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 Rank: Newbie Groups: Registered
Joined: 02/04/2016 Posts: 2 Points: 6 Location: Edmonton, Canada
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I have completed my drone build and verified blade rotations, calibrations and am unsuccessful in getting my drone to hover. As it attempts to lift off it just flips over.
Upon review pack books and videos i have noticed inconsistencies with respect to which ESC is which one gets plugged into which slot
Can someone please clarify what number should associated with left/right front and rear motors, and into which slots should each of these numbers then be plugged into
does 1 go into slot 1, 2 into 2, etc.
Thanks
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 Rank: Vice-Master       Groups: Registered
Joined: 07/01/2015 Posts: 856 Points: 2,479 Location: Sevenoaks, UK
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Hi, This are the correct positions of stickers: Front left: 1 Front right: 3 Rear left: 4 Rear right: 2 When you label the cables this way, they should be connected to the flight control unit at positions corresponding to the labels on the flight control units - cable 1 to ESC-1 contacts, cable labelled 2 to ESC-2 and so on. Please double check your rotation direction test. In my case even though everything seemed OK and all the ESC cables were connected according to their colour, the motor on one of the arms was spinning in the wrong direction. This Is easily fixed by switching around any two of the three cables between the ESC and the motor. Any images I post on my personal builds are free to be used and shared under Creative Commons Attribution license, which means you can do what you want with them, on the condition you mention I'm the author.
Happy building :-) http://www.model-space.com/gb/
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Rank: Newbie Groups: Registered
Joined: 02/04/2016 Posts: 2 Points: 6 Location: Edmonton, Canada
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Thank you. I have verified that my wiring is as per you has indicated.
Anything else i can try? If i fiddle with the right transmitter toggle while trying to get the unit to hover by pushing the left control forward, i can at least get off the ground, but the unit takes off and is very unstable, will not just hover.
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Rank: Vice-Master Groups: Registered
Joined: 05/04/2013 Posts: 540 Points: 1,630 Location: England
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Have you balanced your blades? Finished 3D Printer, RB7, Hummer, Skyrider drone & Combat tank collection http://www.model-space.com/gb/
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 Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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Have the motors been calibated?:
http://forum.model-space...spx?g=posts&t=18229
and all calibrations/settings as per the info here:
http://forum.model-space...spx?g=posts&t=17972
Also ensure that all of the plugs into the main ECU are properly seated.
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Rank: Vice-Master Groups: Registered
Joined: 05/04/2013 Posts: 540 Points: 1,630 Location: England
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I have the same issue and it seems to be sensor based as the direction is inconsistent. Basically each time I turn it on it just flips over and starts damaging itself. Sometimes it will sit level for a few seconds before doing it. Looking at the attitude indicator via the PC app it's going insane. Upside down, facing straight up each time it polls the sensor the result is wildly different. Perfomed all calibrations, red light is solid, green light is flashing. All blades going the right way. Finished 3D Printer, RB7, Hummer, Skyrider drone & Combat tank collection http://www.model-space.com/gb/
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Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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Have you calibrated each of the motors as per the link noted above and double checked the plugs are properly seated into the ECU?
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Rank: Vice-Master Groups: Registered
Joined: 05/04/2013 Posts: 540 Points: 1,630 Location: England
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I have checked the escs multiple times. Plan on calibrating each motor tomorrow if I get a chance to look at it again. I don't see how that can be the cause though when the attitude indicator is going crazy when the drone is stationary. Finished 3D Printer, RB7, Hummer, Skyrider drone & Combat tank collection http://www.model-space.com/gb/
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 Rank: Elite   Groups: registriert, Registered Joined: 20/03/2011 Posts: 2,356 Points: 7,122 Location: UK
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kenjara wrote:I have checked the escs multiple times. Plan on calibrating each motor tomorrow if I get a chance to look at it again.
I don't see how that can be the cause though when the attitude indicator is going crazy when the drone is stationary. What version of Windows are you using? I had this happen using Vista but once I used my sons Windows 9 laptop it was stable. Definitely calibrate each motor. Spencer
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Rank: Vice-Master Groups: Registered
Joined: 05/04/2013 Posts: 540 Points: 1,630 Location: England
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I am using Windows 10 64bit. Finished 3D Printer, RB7, Hummer, Skyrider drone & Combat tank collection http://www.model-space.com/gb/
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Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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kenjara wrote:I have checked the escs multiple times. Plan on calibrating each motor tomorrow if I get a chance to look at it again.
I don't see how that can be the cause though when the attitude indicator is going crazy when the drone is stationary.
Because of varying electronics, one or more of the motors can run at a slightly differing speed which could cause a flip, hence the need to be calibrated.
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Rank: Vice-Master Groups: Registered
Joined: 05/04/2013 Posts: 540 Points: 1,630 Location: England
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Tomick wrote:kenjara wrote:I have checked the escs multiple times. Plan on calibrating each motor tomorrow if I get a chance to look at it again.
