Radio calibration page see's full right yaw input but pixhawk doesn't or barely responds. If somebody could look at this log I would really appreciate it.
AHH!!! it's a Pixhawk that the reason I don't recognize the dididah ; I always starts as Richard describes too and add that always take off in stab, then try Alt hold, then pos hold or Loiter, then, if all looks well, RTL and finally Auto. On one copter I pluged incorrectly one ESc and the copter try to flip during the first test
I have found it best to not start out in any mode that requires gps such as loiter. I almost always start out in alt hold.
One thing I do after setting up a new copter to confirm all is as it should be is arm it then hold on to it VERY carefully, with gloves and safety glasses, then just throttle it up enough so it feel's like it's lifting it's own weight. Then tilt it forward and sideways and you should feel it fighting that trying to keep it level. On one occasion it was opposite and most certainly would have been an instant crash. I had the props on wrong. You can also sort of notice if it vibrate more one way than the other and it's easy to narrow down which motor and prop is vibrating more than the rest. You can also use your TX and move the stick around to confirm it reacts as it should. Obviously you have to be very careful. I've had my son help me out with the TX stick so I can hold on with both hands.
If it continues to beep and not arm your probably your gonna need to re-do some or all of the mandatory set up including calibrating the esc's. At least that's been my experience. Let me know how it goes. Good luck!
Jim, perhaps it help if you can take a video doing didididah and if your issue is different than this one perhaps you have more help if you open another specific post ;) and is isefull too if you have a log too, better enable all
GREAAAAATTTTT!!!!!! , I had similar issue on my old cuad but the symptom was pulsate in loiter, only one arm little twisted, it's give me a long headhache UFF!!
Andy posted that it looked like RCIN rarely goes below 1500 yet APM P radio calibration page shows 892-2006. So it seems there is some issue with that not registering with the controller. Yet it shows on the radio calibration page so what the heck does that mean??!!
Andy Piper > Richard KennedyApril 29, 2015 at 2:21am
I've plotted the 4 rcout channels against ch4 rcin (should be yaw). Ch4 looks to be going as you intend, but two of the rcout channels are really low and two are really high. I'm not sure which is wrong, but I would guess you have a hardware problem with two of the motors/escs. The whole thing looks very unbalanced and your ErrYaw is all over the place.
It would seem that is what you would expect to see... two high and two low because to yaw to the right it would spin motors 1 and 2 faster than 3 and 4. So if that's what the output is yet it's barely yawing right then it must be a mechanical issue as you suggest. Interesting to note that motors 1 and 2 are noticeably warmer than 3 and 4 and my flight time seem reduced. It would also stand to reason it's the all in one esc because that is the most difficult thing of all to get at..... being as I'm a firm beleiver murphy never takes a day off!
Andy Piper > Richard KennedyApril 29, 2015 at 4:52am
Well no, you yawed right AND left in the flight? You can clearly see that in RCIN4, but its always the same motors which are high/low (which is not what you would expect to see).
Replies
AHH!!! it's a Pixhawk that the reason I don't recognize the dididah ; I always starts as Richard describes too and add that always take off in stab, then try Alt hold, then pos hold or Loiter, then, if all looks well, RTL and finally Auto. On one copter I pluged incorrectly one ESc and the copter try to flip during the first test
I have found it best to not start out in any mode that requires gps such as loiter. I almost always start out in alt hold.
One thing I do after setting up a new copter to confirm all is as it should be is arm it then hold on to it VERY carefully, with gloves and safety glasses, then just throttle it up enough so it feel's like it's lifting it's own weight. Then tilt it forward and sideways and you should feel it fighting that trying to keep it level. On one occasion it was opposite and most certainly would have been an instant crash. I had the props on wrong. You can also sort of notice if it vibrate more one way than the other and it's easy to narrow down which motor and prop is vibrating more than the rest. You can also use your TX and move the stick around to confirm it reacts as it should. Obviously you have to be very careful. I've had my son help me out with the TX stick so I can hold on with both hands.
If it continues to beep and not arm your probably your gonna need to re-do some or all of the mandatory set up including calibrating the esc's. At least that's been my experience. Let me know how it goes. Good luck!
I know that sound it's usually when it detected a crash I think. It should go away after you power it up again ..no??
Jim, perhaps it help if you can take a video doing didididah and if your issue is different than this one perhaps you have more help if you open another specific post ;) and is isefull too if you have a log too, better enable all
GREAAAAATTTTT!!!!!! , I had similar issue on my old cuad but the symptom was pulsate in loiter, only one arm little twisted, it's give me a long headhache UFF!!
I changed the name of this thread it had nothing to do with the firmware install. It just coincided with that.
Andy posted that it looked like RCIN rarely goes below 1500 yet APM P radio calibration page shows 892-2006. So it seems there is some issue with that not registering with the controller. Yet it shows on the radio calibration page so what the heck does that mean??!!
I've plotted the 4 rcout channels against ch4 rcin (should be yaw). Ch4 looks to be going as you intend, but two of the rcout channels are really low and two are really high. I'm not sure which is wrong, but I would guess you have a hardware problem with two of the motors/escs. The whole thing looks very unbalanced and your ErrYaw is all over the place.
rcinout.jpg
Thanks Andy
It would seem that is what you would expect to see... two high and two low because to yaw to the right it would spin motors 1 and 2 faster than 3 and 4. So if that's what the output is yet it's barely yawing right then it must be a mechanical issue as you suggest. Interesting to note that motors 1 and 2 are noticeably warmer than 3 and 4 and my flight time seem reduced. It would also stand to reason it's the all in one esc because that is the most difficult thing of all to get at..... being as I'm a firm beleiver murphy never takes a day off!
Well no, you yawed right AND left in the flight? You can clearly see that in RCIN4, but its always the same motors which are high/low (which is not what you would expect to see).
-
1
-
2
-
3
-
4
of 4 Next