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Jan 17, 2013, 06:00 AM
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The widowmaker


That there is the widowmaker, a very special prototype with some changes that were unlikely to work but ended up making it super stable. Manely, tapping the Blade MCX's integrated gyro to drastically improve the heading detection without increasing the component count.

Its heading is extremely stable, probably allowing its position tracking to be more stable than using the magnetometer alone. The improvement costs nothing, but would require more parts on copters with no analog gyro already installed.

Another discovery with this system was pointing it 45' left of the cameras during calibration seems to be the optimum alignment for the cyclic phasing. It may be specific to this copter or it may apply to all of them. Even though the Blade MCX is over 4 years old, it seems to continue experiencing subtle design changes, maybe even cyclic phasing changes in the firmware.
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