have implemented A Complementary Filter from here. What I am trying is that I am holding the phone in my hand and I walked 15 steps in a straight line and I am trying to estimate Euler angles as given in the link above. But when I plot the raw data, I observe that the magnetometer data deviates. Here are the images of raw sensor data. My question is: how do I estimate Euler angles so that they indicate I am

How to get magnetometer data using swift?

由 谁说胖子不能爱 提交于 2019-12-06 05:54:29
问题 I am trying to get the magnetic field data from my iphone 6 by using CoreMotion. I had no problems accessing the raw data with the following code: if available { motionMangager.magnetometerUpdateInterval = updateInterval motionMangager.startMagnetometerUpdatesToQueue(queue, withHandler: { (data, error: NSError!) -> Void in println("x: \(data.magneticField.x), y: \(data.magneticField.y), z: \(data.magneticField.z)") }) } BUT: I need the derived data by using an device motion instance. So I did

Magnet script for UNITY 3D

由 回眸只為那壹抹淺笑 提交于 2019-12-04 17:24:59
I'm working on a Google Cardboard project, right now i have a demo for Android where u can look around in a special scene i build in UNITY 3D, everything is working fine & looking good, but what I really want is: I want to walk forward when I press the Google Cardboard magnet button. I found a few script's on the web, but I do not know exactly how to make these scripts work in my UNITY project. Can anybody help me further with this? Assuming you are able to read the magnet input correctly. This is how I did an FPS style controller script: In Unity5 import the asset package Standard Assets

How to build a compass with the iPhone?

由 点点圈 提交于 2019-12-04 07:17:50
After some searching on Google, I ask myself: Is it possible to build a compass (simple showing the heading/direction) with the iPhone 3G's GPS sensor? I have the suspicion, that this is only possible, if the device is moving. Any ideas are appreciated. Yes, you are right, that's the only way. Although I think once you know the direction, you could track small movements of the phone from acceleration sensors and draw the direction accurately even if the original movement stops. Note: This is outdated info, it was correct up until 3Gs came out. Unfortunately I can't delete accepted answer so

How to calculate Heading using Gyro and magnetometer

由 强颜欢笑 提交于 2019-12-03 16:14:58
I have raw data of Gyroscope and magnetometer. on basis of this data, i have to calculate Heading information with an accuracy of 1Deg. I would like to know, is there any algorithm which can help me to get heading info using available information with mentioned accuracy? Any article or any link also will be helpful. Thanks I am assuming you are using phone to collect gyroscope+magnetometer data. You cannot calculate Heading with Gyro+Magnetometer unless you know initial state of device. You have to try Accelerometer+Magnetometer . You can get heading values from rotation-matrix' or yaw`

How to calculate Heading using Gyro and magnetometer

由 空扰寡人 提交于 2019-12-03 13:46:38
问题 I have raw data of Gyroscope and magnetometer. on basis of this data, i have to calculate Heading information with an accuracy of 1Deg. I would like to know, is there any algorithm which can help me to get heading info using available information with mentioned accuracy? Any article or any link also will be helpful. Thanks 回答1: I am assuming you are using phone to collect gyroscope+magnetometer data. You cannot calculate Heading with Gyro+Magnetometer unless you know initial state of device.
订阅 magnetometer