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Jan 21, 2013, 07:30 PM
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AR Drone notes

Looking at the videos of the AR Drone 2.0,

Parrot AR.Drone 2.0 Demo 2013 International CES Las Vegas 1-8-13 (3 min 5 sec)

they've taken the time honored system of downward facing optical flow & sonar to new levels. Multicolored squares on the floor not only allow it to localize to an absolute position, but do it precisely enough to reproduce vicon performance.

The cameras are undoubtedly fast, over 60fps, & high resolution. There's no english information on the sensors, just about replacing them. If you want to know how it works, learn chinese.

They probably get some position information from the accelerometer, but Arducopter only gets position information from the accelerometer at 2Hz.

The floor patterns for localization wouldn't work in the apartment, since there's no empty floor space.

Tethered copters

Are harder than you think. The 5ft cable it would take to make a Blade MCX tethered has 1ohm of resistance. It would need 5V to run the motor at 4V, but have to drop to 4V as soon as the motor stopped. So a truly useful tether needs a current shunt resistor & a very fast, variable power supply to make sure the voltage at the copter is always 4V. The ground voltage could be 4V-30V, depending on cable length & current.
Last edited by Jack Crossfire; Jan 21, 2013 at 08:00 PM.
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Jan 21, 2013, 11:52 PM
I review RC Products
GBLynden's Avatar
That is awesome!
Jan 22, 2013, 01:17 AM
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Blusky1's Avatar
Great Video You should see the ones the USA government has they fly in swarms =)

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