I am now beginning an app which will use the compass and tilt sensors to determine a persons heading and line of sight. Can I assume the sensors on devices such as the G1 are fairly accurate or can I expect to run into problems such as the compass being 5-10 degress off etc?
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If I wanted to create an app that manipulates, reads the data of, or controls an external electronic device, what coding or technologies are involved in this? some apps control an toy RC plane in the room.
View 1 Replies View RelatedI lost the electronic user guide on my X10. The tutorial does not open. Now it launches the browser at the following URL www.sonyericsson.com/cws/support/
How to restore access to the electronic user guide?
A simple question: How do I register for multiple sensors? I just switched from registerListener(SensorListener listener, int sensors, int rate), which is deprecated, to registerListener(SensorEventListener listener, Sensor sensor, int rate). Previously, I could use " | " to indicate multiple sensors, but now " | " is undefined, so how?
View 4 Replies View RelatedI'm programming an Augmented Reality application. It's development it's in an advanced state but I can't place the icons on the screen so still as anothers programs does (Layar, in example). This is because of the continuous variations of the sensors. I've tried the three modes of the sensors (FAST, GAME, and NORMAL) but I only get them to move more or less fast. The shivering is the same at different speed.
Finally I thougth I could reach my goal with a digital filter, averaging historical values. But again the icons continues moving, specially the most far placed ones (in the z axis). Please, could some one help me with some clue?
Last night i have downloaded Dolphin to play Wii Games. As you can imagine, play with the mouse is not as comfortable to emulate Wiiremote.
My idea is basically:
Control WII emulator with Android Sensors (As accelerometer, gyroscope, inclinometer) like Wiimote does
It seems to be quite interesting, I think that may be connectable by wifi and bluetooth with receiver (pc).
We are supposed to make UI actions only from the main UI thread. But it is not clear to me if callbacks like LocationUpdateListener (and other callbacks from sensors) are already in the UI thread or they require special care to access the UI components.
View 2 Replies View RelatedI am looking for a way to get sensors' data ( especially Accelerometer) directly without using Listener approach. Actually I need to have the data really fast! I can not find any way to read sensor data by myself. Anybody knows anything about it? Is it possible to read data with more than 50Hz?
View 9 Replies View RelatedI have following code:
CODE:...........
Code is working but here goes my problem: when I call it from main activity in this way:
CODE:........
Then i can see 10 times result of 'doing sth else!!!' and when loop is over i can see then result from activity. So sensor activity waits for some reason and then when main activity has nothing to do, sensors are doing their job.
of course I have well implemented: onActivityResult(int requestCode, int resultCode, Intent intent)
I want to read sensord data directly, not using listeners, is it possible?
Anyone know if it's possible to obtain the physical height or altitude of your device, using the sensors or by any other means?
View 4 Replies View RelatedThe accelerometer turns off when the screen is off. I'm guessing this is a bug but I haven't seen it logged. Am I missing something?
Perhaps the power management features need some improvement - the ability to specify what components are needed during a partial_wake_lock so that power can be conserved as efficiently as possible.
BTW, there is a bug logged noting that onSensorChanged() continues to be called for the orientation sensor (during sleep) but the values are not being updated.
I can't seem to find this info on the droids temperature sensor (the one available in the SDK):
Does it indicate ambient temperature or is it the temperature of the phone or chip?
Also, does the pressure sensor indicate atmospheric pressure?
I am having a difficult time figuring out a way to read the sensor data from a home screen widget. I can successfully create a home screen widget that extends AppWidgetProvider. I can successfully create a stand-alone application that reads sensor data (extends Activity). What seems to be impossble (for me) is combining them into a home screen widget that reads sensor data. The classes that you have to use, like SensorManager, SensorListener all seem to require an Activity which the AppWidgetProdiver doesnt have. I have also tried keeping my sensor data reader in a separate class that extends Activity and then instantiating that class in my widget. Makes sense in my head but no data is ever read from the sensors.
View 6 Replies View RelatedIs it possible?
View 3 Replies View RelatedAfter porting ICS, derived sensors are not working.when i browse through SensorService code, i found that in ICS derived sensor data is computed only if accelerometer, magnetometer and gyro are present.I dont have gyro in my device. Is this the reason for failure?
View 1 Replies View RelatedHow to make the following phone's magnetic and orientation sensor working? Both of these sensors are not working on my phone (verified by many apps such as Z-deviceTest, AndroSensor and Android Sensor Box).
Various applications have shown that this phone has 5 sensors :
- yamaha530 Orientation Sensor : 0.25 mA by Aichi Steel
- yamaha530 3-axis Magnetic Field Sensor :0.25 mA by Aichi Steel
- bma222 3-axis Accelerometer : 0.13 mA by The Android Open Source Project
- tmd2771 Proximity Sensor : 0.13 mA by Capella
- tmd2771 Light Sensor : 0.13 mA by Capella
Phone name : Clone Samsung Galaxy III S9300
Manufacturer : alps
Model: e1901_v77_jbl1_9p017
CPU: MTK6577 Dual Core 1.0GHz
Android version : 4.1.1
Baseband version : MAUI.11AMD.W12.22.SP.V15,2012/10/08 20:09
Kernel version : 3.4.0 (root @ abc-desktop) #1 SMP PREEMPT Mon Nov 12 18:32:14 CST 2012
Build Number : e1901_v77_jbl1_9p017_20121105
Perhaps there is new ROM or kernal that can handle the sensors better?
