"yes voltage regulator = UBEC
All 4 ESC's will now plug into APM board directly - not powered by power board any more.
UBEC plugs into the 6th APM from right to left (1 being far right as you look at the APM from behind)
The red and black of…"
Michel Lubbers's Discussions
Arducopter crash
Started this discussion. Last reply by Richard Gosling Mar 18, 2011. 15 Replies 0 Likes
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ModeratorSebastian Gralla replied to Michel Lubbers's discussion Arducopter crash
"power is not the issue
it's GPS related"
Hyon Lim replied to Michel Lubbers's discussion Arducopter crash"I see. This case, the throttle suddenly increased, that may quadrotor beyond visual, right?
So you thought that some other problem caused this situation, not the power. Isn't it?"
ModeratorSebastian Gralla replied to Michel Lubbers's discussion Arducopter crash
"if reciever fails, arducopter will not drift away, it will flip, or remain stable (flies up or down)
if one ESC fails (gets a brown out, or shuts down), arducopter quad will immediately flip
but this will not happen if you have a good build…"
Hyon Lim replied to Michel Lubbers's discussion Arducopter crash"In case only cpu brown out, you're right.
But in that case (power is unstable due to motor consumption), receiver or ESC will also not working properly.
I already experienced similar problem because of unstable power."
ModeratorSebastian Gralla replied to Michel Lubbers's discussion Arducopter crash
"it didn't get a brown out, IF arducopter gets a brown out in flight, it will immediately flip over and crash into the ground
please don't post if you actually don't know what's going on, thanks"
Hyon Lim replied to Michel Lubbers's discussion Arducopter crash"There are possiblity of 'brown out'.
I don't know but in case, the power source of APM is dropped below 5v, cpu may rebooted.
After rebooted, sensor calibration algorithm may executed.
Maybe this is bug? Should…"
Hyon Lim replied to Michel Lubbers's discussion Arducopter crash"Can you explain with more detail?
Belows are my understanding.
1. I've searched what the UBEC is, I found that it is voltage regulator.
It is needed to provide 5v to APM board instead connecting ESC's…"
Michel Lubbers replied to Michel Lubbers's discussion Arducopter crash"Hello Richard,
Thanks!!
This weekend I rewire my copter like you did.
Keep you posted!!'
Regards, Michel"
Richard Gosling replied to Michel Lubbers's discussion Arducopter crash"i just connected a UBEC between battery and APM board and my 'freak out' problems have gone away. You will have to plug all ESC's into APM directly and don't forget to disable the red cable (+) from all ESC's beforehand...…"
Heino R. Pull replied to Michel Lubbers's discussion Arducopter crash"I was testing GPS hold on my Arducopter after Christmas and noticed the GPS losing lock and the quad drifting badly. It turned out the low temperature was causing the GPS to reset itself back into NMEA from binary. A new GPS fixed the problem."
ModeratorSebastian Gralla replied to Michel Lubbers's discussion Arducopter crash
"what do you mean by "drift"?
does it slowly fly away? that's normal, it will never stay at one location without gps hold
if gps was enabled, it lost gps signal (this happens often to mikrokopter GPS, but they crash when signal…"
Michel Lubbers replied to Michel Lubbers's discussion Arducopter crash"Hi jason,
Thanks for responding, I agree with your statement.
On a earlier flight I noticed some drift, it was possible to trim this drift out on the transmitter, no big problem but weird.
It is possible there is a connection…"
Developerjasonshort replied to Michel Lubbers's discussion Arducopter crash
"Not sure but an IMU failure or CPU Freeze would most likely cause the copter to start rotation and falling quickly.
Jason"
Michel Lubbers posted a discussionArducopter crash
While testing the Arducopter pos./alt. hold function (ArdupiratesNG) something goes terribly wrong.Initially it was a success but suddenly the copter starts to drift and within a few seconds it was beyond a controllable visual range. The flight ends in a pine tree without any damage.There is a road and lots of water in this area so it was my lucky day.With this kind of luck the best place to be is in Las Vegas :-) Worst part is not knowing what causes the crash, any ideas?Could be a GPS or IMU…See More
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- About Me:
- I am flying mainly with F3J & F3B class gliders.
Just started with Ardupilot.
- Tell us a bit about your UAV interest
- stootkop.nl
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Comment Wall (1 comment)
- At 1:08pm on November 7, 2009,
Multimull said… - hi Michel,
Klinkt goed!
Wij zijn al ff actief, kijk ff op www.mullie.nl staan paar videos. Veeeel meer, maar niet online, eerste out-battery-crash gehad en overleeft, 2km out...
Verder druk aan de bouw ook, grote 2m kist met benzine duwprop, LongRange TX besteld (JMStech/ Daniel Wee van RCG) Verder EZosd binnekort (we kennen Sander Sassen goed die e.a. ontwikkeld) Verder een Moviestar (Multiplex, maar niet meer verkrijgbaar) met HD cam erin. Volledige FPV set met Fatshark goggles (echt top!!!), 8dBi patch en 19dBi dish antenna.
Wat je je direct Email / Skype? kunnen we wat chatten some time!
gr,
Multimull
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