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DJI Naza H

Discussion in 'Helicopters' started by Pelagic Pilot, Aug 21, 2012.

  1. GPBill

    GPBill Registered

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    Don't think so.  ;D

    I rather hated removing the wiring I had done for the HV servos. I remember doing a lot of research and head scratching to get it set up to run them off the 2 cell lipo flight pack.
    The BEC that is now being installed is rated 5.8 or 7.4V switchable so I've set it at the high end. That's more than the Futaba RX is rated for but after more research this morning, I don't think it will be an issue.
  2. GPS

    GPS Registered

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    I hear you there.  How many times have you wired up some model really sweet only to need to add or change a part that requires a re-wire.  :mad:
  3. GPBill

    GPBill Registered

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    Out with the old and in with the new.
    Second photo is the new BEC, third shows the LED module and controller location, then the GPS unit.

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
  4. Pelagic Pilot

    Pelagic Pilot Registered

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    That is looking good.
  5. GPBill

    GPBill Registered

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    Thanks.
    I've got the DJI driver and assistant loaded and that went well. Took a little time to look through the setup process. Some of it looks easy enough and a few parts have me scratching my head again. I'll look a little harder at it tomorrow.

    Edit:  Look what I've just found.  :)

    https://www.youtube.com/watch?v=r9AjbnyBCVA

    https://www.youtube.com/watch?v=_N9KJEtcNMI
  6. GPS

    GPS Registered

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    I don't know Bill.  If the weather up there is like down here you might have to test hover this baby in the house.  You better wait until the Mrs. goes shopping though.

    It is really looking very nice!
  7. GPBill

    GPBill Registered

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    Well poo. I was going along nicely with the programing until it came time to setup fail-safes. I guess I need an 8 channel RX even though I'll be only using 7.  ???
    I did read on the DJI site that 8 was required, the quick start guide shows using only 7 channels used so I thought I would get away with what have.
  8. GPS

    GPS Registered

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    I don't know what kind of fail safe you are trying to program.  If you mean fail safe as in signal lost I cannot help you.  If I am not mistaken you are using a Futaba radio, is that correct?

    I am using a Spektrum DX7SE.  On my radio I can force a DJI fail safe with a spare two position switch.
  9. GPBill

    GPBill Registered

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    Right, I'm using Futaba.
    Yes, for lost signal. My radio was set in the 7 channel mode which let me go through the DJI programing up to setting fail safes.
    When I enter the fail safe page in my TX the only channel to work with is channel 3.
    When the TX is set in the 8 channel mode, all the channels in the fail safe page are available to edit. Seems odd but that's how it seems to be. 
  10. GPS

    GPS Registered

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    I only know the Futaba surface radio 4PK so I can't help you with your air radio.  I don't even know what you mean by switching from seven to eight channel mode means.  What model radio do you have?
  11. GPBill

    GPBill Registered

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    8FG updated to the super.
    Same TX they are using in the setup videos.
  12. Pelagic Pilot

    Pelagic Pilot Registered

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    Ok, so now I am confused, the 8FG is a 14 channel radio?
  13. GPBill

    GPBill Registered

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    Yes. when I bought mine it was 8FG but about 6 months or so later they offered a downloadable up grade along with the new model.
    What they sell now is the 8FG super.

    http://www.futaba-rc.com/systems/futk8010.html

    I have a new 8 channel RX ordered so hopefully I can get this finished up and flying early next week.
  14. Pelagic Pilot

    Pelagic Pilot Registered

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    Oh, it's the Rx that is the problem, I thought you could not use the Tx for some reason.
  15. GPBill

    GPBill Registered

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    Yep, the receiver needs to be 8 channel though you only use 7.

    The issue is failsafe settings. With the RX in the 7 channel mode it appears you only have channel 3 for a fail safe setting. In the 8 channel mode you have the option of using any channel. The DJI software set up requires that channel 7 be use as the failsafe.

    The RX has a page where you set up a new model. On that page you need to specify 7 or below channels or 8 and above. Don't know how all that works but if it is set for 8+ in the TX it will not work with a 7 or less RX.
  16. GPBill

    GPBill Registered

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    The new RX came in today's mail, it's installed and the setup is finished.
    Just need a little fair weather to take her out back and see if it all works.
  17. GPS

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    Is the sun shining up there Bill?
  18. GPBill

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    No.  :(
    Now I have two models on the flight line waiting some better weather.
  19. GPBill

    GPBill Registered

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    Now that this install of the NAZA-H is finished, all but the test flying, I'll pass on a couple things that were not perfectly clear in the setup. At least to me.  ::)

    Early on in the mechanical installation, the NAZA quick start guide has you plug your ESC into one side of the micro controller and if you are going to use one, the BEC into the other side. I had used BEC's on other models in the past and when doing so, there generally were always instructions to disable the + wire on the ESC. There was no hint of doing this when using the NAZA BEC, but yes, according to one of the techs where I purchased the unit, disable the positive wire.

    The second issue had to do with pitch and throttle curves. The NAZA setup software has a place to set your pitch curves for FBL heli's. If you are using a fly-bared one they have you skip this section. Unfortunately they don't mention to just setup the heli as you normally would through the TX. I spent a long day reading every thing I could find to see what I was supposed to do. Finally posed the question on one of the NAZA-H threads over on Helifreak and got that answered.
  20. GPBill

    GPBill Registered

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    I've learned a couple more things along the way to a test flight.

    First thing is, I found I had overlooked the the 11 to 52 volt input voltage requirement of the NAZA BEC. My 2 cell flight pack will was not up to that.  ::)  Not a big issue, I have a small 3 cell pack that isn't much bigger and just over an ounce and a half heavier.

    Second, I couldn't keep the heli from spooling up the moment I flipped the throttle hold. Something I overlooked again. I hadn't reset the ESC end points when creating a new model in the TX. Another senior moment and it took most of today to sort it out.  :p

    If I can get a break between showers we may get the flight in tomorrow.

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