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2014/10/15 ¤U¤È 10:03:29
iphone Programming Glossary: accelerometerHow do I detect when someone shakes an iPhone? http://stackoverflow.com/questions/150446/how-do-i-detect-when-someone-shakes-an-iphone it was waved vigorously about for a split second. Does anyone know how to detect this iphone ios accelerometer shake motion detection share improve this question In 3.0 there's now an easier way hook into the..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received I will hit the EXC_BAD_ACCESS signal. In this particular case it happened to be an error in the accelerometer code. It would not execute within the simulator which is why it did not throw any errors. However it..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare you are using yaw pitch and roll. Simply put don't and another reason not to . Can you use the accelerometer data instead An accelerometer is a direct measurement of orientation from the DCM manuscript and that.. roll. Simply put don't and another reason not to . Can you use the accelerometer data instead An accelerometer is a direct measurement of orientation from the DCM manuscript and that is what you need. And as for..
Need to find Distance using Gyro+Accelerometer http://stackoverflow.com/questions/6647314/need-to-find-distance-using-gyroaccelerometer GPS here. Can you help me here with some useful information or tutorial Thanks in advance. iphone accelerometer distance gyroscope share improve this question Basic calculus behind this problem is in the expression.. for displacements in y and z and basic geometry is the Pythagorean theorem So once you have your accelerometer signals passed through a low pass filter and binned in time with sampling interval dt you can find the..
http://stackoverflow.com/questions/706344/lock-unlock-events-iphone remains the same mach_time denom numer doesn't change ... However it seems Apple does turn off the accelerometer when the device is locked... Enable iPhone accelerometer while screen is locked tested iOS4.2 on iPhone.. However it seems Apple does turn off the accelerometer when the device is locked... Enable iPhone accelerometer while screen is locked tested iOS4.2 on iPhone 4 has this behavior Thus... In your application delegate.. UIApplication application NSLog @ STATUS Application will Resign Active Start checking the accelerometer while we are in the background UIAccelerometer sharedAccelerometer setDelegate self UIAccelerometer..
How do I detect when someone shakes an iPhone? http://stackoverflow.com/questions/150446/how-do-i-detect-when-someone-shakes-an-iphone I don't particularly care how they shake it just that it was waved vigorously about for a split second. Does anyone know how to detect this iphone ios accelerometer shake motion detection share improve this question In 3.0 there's now an easier way hook into the new motion events. The main trick is that you need to have..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received the instructions one at a time. As soon as I let it run again I will hit the EXC_BAD_ACCESS signal. In this particular case it happened to be an error in the accelerometer code. It would not execute within the simulator which is why it did not throw any errors. However it would execute once deployed to the device. Most of the answers..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare The above linked paper has further details too. I just noticed you are using yaw pitch and roll. Simply put don't and another reason not to . Can you use the accelerometer data instead An accelerometer is a direct measurement of orientation from the DCM manuscript and that is what you need. And as for tc's question does the orientation.. details too. I just noticed you are using yaw pitch and roll. Simply put don't and another reason not to . Can you use the accelerometer data instead An accelerometer is a direct measurement of orientation from the DCM manuscript and that is what you need. And as for tc's question does the orientation relative to North matter..
Need to find Distance using Gyro+Accelerometer http://stackoverflow.com/questions/6647314/need-to-find-distance-using-gyroaccelerometer not long distance using Gyro Accelerometer. No need for GPS here. Can you help me here with some useful information or tutorial Thanks in advance. iphone accelerometer distance gyroscope share improve this question Basic calculus behind this problem is in the expression and similar expressions for displacements in y and z.. this problem is in the expression and similar expressions for displacements in y and z and basic geometry is the Pythagorean theorem So once you have your accelerometer signals passed through a low pass filter and binned in time with sampling interval dt you can find the displacement in x as pardon my C... float dx 0.0f float vx..
http://stackoverflow.com/questions/706344/lock-unlock-events-iphone the screen is locked CPU speed doesn't report BUS speed remains the same mach_time denom numer doesn't change ... However it seems Apple does turn off the accelerometer when the device is locked... Enable iPhone accelerometer while screen is locked tested iOS4.2 on iPhone 4 has this behavior Thus... In your application delegate.. remains the same mach_time denom numer doesn't change ... However it seems Apple does turn off the accelerometer when the device is locked... Enable iPhone accelerometer while screen is locked tested iOS4.2 on iPhone 4 has this behavior Thus... In your application delegate void applicationWillResignActive UIApplication application.. In your application delegate void applicationWillResignActive UIApplication application NSLog @ STATUS Application will Resign Active Start checking the accelerometer while we are in the background UIAccelerometer sharedAccelerometer setDelegate self UIAccelerometer sharedAccelerometer setUpdateInterval 1 Ping every second _notActiveTimer..
How do I detect when someone shakes an iPhone? http://stackoverflow.com/questions/150446/how-do-i-detect-when-someone-shakes-an-iphone shake it just that it was waved vigorously about for a split second. Does anyone know how to detect this iphone ios accelerometer shake motion detection share improve this question In 3.0 there's now an easier way hook into the new motion events...
