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    F550 What wieght are you flying with

    Mine is 3,2kg AUW. I have 2x5000mAh 4S. Standard DJI motors, Graupners 10x5, GoPro2. Flight time max 15min. You can see it here: https://picasaweb.google.com/108309496015374428003/Hexacopter?authuser=0&feat=directlink (quite old pictures - before changing Vtx antenna position and before...
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    F550 WKM drift

    I've foud a cause of strange behavior of my copter: video transmitter was jamming GPS signal.
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    DJI WKM Firmware 5.12 Update

    Another question is if during vertical part of calibration copter should be kept nose up, side up or it doesn't matter.
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    F550 WKM drift

    Do you think that playing with gains would solve my problem? May be I should seriously increase attitude gain (now I have default 100)? May be I have somehow damaged my IMU? The crash that initiated conversion of my F450 to F550 wasn't serious - my copter has fallen flat with motors working, but...
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    F550 WKM drift

    GPS module is on the longest carbon mast, so quite far away from noisy elements. That's my setup before installing EzOSD. https://picasaweb.google.com/lh/photo/FYpxIcbz1ldnCj6maNi_eG0Clu0rHm6Kb7vnGGNQpj4?feat=directlink
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    F550 WKM drift

    After crash I've rebuilt my F450 that was flying perfect to F550 in quite heavy version (AUW 3150g). After upgrading it to 5.06 had strange problems that caused two crashes (it was fliping right). I've alse replaced 6th motor and ESC because I didn't new if the problem was because of WK-M or...
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    DJI Service Bulletins

    Have you managed to receive it? I am also interested...
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    WKM in ATTI/GPS hovers for 2 minutes and nose dive.

    Ca 6 weeks ago I had similar crash: http://vimeo.com/43633734 (password: HexaCrash). Crash is at 2:18. I've bought it in the end of january 2012 and received it in february. It was flying without any problems on my F450. After a crash caused by my mistake (lipos out of juice) I've rebuilt it to...
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    DJI WKM Firmware 5.12 Update

    I use futaba 9CAP with EzUHF and it works perfect, so it may be problem between DX8 and EzUHF TX. In my Futaba you cannot reassign main channels so I am using default. No difference between PWM, PPM SUM and external PPM->S-Bus converter.
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    DJI WKM Firmware 5.12 Update

    What's a problem with EzUHF? I've upgraded my F550 with EzUHF, removed PPM->S-Bus converter and haven't noticed any problems with the receiver...
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    How to determine where is COG on Z-axis

    It will give you the same result despite of edge of base you chose. But in this method it is better to chose the edge that is farthest from predicted COG to achive better accuracy.
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    How to determine where is COG on Z-axis

    Your bethod is based on idea that when an obiect is suspended, so that it can swing freely, it will come to rest with its COG vertically below the point of suspension. My method is based on idea that obiect become unstable when its COG falls outside of the obiect's base. Both methods should...
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    How to determine where is COG on Z-axis

    I've just found quite simple method to detemine Z-axis position of COG: 1. Determine where is COG on X and Y axis. I think nobody has a problem to find it. 2. Tilt your copter on the edge of landing skids until you find a balance (copter doesn't tend to flip to right or left) 3. Make a picture...
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    ground loop?

    I am installing SBEC to power servos of my gimbal. There is a wiring diagram of such an installation on AeroXcraft website: http://www.aeroxcraft.com/images/p0005_05.jpg I just wonder if such a wiring doesn't create ground loop. Shoudn't I disconnect "0V" wire from BEC to GND wire of servo or...
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    WK-M GPS/Compass

    I know that, but I've seen a lot of FlameWheels flying with Compass/GPS mounted directly on arm or upper plate...
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    DJI 30A Esc getting really warm at 6 Ampere Hover

    What's your firmware version? My ESCs was warb on 5.06, but cold on 5.02.
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    WK-M GPS/Compass

    Is it a bad idea to mount GPS/compass of WK-M on upper plate of my F550 without a mast?
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    PH AV130 size

    I know that AV130's Internal space dimensions are 110 mm high x 132 mm wide. What are external dimensions?
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    configuration database

    I've corrected link.
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    configuration database

    I've seen nice database of configurations for Naza: https://docs.google.com/spreadsheet/ccc?key=0Au16aK6Q-0p0dENkdXVGVHJLRm5fRTFQdjBZbUhxZ3c#gid=0 There is also nice database about Mikrokopter: https://docs.google.com/spreadsheet/ccc?key=0ArfrElQnmjucdFFPX3dYZ1d1VnFyLXI2S1FLQUVaemc#gid=0 is...
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