Servo glitching
I just got my APM 2 and have everything hooked up inside my old EP-converted .30 trainer. Almost everything seems to be working as intended.
Once in a while I get some servo glitches. It mostly happens when I apply rudder or elevator rapidly. When I for example move the rudder, the elevator also moves slightly even if I am not touching that channel at all. Usually the unintended movements are tiny but once in a while it makes like 30% throws. It seems to be worst in manual mode.
I am using a Turnigy Plush 40A ESC that also is powering the APM 2 and rx. I am using old-school 35 mHz Hitec Optic 6 radio and a Corona syntheizer rx. All the servos, ESC, cabling etc. are the same as I have been using in the plane without problems before.
Does anyone have any advice for a drone-newbie?
Replies to This Discussion
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Permalink Reply by Veikko Vierola on -
Have u tried another receiver?
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Permalink Reply by martin.stens on -
No, I have a couple in other planes I could try. There has never been any problems before with the one I am using now though...
Could it be related to the ESC / BEC? I have a Hacker 55A that should have a better BEC than the Turnigy I am using now.
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3D RoboticsPermalink Reply by Chris Anderson on -
Sounds like RF interference. Try to reposition your wires.
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Permalink Reply by martin.stens on
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I have tried changing reciever, moving the wires (output on one side of the plane and input and rx on the other) without any significant changes. In Mission planner radio calibration all the values jump like +- 2 while in neutral and some sudden +100 jumps (usually on yaw). How far away from the APM should the reciever be? I am now using 10 cm wires (quite thin wires).
I also tried the other ESC but that seemed even worse. I have had sucess with voltage protectors (capacitor) before. If I would try using a capacitator, where shall I plug it in when the APM is powered by the ESC. Shall I plug it in the reciever or on the output side (where it is powered by the ESC)? Don't wanna fry anything. :)
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Permalink Reply by martin.stens on
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Update, this might be useful to someone: I borrowed a Futaba Dual-conversion reciever (with crystal) from a friend, now the glitches are gone! It seems like the APM 2 don't like the Corona syntheizer recievers. As I said, I have tried with two different ones, both dual-conversion, long range recievers that have worked flawlessly in several planes before.
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