AC3.3 TradHeli Release Discussion

WARNING to TradHeli users:

Do not attempt to fly AC3.3 until you hear otherwise from me.  I have not even bench tested it yet, let alone test flown it.  There are quite a lot of changes that have gone in that could be crash-o-matic for helicopters.

AC3.3 release for Tradheli is likely to be delayed.

This post will serve as the official release progress thread for TradHeli.

Warning: DO NOT FLY RC6!  It has a critical bug that will likely end in a crash.

Warning for RC5:

RATE_YAW_FILT_HZ param will change defaults from 5Hz to 20Hz to be more suitable for helicopters.  If you have never changed this parameter from 5 before, then it will automatically update the value to 20 without warning.  This much faster filter will probably require reduction in your P and D terms, and the yaw may oscillate badly.  Be prepared to retune these.  As a safety measure, probably cut them in half for your first take-off.

Warning #2 for RC5:

I accidentally broke the Landing Detector.  It will probably never trigger.  You should land in Stabilize mode, or be prepared to shut down the motor as soon as it touches the ground in Alt_Hold, Loiter, Auto, etc.

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  • Developer

    We are moving support for the Trad heli to the new forum http://discuss.ardupilot.org/c/arducopter/traditional-helicopter

    I encourage you to post over there

  • Might be even more useful if unarmed it sets low, but armed it does passthrough from Tx - then could be used for gov/elec motor control.

    Rob_Lefebvre said:

    Hi Steve, I actually added an official kill switch function for 3.3.  Actually, it's called Motor Run Enable.  It's just another Aux Servo Output function.  You can slave it to any output.  It simply sets PWM at min for that channel when disarmed, and then max when armed.  I think this should be sufficient to trigger an ignition system?

  • Excellent info! Just setting up my first 3.3.3 in a TRex500 so I'll be trying your params.

    I notice there are apparently 3 versions of 3.3.3 here:

    http://firmware.ardupilot.org/Copter/stable/PX4-heli/

    v1, v2, v4What difference between these?

    As long as I'm in question mode, what is PX4-heli-hil??

    ArduPilot firmware : /Copter/stable/PX4-heli
  • Happy Days! I've solved the problem. Mission Planner has a minimum Throttle_Accel_P at 0.5 and in the extended parameter screen it won't let you input a value below this number. I set Chan 6 from 0 to 0.5 and found the best setting to be about 0.3. I've set Throttle_Accel_I to 0.6 and Throttle_Accel_D to 0.001 and all is now well in AltHold and Loiter.

    For traditional helis, someone needs to change the minimum setting if possible.

  • It's the althold parameters. I'm running fixed rpm and use collective to maintain altitude so I'm not sure if its a "power" parameter or I need to change something to do with pitch. Here is another log file.

    3 24-Sep-16 3-54-02 PM.bin

  • I'm struggling to get my Logo 400 to fly in Alt Hold without it bouncing up and down. What am I doing wrong? Log file attached.

    Thanks in anticipation.

    2016-09-24 13-04-30.tlog

  • The payload goes up front.  There's actually a nadir mount camera installed in this view, but it is shrouded. The payload if very flexible.  Very easy to integrate almost anything you want.

  • Hi Rob,

      Very impressive. Looks like an electric heli. However I do not see much space for payload. But perhaps it is an earlier prototype. Can't wait to see the final product.

  • Hi Anthony,

    I'm still around, but unfortunately don't have time to do community support or much development work.  I've been busy developing a helicopter I will be selling soon.  This may lead to more development work in the future.

    3702266433?profile=original

  • Developer

    Anthony, let me answer your questions:

    >>>Is the code still being maintained?

    Very much so. Development is more active now with more commits and more companies involved than ever before. Please see https://github.com/ArduPilot/ardupilot

    >>>Now that 3DR have gone of to bigger and better (?) things are we still able to rely on this community for advice and information?

    You can get your questions answered on DIYDrones and several other sites, but the official forums are now located here  http://discuss.ardupilot.org/

    >>>Where do we buy hardware, cables and the llike?

    There are many stores selling hardware. We have some listed here http://ardupilot.org/plane/docs/common-stores.html

    >>> but the manuals seem to have stopped being updated?

    The manuals are also constantly being updated. Please look here. https://github.com/ArduPilot/ardupilot_wiki

    >>>This was the leading hardware/software platform for personal UAVs but I fear that commercialization may have got the better of open source. Is this true or am I just being paranoid?

    This still is the leading platform and commercial activity is driving its growth.

    >>>And is Rob_Lefebvre still part of the community? We need his genius to help us all keep flying.

    Yes, Rob is still active and still around

    ArduPilot/ardupilot
    ArduPlane, ArduCopter, ArduRover source. Contribute to ArduPilot/ardupilot development by creating an account on GitHub.
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