Posted by buntoo
is there any flash file or some java application for K850i which can be used as a speedometer (to measure speed of the moving vechile) by using its built-in accelerometer data???
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K850i,K810i & 
W800i
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Nokia 6100,
K700i, K750i, K810i, K850i[ This Message was edited by: buntoo on 2008-04-29 19:41 ]
Posted by tranced
dont you mean accelerometer?
give a look here: k850 accelerometer
Posted by buntoo
No i mean utilization of accelerometer as a speedometer.
i've a flash file that displays the amount of acceleration but i'm looking for some kind of application or flash that could display speed (like in a car-speedometer.)
Posted by jcwhite_uk
He means a speedometer. The accelorometer can not be used to measure speed. For that you GPS.
Posted by buntoo
I know that accelerometer is used for measuring acceleration and not the speed. But if u know the acceleration, u can get velocity & then the speed by taking time-derivative of the acceleration. But u'll have to calculate the time-interval manually. So i'm asking about something that could do it automatically i.e.taking accelerometer data & the time interval and then displaying the velocity or speed.
Posted by buntoo
does anybody know...?
Posted by xironghostx
Yes, you are able to measure the speed with a accelerometer. But i havent gfound any java app doing that.
Posted by Prom1
On 2008-04-29 21:14:44, jcwhite_uk wrote:
He means a speedometer. The accelorometer can not be used to measure speed. For that you GPS.
Then how does the w580i with the Tracker (v1.6.20) app able to do this without GPS ?? Hmm. Unfortunately the Tracker app currently available for download from the SE Fun Site is the new one requiring GPS to work correctly. I know because I've tried it on my K850i.
[ This Message was edited by: Prom1 on 2008-04-30 14:49 ]
Posted by buntoo
yes the new tracker application requries a GPS accessory.
any other way?
sight!!! no one seems to be interested in
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I
K850i,K810i & W800i
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Nokia 6100,
K700i, K750i, K810i, K850i[ This Message was edited by: buntoo on 2008-04-30 21:27 ]
Posted by harry20larry
There is no possible way to work out speed from your acceleraometer, location services are providied using triangulation.
An acceleromter is a metal ball in sphere, that has a metal plate on each quatile, when the metal hits on of the quatiles it conducts electricty thus the phone knows it orientation.
Posted by buntoo
then how does it work on W580i?
Posted by goldenface
To measure speed by accelerometer alone would be hugely inaccurate as you would need to take into account changes of direction and moving uphill etc. It just wouldn't be worth having.
The accelerometer measures rates of change of velocity and thats all.
GPS would be much more accurate, although it is possible to locate a phone by measuring the distance between three phone masts....but still not very accurate.
Posted by xironghostx
Well, The accelerometer measures the acceleration. And if you know the time and the amount of the acceleration during that time you can get the velocity.
m/s^2 * s = m/s
I cant see the hard part about it, but maybe the accelerometer isnt that accurate.
Posted by buntoo
Yes i know that.. but if we do that all manually then no chance of getting even approximate value. The following file displays the acceleration produced in the handset
Acceleration Meter
so i think it is possible to make some kinda application that could measure the approximate speed.
Posted by br@dley
Does the phone use the pedometer and a user entered parameter of stride length to work out distance/speed when walking/jogging?
Posted by buntoo
No
Posted by AkuKL
On 2008-04-29 20:40:40, buntoo wrote:
is there any flash file or some java application for K850i which can be used as a speedometer (to measure speed of the moving vechile) by using its built-in accelerometer data???
I don't think it will work. At best it will give you a very, very inaccurate reading.