Pixhawk beeping after arming

I have researched myself to death on this one and cannot find a solid answer. I am thinking it is due to the GPS not having acquired its position fully, but here is what I am facing. 

I power up the Pixhawk and let it go through initialization. I arm the Pixhawk and then arm via radio. My radio is setup to always startup in Loiter mode. When I do this, I get a loud beep...beep...beep...beep that does not stop unless I disarm or go to Stabilize mode. The copter will arm but it continues to give me this noise. I have a blue "breathing" LED until I arm at which time I get the green. 

Any knowledge that can be shared about this is greatly welcomed! 

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    • T3

      Ken, I'm a bit confused on what mode you want to replace with what.  Stabilize mode is usually the best for taking manual control, but requires some skill on the throttle.  Alt hold is almost as safe, since the alt hold behavior has gotten really good.  The iris doesn't have stabilize on the controller, its most basic mode is still alt hold.  I think you could get away with that.  The Iris has a 3pos switch for alt hold, loiter, auto.  And a 2 pos switch to engage rtl.  If all you have is a 3pos, I think that alto hold, loiter, rtl would be a good bet for you.

    • Well... for me, since all I'm used to is a Phantom, I wanted this build to be somewhat like that. I'm not a good enough pilot yet to have full manual control. I did a flight with this build and could barely control it. And being it was 3D printed, the quad itself is a little delicate. So I was pretty much looking to stay away from full manual for now, but I hear/read a lot about modes you should/shouldn't be in, especially at take off. The mode I don't want to change is RTL, so I'll leave it at #3. I'll keep Loiter at #2, and switch to Alt Hold for #1/takeoff.

      I hope that made sense... lol... and thanks for the help.

    • That is the wrong approach.

      A Pixhawk is not now, never was, and never shall be a NAZA.  You need to learn how to fly in Stabilize, and don't even think about using a GPS mode until you can.

    • I learned how to fly on a Syma. I can fly that every way you want because it only has one mode. :)  

    • I have an X5C-1, and try to fly it as much as I can. I guess with this build I'm just a little over-cautious because I actually built it, it wasn't store-bought or ready to fly, if that makes sense. I didn't want to see that hard work crash into the ground. I am also building a racing quad, so that should get me to let go of "self-flying" modes... lol... and I have a couple of palm-sized quads as well...

    • I was wondering about that too. I loaded the setup files for my Taranis and Pixhawk from Peter at Drone Shop. I am guessing he gives plenty of time for everything to align before takeoff. 

    • If you don't mind me asking... why do you not recommend taking off in a GPS flight mode? I am not disagreeing, I just want to know why/why not. Still learning....

    • I would HIGHLY recommend learning to fly on the sticks before you do anything else! Learning to fly is so much fun and it will seriously help you later on. I know of first and second hand experience where something went wrong and the pilot was unable to save themselves because they only knew how to fly on GPS assisted modes. 

      For example: guy could fly outside. Went inside and crashed into the wall because he was totally disoriented.

      Learn to fly patterns with the craft facing away, towards, right, left, etc. You will seriously save your wallet from major damage! :)

      Once you've got some experience, here's a good way to scare yourself, but learn how to fly: in alt hold / loiter mode go up about 100 feet. Note where your throttle is physically set. Now switch into stable mode. There's a good chance the set throttle won't be able to sustain flight and your craft will begin its crash sequence (remember: every landing is a controlled crash - keep that in mind). You will learn quickly how to correct for throttle imbalance coming in and out of auto modes.

      Coming from the 250 world, I set my throttle rates much higher. The default settings are sluggish and designed for smooth operation and long battery life.  

    • What Tony said.

      Besides, Murphy's Law has not been repealed.

    • I dont understand why we would even ask that question. Why you should not take off in loiter when you are new and are having issues? Because when in that flight mode there are more possibilities that something will and can go wrong... 

      Its even stated in the manuals. Make sure you fly well in stabilize, then alt hold, then loiter then RTL...i thought this was common sense when building a new copter..

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