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received as I let it run again I will hit the EXC_BAD_ACCESS signal. In this particular case it happened to be an error in the accelerometer code. It would not execute within the simulator which is why it did not throw any errors. However it would execute once..
http://stackoverflow.com/questions/3562478/native-json-support-in-ios
http://stackoverflow.com/questions/5214197/simple-iphone-motion-detect iPhone motion detect I need to detect when the gyroscope accelerometer is activated a certain amount. Basically to detect when there is movement of the device. I don't know anything about Core.. handling and narrow signal processing on CMDeviceMotion.userAcceleration. This is because every rotation results in accelerometer signals as well. Create a CMDeviceMotionHandler as described in startDeviceMotionUpdatesToQueue withHandler Your CMDeviceMotionHandler..
iOS: Movement Precision in 3D Space http://stackoverflow.com/questions/5550453/ios-movement-precision-in-3d-space will move with their phones in any direction but only need to move a few feet. Is there any technique maybe with the accelerometer and gyroscope that would enable this degree of accuracy For example the user holds the phone flat so that the bottom of.. just give me a brief understanding if with some hard work this could even be possible. Thanks Derek iphone ios4 gps accelerometer gyroscope share improve this question No not really. If you integrate the accelerometer values twice you get position.. Derek iphone ios4 gps accelerometer gyroscope share improve this question No not really. If you integrate the accelerometer values twice you get position but the error is horrible. It is useless in practice. Here is an explanation why Google Tech..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare too. I just noticed you are using yaw pitch and roll. Simply put don't and another reason not to . Can you use the accelerometer data instead An accelerometer is a direct measurement of orientation from the DCM manuscript and that is what you need... using yaw pitch and roll. Simply put don't and another reason not to . Can you use the accelerometer data instead An accelerometer is a direct measurement of orientation from the DCM manuscript and that is what you need. And as for tc's question does..
Distance moved by Accelerometer http://stackoverflow.com/questions/6645126/distance-moved-by-accelerometer How can I do this Can I get algorithm for it Thank you. P.S I looked for a while and seems like it is possible using accelerometer. iphone xcode accelerometer distance share improve this question You get position by integrating the linear acceleration.. algorithm for it Thank you. P.S I looked for a while and seems like it is possible using accelerometer. iphone xcode accelerometer distance share improve this question You get position by integrating the linear acceleration twice but the error is.. in the video. Similar questions track small movements of iphone with no GPS What is the real world accuracy of phone accelerometers when used for positioning how to calculate phone's movement in the vertical direction from rest iOS Movement Precision..
Need to find Distance using Gyro+Accelerometer http://stackoverflow.com/questions/6647314/need-to-find-distance-using-gyroaccelerometer No need for GPS here. Can you help me here with some useful information or tutorial Thanks in advance. iphone accelerometer distance gyroscope share improve this question Basic calculus behind this problem is in the expression and similar expressions.. similar expressions for displacements in y and z and basic geometry is the Pythagorean theorem So once you have your accelerometer signals passed through a low pass filter and binned in time with sampling interval dt you can find the displacement in x..
http://stackoverflow.com/questions/706344/lock-unlock-events-iphone report BUS speed remains the same mach_time denom numer doesn't change ... However it seems Apple does turn off the accelerometer when the device is locked... Enable iPhone accelerometer while screen is locked tested iOS4.2 on iPhone 4 has this behavior.. doesn't change ... However it seems Apple does turn off the accelerometer when the device is locked... Enable iPhone accelerometer while screen is locked tested iOS4.2 on iPhone 4 has this behavior Thus... In your application delegate void applicationWillResignActive.. applicationWillResignActive UIApplication application NSLog @ STATUS Application will Resign Active Start checking the accelerometer while we are in the background UIAccelerometer sharedAccelerometer setDelegate self UIAccelerometer sharedAccelerometer..
Using accelerometer to calculate speeds http://stackoverflow.com/questions/10921395/using-accelerometer-to-calculate-speeds deceleration a driver exerts when exposed to certain prompts. I found this paper that has allot of useful information Accelerometer physics The problem is that we most likely will not have a calibration time to start at zero.. however it is assumed that..
Drifting yaw angle after moving fast http://stackoverflow.com/questions/13613239/drifting-yaw-angle-after-moving-fast deactivating location services but it doesn't affect Core Motion. If not possible what is the alternative workaround Accelerometer based gravity estimation PS As we are dealing with quaternion based models this is not related to Gimbal Lock EDIT After..
How to implement pedometer in iphone? http://stackoverflow.com/questions/1984003/how-to-implement-pedometer-in-iphone tasks your app will have to be open to collect pedometer data. The simplest way to do this would be to setup an Accelerometer listener and watch for 'step events'. You'd have to do some experimentation to determine the type and size range of these..
