I think the H may confuse where it is vs where it wants to be. With the old firmware switching back into GPS could cause a sudden flyaway but once it got where it wanted to be it was solid. Look at 6:25 in this video.
What to do when your TYPHOON H suddenly FLYS AWAY!!!
- Thread starter CAPTAINDRONE
- Start date
Capt,
Did you happen to notice if the tail light changed color when you changed flight modes?
A stupid theory:
When switched off, most GPS receivers will remember the last known position when switched OFF.
Is it possible, that when the H looses a GPS FIX (may still be receiving signal) that it tries to fly to the point of the last known FIX?
Glad you got her back without incident, would have scared the crap out of me. Still don't trust mine to go over water again.
Did you happen to notice if the tail light changed color when you changed flight modes?
A stupid theory:
When switched off, most GPS receivers will remember the last known position when switched OFF.
Is it possible, that when the H looses a GPS FIX (may still be receiving signal) that it tries to fly to the point of the last known FIX?
Glad you got her back without incident, would have scared the crap out of me. Still don't trust mine to go over water again.
I recall somewhere around on the forum someone telling they always wait for at least 20 sats, I've also waited for at least 18-20 before taking off
Just curious Capt. if you suspect turning
Greg
I would definitely like to know someones feedback on this. At the moment, I'm speculating of course, but I think the biggest issue Yuneec has at the moment regarding fly aways is GPS (autonomous flight) taking precedence over Mode 2 right stick input. This should NEVER be the case. GPS and autonomous flight are there to augment the pilot not the other way around. The pilot should always have precedence and the ability to override autonomous flight and regain control even if its fully manual. It seems like the the ST16 has a good link to control the H yet the autonomous functions are overriding right stick control inputs. If those could be truly disable the pilot should be able to regain full control. After all, the pilot is the Captain eh?
Greg
When this happens you should turn off as much of the copters automation as possible. GPS glitches are very common for causing this as has arguably been determined with various gps based flight controllers, where going full manual is the best solution.
In gps mode, it is not really the pilot in charge, it is the gps.
In gps mode, it is not really the pilot in charge, it is the gps.
Yes I agree. Yuneec should have gps on/off to a switch. And even better, a switch for true full manual. But hey.....you know that will cause a huge problem because most people would crash in full manual
I think plain and simple the early H's have some odd issues with the Compass Board. I got my H(s) when they were first available at my LHS, which was only a couple weeks after they started shipping. So they were the first "production run". My first H had the toilet-bowling, J-hooking, drifting, loss of altitude. The thing was it didn't do it till had flown for several minutes. The first few minutes were just fine (was not a heat issue as I was flying during the morning when temps were in the 50s). These issues would start after the first minutes and just continue to get worse the longer you flew.
I took it back to my LHS that swapped it for another on their shelf. That one seemed to work great even with the first "disappearing" firmware upgrade with the exception of the flashing orange light when deploying/retracting the LG. The 2.21 firmware upgrade introduced odd behavior, mild drifting in both X and Y axis, titled camera, "re-take-off". 2.24 fixed everything. It flew perfect. 2.25 once again degraded my H. Everything that 2.21 did was back. I got tired of this and called Yuneec. They only asked me a couple questions. Guessing my write-up had the information they needed. One question that leads me to believe they now know there is an issue with the first release of Hs was; "Did yours come with the Wizard?" After that question they told me to send it in. I sent it in only a week and half ago.
Its on its way back from Yuneec with "Compass Circuit Board" listed on the repair "bill". I started a thread asking if anyone has experienced any further problems with their H after the Compass board was replaced and no one has responded. I'm taking that as "no further problems".
Thanks for the tips, I'll be sure to keep that in the back of my mind should it act funny upon its return...
I took it back to my LHS that swapped it for another on their shelf. That one seemed to work great even with the first "disappearing" firmware upgrade with the exception of the flashing orange light when deploying/retracting the LG. The 2.21 firmware upgrade introduced odd behavior, mild drifting in both X and Y axis, titled camera, "re-take-off". 2.24 fixed everything. It flew perfect. 2.25 once again degraded my H. Everything that 2.21 did was back. I got tired of this and called Yuneec. They only asked me a couple questions. Guessing my write-up had the information they needed. One question that leads me to believe they now know there is an issue with the first release of Hs was; "Did yours come with the Wizard?" After that question they told me to send it in. I sent it in only a week and half ago.
