How to use arduino and stepper motors to follow a bluetooth device

Hi Everyone I'm working on a project and I'm not sure where to start or even if its possible so I thought I'd run it by you guys and get your feedback.

I want to use an arduino to track my mobile phone (cell). I'm playing with an idea of an active tripod that will follow my phone around. Kind of a robotic camera man. I want the arduino to use some type of triangulation or gps location to locate my and follow my phone by moving stepper motors on the tripod.

I hope I made that clear but any help would be greatly appreciated and ideas you may thank might work better than the approach I was thinking of.

Thanks.

You need positions, range and direction. I think you are expecting too much of Bluetooth. Maybe GPS, perhaps plural, but you will be far better employed thinking of something more useful.

Hi Nick, when you say say more useful, can you explain a little more, what you had in mind?

Thanks

Virtually anything that does not involve fartarsing around with Bluetooth in the manner you propose. Look around you, this is the place to find it. You might start in the robot forum, as I understand that is where your interest might lie. You will find plenty of support there.

I've never heard of any directional antennas for bluetooth, but it must be able to construct one. Then rotate this antenna to detect in which direction your phone is. Do that for a second antenna a bit apart, and the triangulation gives you the distance.

Would look pretty cool as well, those two rotating antennas.

Google 2.4 ghz antenna. Look at the images. You will need an antenna with a large reflector at the back to avoid finding reflections. Then look for or design a method to rotate the antenna, but know the direction it is pointing.

Paul

GPS location will work, if outside. Expect the location error to be +/- 3 meters at best.

If you know the tripod GPS coordinates, it is simple to calculate the bearing to another set of GPS coordinates.