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2014/10/15 ¤U¤È 10:11:14

iphone Programming Glossary: magnetometer

Why am I getting 0 degrees from magneticField property the whole time?

http://stackoverflow.com/questions/11711646/why-am-i-getting-0-degrees-from-magneticfield-property-the-whole-time

time I'm trying to get the device's declination from the magnetic North in degrees by relying solely on the device's magnetometer. This is the code I've written but I just get 0 degrees.. What am I doing wrong CMMotionManager motionManager motionManager.. x 2.0 pow y 2.0 180.0 M_PI int degreesRounded int degrees NSLog @ Degrees i degreesRounded iphone objective c ios magnetometer share improve this question It is likely that the simulator doesn't return normal values for these methods so you will.. startDeviceMotionUpdates you should be using startMagnetometerUpdatesToQueue . The docs say this Magnetometer. Set the magnetometerUpdateInterval property to specify an update interval. Call the startMagnetometerUpdatesToQueue withHandler method passing..

Drifting yaw angle after moving fast

http://stackoverflow.com/questions/13613239/drifting-yaw-angle-after-moving-fast

yet stumbled upon it. I suspect it might has to do with the redesigned Core Motion API. Starting with version 5 the magnetometer compass is considered for sensor fusion as well. Console shows that bias estimations from locationd are provided to CoreMotion.. 1.749323 1.828088 variance 0.002644 0.004651 0.002527 temperature 31.554688 My question s Is there chance to block magnetometer readings when using Device Motion I tried deactivating location services but it doesn't affect Core Motion. If not possible..

Apple Devices with magnetometer?

http://stackoverflow.com/questions/4227272/apple-devices-with-magnetometer

Devices with magnetometer Which apple mobile devices have a magnetometer I thought that the iPod touch had one but I think I am mistaken. Do all.. Devices with magnetometer Which apple mobile devices have a magnetometer I thought that the iPod touch had one but I think I am mistaken. Do all devices with GPS have a magnetometer Do all devices.. have a magnetometer I thought that the iPod touch had one but I think I am mistaken. Do all devices with GPS have a magnetometer Do all devices with a magnetometer have a GPS iphone ipad ipod touch ipod share improve this question The iPhone 3GS..