How much accurate are the coordinates received by the GPS antenna in the reality?I'm using the emulator but it doesn't work well with coordinates too much close is there nobody that have tested an application based on the package "Location" in a real device(I don't have a real one yet..) and knows how to answer me?
View 7 Replies View RelatedWith my location listener i get accuracy values about 30-100 m (being on an open field without annoying houses around me disturbing the gps signal). Why is that so bad? I thought you could get an accuracy about 3m with gps. And the Google maps applet for example has a much better accuracy. How can i improve the accuracy? I'm using the default gps provider. I saw you can create a Criteria object to get the best provider, but there are only the gps and the mobile phone net providers anyway - so it's some kind of senseless to get the location provider that way. is there no way to define the needed accuracy?
View 6 Replies View RelatedMy app has an issue where many players get bounced all over kingdom come when using GPS to get a signal. I had this issue with my G1 on occasion but not on my Nexus One. I am talking hundreds of miles from their real location. I changed the code to throw out anything that was not at least 500 meters accurate. My question is, if the location placement is hundreds of miles off, how reliable will the accuracy reporting be? Does it realize that it could be hundreds of miles off?
I am asking the community because I cannot reproduce the scenario with what I currently have so I can't test if my fix is meaningful. Does GPS know when its readings are that far off?
wanted to know that the accuracy value returned by the getAccuracy() is of which type radial accuracy or horizontal accuracy.
View 8 Replies View RelatedIf I do Location.getAccuracy() I get a number of meters. Is that number a radius or a diameter? I thought it would be a radius, but Google's MyLocationOverlay uses that value as a diameter.
View 4 Replies View RelatedI'm writing a mapping application. In simple terms, it sends some info about the user's current location to a server when the user clicks on a button. I need the location to be absolutely correct, and when I first started to implement LocationListener, I found that it often wasn't. So I've used location.getAccuracy() to check the GPS accuracy, and warn the user - without submitting the data - if the location isn't accurate enough. Code...
View 3 Replies View RelatedIm working on an app that use gps My testing devices are Nexus One and Htc Mytouch 3g Slide
So does anyone know how to improve the gps accuracy?
I am developing a website which used W3C GeoLocation API to obtain users' position. I try to run the website in Android Emulator and use DDMS / geo fix to send the coordinate to the device. However the coordinate received is inaccurate.
For example, (22.377127, 114.095535) will become (22.370335, 114.08523353). I try to run some Android GPS example from Internet, and the results is just the same. I can certainly say that this is not my program bug. From my observation, it seems like some rounding problem.
I'm having a weird problem with GPS accuracy. Basically, I check the GPS accuracy in a background thread after the user clicks a report button, and show the accuracy in a progress dialog, changing second by second. (Code is below.) The following strange thing happens:
1. If the user clicks more or less immediately on the button after taking the phone out, accuracy is unsurprisingly pretty poor to start off with, say more than 100m. But the accuracy never really improves very much while the user is running the background thread. There is some improvement, but it's slow and it never gets very accurate. 2. However, if the user gets the phone out and then waits for several seconds *without* clicking on the button and running the background thread, and *then* clicks on the button, the accuracy quickly improves and becomes very good. When they click on the button, the accuracy shows up as fine - within the same length of time............
I am curious about the accuracy of the motorola droid GPS, before installing a golf app. Can these units pinpoint to within a few yards or is the area fairly wide.
View 4 Replies View RelatedHas anyone else noticed how far off google navigator is? I have used it a couple times and one time it was almost a mile off from the actual location I wanted to go to. Or am I doing something wrong?
View 13 Replies View RelatedWife and i use latitude gps to track each other. however the accuracy is not very good. It can show she is 2 miles from where she actually is. is there a tweek or another program to help make it more accurate?
View 4 Replies View RelatedWe are writing an application that uses acceleration sensor data to plot phone's movement in 3D. We are finding gross inconsistencies in the actual data output by the sensor. Also, sampling rates vary greatly from 8 to 200 millis. (using System.currentTimeMillis())
Specifically, when we try to draw a circle with G1 flat on the table all the time (filtering out gravity accel 9.8), most of the time we would get a plot of phone's position that is not a circle at all. Lots of times, it would be close to a straight line. Sometimes, it would start drawing an arc, but would not close the circle shooting off in a random direction.
We tried to eliminate the time variable, by substituting a constant time sampling rate (10 millis) to calculate phones position, but the result was very close to what we had before (shapewise). Also, the acceleration in Z direction when the phone is displaced lying flat on a table (XY plane) varies too by +/- 2 units which is a lot.
I do not think it is an error in our code, as we have checked it many times. If there were an error indeed and the accelerometer worked properly, we would see a consistently wrong depiction of the phone's movement. Unfortunately, repeating the same movement (circle) would produce sometimes wildly differently shaped plots.
It all comes down to us wanting to know if that is indeed the case that the G1 accelerometer is very unreliable and inconsistent device when used for more or less precise measurements? Is there some documentation/facts paper that would tell us just how reliable accelerometer is?
I thought I have read somewhere that the accuracy of Android's GPS is about 10cm?
Can anyone verify or correct this? Reason being is that my application I am trying to develop keeps track of locations an user has visited and it would help me out tremendously to know the margin of error I can expect?