Why not connect D2 thru a resistor to the camera shutter input?

http://arduino.cc/forum/index.php/topic,89159.30.html
http://arduino.cc/forum/index.php/topic,85335.45.html

I have done much work with Steppers and Canon and Magic Lantern.  It is trivial to trigger the shutter or start video recording.  You can use a 12v supply with a 5v motor, in fact it is preferred.  So long as you turn off the power between steps to keep it cool.  More questions?

Check out my Stepper Library.

Thanks for mentioning my Stepper library!  Can't wait to see how your project turns out.  Will you post a video when it is working?

I have hooked the T2i shutter directly to an Arduino pin thru a 1k resistor.

It wasn't suicide!

http://www.naturalnews.com/038650_Aaron_Swartz_suicide_assassination.html

Thanks for clearing that up!  It was a rhetorical question...

Wishful advertising.  Don't believe everything you read?

This is scalable and efficient without Government Subsidies. In contrast to Photovoltaic solar and wind power. Why haven't we heard of this in the news???

http://www.ted.com/talks/donald_sadoway_the_missing_link_to_renewable_energy.html

Bummer that Quadram doesn't work with Uno...

Has anyone had any success at making their own code to control attitude using pressure?

What if it could also do vertical tracking? 
Who would use it then?
Which sports?

His is not very accurate when <200m away.
What if I could make it work up close?
Would this be valuable?
Which sports?

If you can help me I appreciate it.  Thanks for your time.

You won't get close enough with a magnetic compass and accellerometer alone.  You need to move back and forth to maximize the signal or find it at least.

After learning more I can see there is only 1 GPS and no magnetic compass.
What if it could also do vertical tracking?  
Who would use it then?
Which sports?

His is not very accurate when <200m away.
What if I could make it work up close? 
Would this be valuable?

Off topic a little.  You might see where I'm going. 
How accurately could I measure distance apart by measuring the time of a radio signal?
The PPS pin of GPS has only 10ns jitter.  I figure I can measure about 30-300m distance precision with only a TX and RX.
Going one way that is, not round trip.

You can calibrate your internal clock using GPS within minutes of effort.  Once you adjust the frequency in software it is very accurate until you make a significant change in temperature.

Where are you located?  Want someone to work remotely?  Message me here.
http://www.freelancer.com/u/SBright33.html