Thread: Discussion Japanes Ball Drone.
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Old Nov 02, 2012, 02:15 AM
tim2chia88 is offline
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Joined Sep 2012
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update from singapore

hi guys. just to share, we have gotten rid of the APM control board and all the v tail mixes and have moved on to use the KK2 board V1.2 from Hobby king.

advantages are:
no need for any additional mixes (save cost and weight)
simple on screen LCD programming (no need to lug laptop around)
8 outputs which are completely customizable to allow for custom mixing
has an inbuilt single copter mode setting
has linkable pitch and roll PI setting function (since pitch and roll are symmetrical)

Initial results (after tonnes of PI permutations) show rather good stability. we can smack it side to side, spin it by hand around the z axis and fly it into a wall and it will stick to it until an opposite command is input.

Version 3 has an AUW 550 grams, 42 cm diameter and 1047 SF prop. CG approximately center of the sphere. it flew pretty well without the spoilers in hovering flight but was erratic in higher speed forward flight. with the spoilers on, it feels to fly better when in higher speed forward flight and still has good hovering capability.

BUT it did not perform so well in mild wind outdoors due to its large frontal area. it can stabilize and hover but kept drifting with the wind. it was pretty intense trying to fight the wind : /

videos to come

thanks to Sam and Kelly for their help!
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