Hey guys,
I need some help, I have had some issues where my quad has been repeatedly flipping over mid-flight. Once the quad is on the ground a very strange sound is emitted. I have checked my motors and ESC's and they are all perfect. I am thinking that it might be a glitch. I have a videobelow which continently catches it flipping. Luckily All I have broken so far is a few props and some nylon bolts.
Please help me!
***UPDATE***
Please look at my new discussion, the problem continues!!
Replies
Guys please take a look at my new discussion, My problem is continuing!!
Craig, have you considered your Lipo Batteries, and ESC. Is your ESC set to slow cut throttle when pack voltage decreases past a set amount. Check your pack voltage as well when it is fully charged. Do you know how to check the voltage for each cell?
I have wasted many hours in the past looking through logs, code, inspecting hardware instillation, only to discover It was a bad Lipo cell and ESC settings.
Check the nominal voltage of each cell charged and discharged.
I have just soldered all my connections and have reloaded v2.4.1 onto my APM, I have not had a chance to go buy some more prop's yet though so feedback on whether it was worth the effort is not yet available. I Am going to try buy some tomorrow, I will let you guys know what happens!
The reason I am posting now is that I have tryed moving ESC's and motors. It still happens.
@Randy I have calibrated all my ESC's separately with the TURNIGY programming card, they are all set to shut down at the lowest possible battery voltage setting, the soft start is off and the brake is off.
@heikki.Tukiainen I am assuming it is the APM because it has been flipping on different sides.
@jasonshort I will load up v2.5 as soon as it comes out and I will feedback to you guys.
@Duy Pham I am quite sure my connections are solid, I would solder them but I don't really want to :), if I load v2.5 and the problem continues I will solder them.
Thanks to all
PS I just wrote that entire reply on my iPod, what a mission!!
check connection between motors and ESCs, it should be soldered directly, do not use connectors.
I suspect a hardware issue. Maybe you haven't initialised your ESCs so an engine is shutting down when your throttle gets too low? Is it always the same engine that stops turning (i.e. does it always flip the same way?). If you move the ESC to another arm does the problem move with the ESC?
Maybe try putting something heavy on the quad to force it to work harder (i.e. keep the motors spinning faster). If the problem doesn't happen then you know this theory is correct and it's time to check (or reinitialise) the ESCs.
Hi Craig,
the latest code has had us spending about a month bullet proofing the "DCM" implementation. A few bugs were found that could cause this to happen. They are very rare but certain vibrations and frame setups could induce it. We feel very confident the next version - now 2.5 will solve your issue. It also flies even better!
I expect the release to happen in the next day.
Jason