Its on its way back from Yuneec with "Compass Circuit Board" listed on the repair "bill". I started a thread asking if anyone has experienced any further problems with their H after the Compass board was replaced and no one has responded. I'm taking that as "no further problems".
Thanks for the tips, I'll be sure to keep that in the back of my mind should it act funny upon its return...
I have been in the air with my H (bought in April and updated 2 weeks ago) in about 8hrs and never have had a problem whatsoever. I have done the calibr. ofcourse. I ALWAYS check to have at least 15-20 sats and ALWAYS wait about 3-4minutes on the ground (motors off) with sats to stabilize before take off. Then I hoover to about 3meters and do two 360's to check for drifting. I NEVER fly in KP index 5 or higher. So far my H behave like a dream. Ofcourse I fly in Angel and keep my phone off! I use an ITELIT antenna. I live in Stockholm Sweden.
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Agree, solid machine, and also very good looking bit of kit, totally love mine, enjoyed your vid as well nice flying [emoji106]
Of course it will drift somewhat (look up gyroscopic precession), it is no different from flying a model heli in that state. If it is twitching then the flight controller is a problem too with whatever happened. Normally though if you switch on while on a level surface and do not touch anything during boot then the flight controller will calibrate that position as level. If you turn it on not level then the controller will assume that angle is the level point.
Keep in mind you have GPS and a flight controller, if the problem is with the flight controller then turning off the GPS will do nothing, which doesn't surprise me with a Phantom as the naza is a shocking bit of kit which I have had many problems with (gain twitching, random crashes etc).
For me, if it starts to flyaway then first thing I would do is turn GPS off if you know how to fly these.
I was about to film away from the horizon sun but the H decided to fly directly towards the sun so through my squinting eyes I could only make out the shape of the H & no colors.
Your theory could have merit as the place I flew before this was the direction the H flew in when I hit the RTH.
I've flown many, many flights since May and never worried about the number of sats and never had an issue. This is why this event is confusing as it was no different from any other flight. Pre-flight was reprted as fine on the ST16 but apparently something in the pre-flight was not fine as it went into demented Dr. Jekyll mode within seconds of the take-off.
Now that is interesting and should NOT occur! When you switch in and out of GPS mode, the H should remain in the same spot and not fly to some other location. What I believe happened there appears to be that there was an internal correction going on between the GPS and Compass (this is what the IMU in a Phantom does and I think it's no different in the H). When switching back into GPS mode, the H flew back to the location the internal calibration was telling it was the true location between offsets in Compass and GPS.
I will certainly switch off the GPS (if it allows me to do so) should this occur again. Anything is worth a try.
Since mine has been back from repair. I updated to the newer firmware (they forgot that step) I have flown 3 flights. The first flight I noticed slight drifting to the left. I always take off facing away from me.
I took a good minute at a 20 foot hover before it settled down and would hold position, this with very little or no wind. Flight #2 & 3 I did not notice the drifting. Makes one wonder just how much time do you need to let the H acclimate to a new location.
I took a good minute at a 20 foot hover before it settled down and would hold position, this with very little or no wind. Flight #2 & 3 I did not notice the drifting. Makes one wonder just how much time do you need to let the H acclimate to a new location.
Hi,
You do not have to set the H on a level surface at startup for flying as the imu is only calibrated to level when you perform an imu calibration. IOW the startup alone does not calibrate the imu to whatever position the H is in, it is a warmup and integrity check only.
Ha ha, I know. Sometimes even the strangest suggestion may not be so strange after all because I'm certainly somewhat stumped. I really do appreciate all the input.
The "H" is just a basic flight model drone that should fly with no issues. Out of all the drones I've flown over my years flying drones, this one is the first to do this. Drones will all have their compass and calibration issues which can be easily tweaked as long as there are no internal problems. But drones that flyaway right after take-off should have become extinct in 2014... We are 2016 and this should not be happening today.
Right. I've taken off many times with the H on the side of a hill at around a 15 degree slope. No problems with takeoff, it levels itself out immediately upon liftoff. I just hand catch upon landing.
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