I don't see how that can be the cause though when the attitude indicator is going crazy when the drone is stationary.
Because of varying electronics, one or more of the motors can run at a slightly differing speed which could cause a flip, hence the need to be calibrated. Sorry Tom you must of misread. Yes I understand that, but that's not what I was questioning. The application which shows the output from the sensors was showing rapidly different attitude each time it refreshed. This is when the drone was just stationary. Regardless I have now calibrated each motor. As I said before the direction it flipped was inconsistent. After this I plugged the battery back in and did the sensor calibration once more. It actually went by the book this time. Before the blue light did something like flash instead of turn off for a few seconds and come back on. Hopefully this now means my gyro is configured and it will no longer flip itself over. I can not test fly it at the moment but I did test it without the rotors and there is no longer a random change in speed on the motors. It was also responding to my commands. Hopefully it will now fly ok, the only problem I have now is the sensor reading app does not work anymore. The copter acknowledges the cable being connected to the PC and I can connect to com3 but none of the values change anymore. I have taken a video of my sensor readings going crazy before recalibrating and will post a link when it was uploaded. Finished 3D Printer, RB7, Hummer, Skyrider drone & Combat tank collection http://www.model-space.com/gb/
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Rank: Vice-Master Groups: Registered
Joined: 05/04/2013 Posts: 540 Points: 1,630 Location: England
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Here is a video of my sensors going crazy. The one I have been worried about is the gyro / attitude sensors as I believe the copter was constantly trying to correct itself based on these in manual mode. Link to VIDEOCould someone please clarify which values rely on the GPS and which ones do not. I assume the attitude is GPS assisted but the gyro values should be independent. Finished 3D Printer, RB7, Hummer, Skyrider drone & Combat tank collection http://www.model-space.com/gb/
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Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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Have asked Hobbico to take a look, crazy sensor readings are not something I have seen and could be a number of things that might throw this up. Hopefully have word back shortly.
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Rank: Vice-Master Groups: Registered
Joined: 05/04/2013 Posts: 540 Points: 1,630 Location: England
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Thanks Tom. My guess is that it was trying to right itself constantly because of those gyro readings. I know I did not have the GPS light on when that video was taken but it was on when it happened before. If it dries up by the time I get home from work I will try to have another play. Finished 3D Printer, RB7, Hummer, Skyrider drone & Combat tank collection http://www.model-space.com/gb/
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Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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Ensure that the gyro plug is properly seated in its slot.
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Rank: Vice-Master Groups: Registered
Joined: 05/04/2013 Posts: 540 Points: 1,630 Location: England
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Its turned into a nice evening and I was hoping to get my drone working as the weather is perfect. Alas it was not to be. Here is a better video outside with the GPS LED lit. AS you can see the GPS seems to be reading fine when you look at the heading. Link to VIDEO with crazy readings and GPS.In this VIDEO you can see it adjusting throttle rudder and elevation settings to try and steady itself.The attitude and gyro readings are still going bat@!#% insane. I am now officially out of things to try.  I managed to get the PC application working again by unplugging everything and starting again. To rule out interference I checked all wires, twisted them and tried reading the gyro sensor with the esc's and GPS unplugged but still no luck.  Is there anyone technically involved with the model that we are able to get help from? Finished 3D Printer, RB7, Hummer, Skyrider drone & Combat tank collection http://www.model-space.com/gb/
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Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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I did say I would come back to you with some info.
1. Make sure that the gyro sensor board is level and securely locked in its socket inside the top of the Flight Controller case. If it is loose inside the FC case, the Attitude Indicator (AI) will drift like what is shown in your video.
2. Did you perform a sensor calibration after the drone was powered up? (Left stick to the upper left corner) The throttle and rudder indicators did not move in your video. This procedure should level the AI even if the IMU is not level.
3. If the ambient temperature was below 0 degrees C, the sensors going crazy is what can happen. If the temperature is above 5 degrees C, the controller should be stable.
If the above suggestions do not stop the AI from drifting, I suggest that the gyro sensor board be replaced.
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Rank: Vice-Master Groups: Registered
Joined: 05/04/2013 Posts: 540 Points: 1,630 Location: England
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I know Tom but given the cost of this and the problems with the subscription so far you can see why I would want this resolved as swiftly as possible. Last night I took the flight controller case apart to check the sensor board and tried calibrating several times after. It certainly was not below zero. Sounds like a duff board then will contact customer support for a replacement. Thanks Shane Finished 3D Printer, RB7, Hummer, Skyrider drone & Combat tank collection http://www.model-space.com/gb/
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Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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Considering that I raised the query yesterday and got back to you first thing today, I'd say that's pretty swift.
You need to understand that we need to ascertain if its a construction or electronics problem, which in yor instance the latter seems to be the case.
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