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Title: KK Single Copter Post by: jaspreet.guitar on December 11, 2012, 10:52:56 PM Hello! Last week I started with a new project using the KK 2.0 board. ;D
It's a Single Copter which basically has one brushless motor for thrust and four servos for the control. I hand made the frame out of light weight wood. Attached everything else mostly with double sided tape, glue gun and zip ties. The specs are as following: 4x HXT900 servos 1x GT2215/09 BL motor 1x Turnigy 2200 mAh battery KK2.0 LCD FC 2X Turnigy Plush 30A ESC I've not faced much issues with the lift-off. It easily takes off at around 50-60% throttle. Controlling the thing is, however, a difficult job. As compared to a quad copter (the only other RC thing that I have worked on), tuning the Single Copter is much more difficult. :banghead: Suggestions by the experienced RCI members to improve the design or any recommendations for the tuning are most welcome! ;D Title: Re: KK Single Copter Post by: jaspreet.guitar on December 11, 2012, 10:56:16 PM Another photo
Title: Re: KK Single Copter Post by: rajathv8 on December 11, 2012, 11:16:54 PM Why have you used two ESC's? :)
The cardboard pieces attached to the servos may may flex, thus providing inconsistent directional control. How is the servo attached to the cardboard? A pic may help :) All the best with this build. It is unique :) Title: Re: KK Single Copter Post by: jaspreet.guitar on December 11, 2012, 11:31:14 PM I'm using a 11x4.7 prop with the GT2215/09. So it's slightly over-propped. My 30A Plush ESC gets warm with this motor+prop combination.
So I used a seperate ESC to provide power to the FC, receiver and the four servos. :P I'll soon replace the cardboard with coroplast. I basically built the thing with whatever was lying at home! :giggle: I joined the servo to the cardboard using a glue gun. The idea itself seemed to be a bit stupid to me at first but surprisingly the whole thing came out to be pretty sturdy! I'll post a close up in a while! :) Took inspiration from here: http://www.youtube.com/watch?v=pJzXUAibRo4 Title: Re: KK Single Copter Post by: sajid6300shaikh on December 12, 2012, 11:54:09 AM And is it balanced on yaw axis.?
Because I don't see any flaps to control yaw axis. Title: Re: KK Single Copter Post by: girishsarwal on December 12, 2012, 12:23:42 PM sweet thing!
Title: Re: KK Single Copter Post by: jaspreet.guitar on December 12, 2012, 02:14:00 PM @sajid6300shaikh: Basically there are four flaps. Two pitch and two roll.
For P+ : Both pitch flaps move back. For P- : Both pitch flaps move forward. Similarly for Roll, both roll flaps move back/forward. When it comes to yaw, Yaw+ :One pitch flap forward and one backward, and one roll flap forward and one backward. For Yaw- the flaps just move in the opposite direction as compared to Yaw+. I'm not sure if my explanation makes a lot of sense! ??? :P I'll post a small video for the demonstration, maybe then it'll be clear! ;D Title: Re: KK Single Copter Post by: jaspreet.guitar on December 12, 2012, 02:16:41 PM @girishsarwal: Thank you good sir, the credits all Kaptein KUK's! :bow: ;D
Title: Re: KK Single Copter Post by: atulrajguru9 on December 12, 2012, 02:47:09 PM Amazing build!!
Do you think that if you reduce the area of center plate then it will give more thrust? Title: Re: KK Single Copter Post by: sajid6300shaikh on December 12, 2012, 06:03:48 PM As expected..
But then what if there's an imbalance on both pitch axis and yaw axis simultaneously or roll axis and yaw axis simultaneously. |