what about using the accelerometer as a step counter? it could detect the number of steps and turns. or in a car, it might even might be easier. that would work as long as the iphone isnt being moved. so link it together with the techniques above! greetz!
Tom
· 2 years ago
It's an interesting idea, but...
What you're talking about is essentially dead-reckoning using an inertial navigation system, like those used in spacecraft and submarines... These systems require all sorts of crazy gyroscopes and accelerometers, and the iPhone's simple 3-axis accelerometer is no where near suitable for that kind of thing. Just check out the Wikipedia page to get an idea of how complex they can be: http://en.wikipedia.org/wiki/Inertialguidan...>
I tried to do a basic inertial nav system for the iPhone accelerometer mouse I was working on, and it's just not accurate enough and too difficult to do without gyros (at least as far as I could tell from the few hours I spent experimenting).
The much simpler version is a basic pedometer, which someone has already implemented for the iPhone (although I haven't tried it)
shelby
· 2 years ago
<p>Navizon.com is already doing this. Of course you have to jailbreak your iPhone to get it installed, but it works pretty well.
actor79
· 1 year ago
Is there any literature out there that describes exactly how the iPhone does the positioning?
smokeonit
· 1 year ago
any progess on the bluetooth stack for the iphone???
i would love to be able to use my tomtom bluetooth GPS mouse with iphone osX 2.0, to be able to do live tracking in areas without WPS-coverage ("wifi postioning system") skyhookwireless does the WPS for google/apple
Tom
· 1 year ago
Nope, I've been busy with other things. Since iPhone 2.0 has GPS now there's not much reason to continue pursuing this stuff.
Though it would be nice to be able to use Bluetooth mice and keyboards with the iPhone.
free fta satellite keys
· 1 year ago
Has read with the pleasure, very interesting post, write still, good luck to you!
All Comments
what about using the accelerometer as a step counter? it could detect the number of steps and turns. or in a car, it might even might be easier. that would work as long as the iphone isnt being moved. so link it together with the techniques above!
greetz!
It's an interesting idea, but...
What you're talking about is essentially dead-reckoning using an inertial navigation system, like those used in spacecraft and submarines... These systems require all sorts of crazy gyroscopes and accelerometers, and the iPhone's simple 3-axis accelerometer is no where near suitable for that kind of thing. Just check out the Wikipedia page to get an idea of how complex they can be: http://en.wikipedia.org/wiki/Inertialguidan...>
I tried to do a basic inertial nav system for the iPhone accelerometer mouse I was working on, and it's just not accurate enough and too difficult to do without gyros (at least as far as I could tell from the few hours I spent experimenting).
The much simpler version is a basic pedometer, which someone has already implemented for the iPhone (although I haven't tried it)
Is there any literature out there that describes exactly how the iPhone does the positioning?
any progess on the bluetooth stack for the iphone???
i would love to be able to use my tomtom bluetooth GPS mouse with iphone osX 2.0, to be able to do live tracking in areas without WPS-coverage ("wifi postioning system") skyhookwireless does the WPS for google/apple
Nope, I've been busy with other things. Since iPhone 2.0 has GPS now there's not much reason to continue pursuing this stuff.
Though it would be nice to be able to use Bluetooth mice and keyboards with the iPhone.