Detecting Acceleration in a car (iPhone Accelerometer) http://stackoverflow.com/questions/2733249/detecting-acceleration-in-a-car-iphone-accelerometer Acceleration in a car iPhone Accelerometer I am working on an iPhone app where we are trying to calculate the acceleration of a moving car. Similar apps have accomplished..
http://stackoverflow.com/questions/3089917/gyroscope-vs-accelerometer vs Accelerometer Now that iOS 4 is no longer NDA I would like to know what Gyroscope has to offer over the Accelerometer for developers... vs Accelerometer Now that iOS 4 is no longer NDA I would like to know what Gyroscope has to offer over the Accelerometer for developers. Is there a difference in APIs Other things iphone ios4 accelerometer gyroscope share improve this question..
Cocos2d iPhone: Rotate Sprite using Accelerometer http://stackoverflow.com/questions/3826304/cocos2d-iphone-rotate-sprite-using-accelerometer iPhone Rotate Sprite using Accelerometer I'm trying to rotate a sprite using the accelerometer. when I tilt right I want him to rotate slightly to the right and.. currentRawReading float calibrationOffset Also ensure that your h file has @interface myViewName UIViewController UIAccelerometerDelegate Then in your .m file just below your imports at the top put #define kFilteringFactor 0.05 CGFloat DegreesToRadians.. RadiansToDegrees CGFloat radians return radians 180 M_PI Then in your .m file on your viewDidLoad Function put UIAccelerometer accel UIAccelerometer sharedAccelerometer accel.delegate self accel.updateInterval 1.0f 60.0f also add the following function..
What is meant by .delegate=self? http://stackoverflow.com/questions/4211947/what-is-meant-by-delegate-self iphone delegates delegation share improve this question Delegates send messages to you. For example if you use the Accelerometer delegate you will get messages about the accelerometer. If you use the new neutrino detection delegate you will get messages.. bigTop UIViewController ASIHTTPRequestDelegate UIPopoverControllerDelegate @interface flying UIViewController UIAccelerometerDelegate You can see that 'bigTop' wants to use two delegates the ASIHTTPRequestDelegate and the UIPopoverControllerDelegate... use a dozen such delegates. In the example of flying above somewhere in the code for flying it would have to say UIAccelerometer sharedAccelerometer setDelegate self . Note that UIAccelerometer is a singleton. In the case of bigTop it would have to..
Retrieving Accelerometer Values? http://stackoverflow.com/questions/5659534/retrieving-accelerometer-values Accelerometer Values I want to retrieve the iPhone's accelerometer values and print them into a label. Any help is appreciated. iphone.. xcode accelerometer share improve this question Put this in viewDidLoad method of your ViewController which is UIAccelerometerDelegate UIAccelerometer accelerometer UIAccelerometer sharedAccelerometer accelerometer.updateInterval 1.0f 60.0f accelerometer.delegate.. share improve this question Put this in viewDidLoad method of your ViewController which is UIAccelerometerDelegate UIAccelerometer accelerometer UIAccelerometer sharedAccelerometer accelerometer.updateInterval 1.0f 60.0f accelerometer.delegate self Then..
Distance moved by Accelerometer http://stackoverflow.com/questions/6645126/distance-moved-by-accelerometer moved by Accelerometer I want to move objects on iPhone screen rectangle circle and so on by moving iPhone. For example I move iPhone along X.. how to calculate phone's movement in the vertical direction from rest iOS Movement Precision in 3D Space How to use Accelerometer to measure distance for Android Application Development Need to find Distance using Gyro Accelerometer share improve this..
Need to find Distance using Gyro+Accelerometer http://stackoverflow.com/questions/6647314/need-to-find-distance-using-gyroaccelerometer to find Distance using Gyro Accelerometer I want to build an app that calculates accurate Distance travelled by iPhone not long distance using Gyro Accelerometer... I want to build an app that calculates accurate Distance travelled by iPhone not long distance using Gyro Accelerometer. No need for GPS here. Can you help me here with some useful information or tutorial Thanks in advance. iphone accelerometer..
Accelerometer Low Pass Filtering http://stackoverflow.com/questions/6942626/accelerometer-low-pass-filtering Low Pass Filtering Still on the BigNerdRanch iOS Development book. In the Accelerometer chapter they first implement accelerometer.. Low Pass Filtering Still on the BigNerdRanch iOS Development book. In the Accelerometer chapter they first implement accelerometer tracking but it's fairly jumpy. They then suggest to apply a low pass filter.. fairly jumpy. They then suggest to apply a low pass filter to it by changing the original code void accelerometer UIAccelerometer accelerometer didAccelerate UIAcceleration acceleration HypnosisView hv HypnosisView self view hv setXShift 10.0 acceleration..
How to count steps using an Accelerometer? http://stackoverflow.com/questions/8310250/how-to-count-steps-using-an-accelerometer to count steps using an Accelerometer I have to develop the same functionality as of this Pedometer App I have observed this Pedometer app in very high detail... For example sometimes it detects 2 3 steps at the same time. And sometimes it works fine. My code In viewDidLoad UIAccelerometer sharedAccelerometer setUpdateInterval 0.2 void accelerometer UIAccelerometer accelerometer didAccelerate UIAcceleration.. it detects 2 3 steps at the same time. And sometimes it works fine. My code In viewDidLoad UIAccelerometer sharedAccelerometer setUpdateInterval 0.2 void accelerometer UIAccelerometer accelerometer didAccelerate UIAcceleration acceleration const float..
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