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It's happening!! [Martian II][Apicalis first build]
#16
That sux! And Banggood might press you to take a replacement board instead of a refund - so you might hold off on ordering that part until you find out. But then again, nothing wrong with having 2 spares. Big Grin
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#17
(19-Apr-2017, 10:34 AM)sloscotty Wrote: That sux! And Banggood might press you to take a replacement board instead of a refund - so you might hold off on ordering that part until you find out. But then again, nothing wrong with having 2 spares. Big Grin

Yeah my thought exactly. It's cheap as hell. Paid ~6-7€ for the one from china. The one ordered in germany costs 12€ but I am willing to pay it to get it tomorrow
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#18
   

As you can see the Frame and the new PDB have finally arrived! I am really pleased with the wiring so far. But the Receiver and the VTX are annoying for me since they are not symmetrical :/

But I have a BIG issue! When I started the motors for the first time it smelled weird. Not like blown up capacitor, not like burnt PCB or popped regulators. The +5V and +12V are working in order and the Flightcontroller aswell.

Please take a look at this Video I took and tell me if the motors sound normal. Tomorrow I will turn it on again and check step by step for a short amount of time if anything is overheating or burning. Btw. the Motorscrews are the perfect length and don't touch the motor windings

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#19
Doesn't sound right. Have you tried each individual motor with the motors tab? (I assume you calibrated.)

Any smell would bother me.

(Am glad you finally got your frame - and sorry there's still problems to solve.) Sad
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#20
(20-Apr-2017, 08:04 PM)sloscotty Wrote: Doesn't sound right. Have you tried each individual motor with the motors tab? (I assume you calibrated.)

Any smell would bother me.

(Am glad you finally got your frame - and sorry there's still problems to solve.) Sad

Good that you mention it, I didn't recalibrate since I put it in the frame and before that I didn't calibrate the FC while it was really leveled. I can't really imagine that the parts are broken. Would be way too many at once.

I got the feeling that they are out of sync or maybe the Gyro get's messed up but i can't really imagine that (again I have no practical expirience with multirotors)

Tomorrow I will:

- Recalibrate the FC
- Check BL Heli Suite for Updates etc
- Set the Rotation direction of each Motor
- Will do a rev up of each motor (recorded in a video)
- If problems still continue I will check if the motors really rotate freely.
- If they do so I will rev them all up and check if the smell reappears and will try to locate the source


Any other recommendations?

I got the feeling that i might have forgotten something really basic. Can anybody recommend a perfect "first setup tutorial" series on Youtube?
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#21
I was meaning calibrating the ESC's in the motor tab of Clean/Betaflight.

With props removed (I see you do that fine). Connect with Betaflight (NO lipo plugged in), go to motors tab and enable motors. Move master slider all the way to top. NOW plug in lipo battery. Move master slider all the way to bottom. (You should hear musical tones from ESCs.)
Now try the motors to see how they sound (individually and/or all together).

There are a lot of good videos out there - look for one with your FC, someone's probably made one.

(The smell still concerns me...)
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#22
Just before I read your answer I watched a video from AndyRC about exactly that Big Grin

First of all, the smell is gone! Before I made the last Video I blew up one of the ESC Caps. Appearently there was still some electrolytes left over on the ESC board which I of course removed after that. Since that I can sense no obviousl smells.

Today I upgraded the Firmware on all ESCs and set the rotation direction and calibrated them. After that the Motors worked way better, but still have these clicking noises which remind me of the Motorbrake Sound when i throttel down.

Also I have a lot of noise on my Videofeed, I didn't realize the PDB had no Filtering on it. Will have to add some later.

Check the Videos, as you can see the Motors are running smoother


And bloody hell is it loud in a closed room


But in this Video you can rather clearly hear the "clicking noise" the engines make. I immediatly stopped flying after making the last Video since it just can't be normal to have these noises. But other than the acoustic noise and the visible noise on the video feed the Quad had no issues.


Btw. the Video Out mod for my Kylin Vision goggles worked Smile

       

Here a picture of the assembled quad. I will shorten the Batterylead, fix the RX antennas and I will switch out all the Frame screws for purple anodized aluminium. Maybe a good name for my quad will be purple heart xD
   
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[-] The following 2 users Like Apicalis's post:
  • Carl.Vegas, sloscotty
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#23
I did hear a bit of a "rattling" noise. Do any of the motor bells feel looser than the others? Can you duplicate the sound when testing each motor individually (using the sliders in the motors tab)?

Glad you got the other problems mostly solved! It looks good!
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#24
(21-Apr-2017, 01:26 PM)sloscotty Wrote: I did hear a bit of a "rattling" noise.  Do any of the motor bells feel looser than the others?  Can you duplicate the sound when testing each motor individually (using the sliders in the motors tab)?

Glad you got the other problems mostly solved!  It looks good!

Nah the bells are all tight in there and don't rattle at all and have no friction with something.

In this Video from before you can cleary hear the rattling between 0:10 and 0:12 [mid throttle]



Before I have flown all motors were running smooth (after I calibrated the ESCs). I currently have my quad at work but I could go there to check it out if I have enough suggestions for things that i could try to fix the issue

EDIT: Btw. the ESCs are still running on Oneshot125 and not any D-Shot protocol

EDIT2: Talked to some of the local FPV guys via Facebook. He told me it might just be PID tuning and the noise in the electric circuits since there is no filter on the PDB and the sound is caused by the Motors braking like i suggested before
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#25
Great build thread and awesome work on the build. I wouldn't begin to have any idea what's up with the sound but I am glad it's doing better.

have you figured out if it is just one of the motors or if it's 2 or more of them yet?
carl.vegas
Current Quads: Operational: Diatone GT2 200 In need of repair: Bumble Bee, tehStein,  Slightly modified Vortex 250 
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#26
(21-Apr-2017, 03:59 PM)Carl.Vegas Wrote: Great build thread and awesome work on the build. I wouldn't begin to have any idea what's up with the sound but I am glad it's doing better.

have you figured out if it is just one of the motors or if it's 2 or more of them yet?

Thank you. I am starting to get more and more fixed on Noise issues the more i think about it. Because mechanically everything is fixed correctly. Each Motor handturns like the other one. No spacing where there is no need for spacing so I am 100% sure the rattling is not a mechanical issue.

But the Motorbrake sound is a clicking sound just like the that rattling I am observing. And you can clearly hear in the video that the rattling is coefficient with the Rotation speed, which further focuses me on the electrical noise. High thrust = high noise.

And there is definetly some really high electrical noise going on  when i throttel up. Sometimes the FPV view was not visible at all and it was all interferrence.

So the next step would be to fix the electrical noise to get a acceptable Videofeed. Once this is done I can go back and check if the motors still have issues.

The noise happens an all the motors. I checked it before i made those videos.
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#27
Maybe that clicking noise is loose magnets in your motors?

I've never had any trouble with motors from MyRCMart, but it sounds like they may have dropped the ball with these motors. See: https://www.rcgroups.com/forums/showthre...st37347737
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#28
(21-Apr-2017, 08:54 PM)unseen Wrote: Maybe that clicking noise is loose magnets in your motors?

I've never had any trouble with motors from MyRCMart, but it sounds like they may have dropped the ball with these motors. See: https://www.rcgroups.com/forums/showthre...st37347737

damn man, that hurts my feelings xD I gonna measure at least the resistance of each phase next time I can work on my quad. But loose magnets on all motors, can't imagine that. Let's hope not.

But do your quads also make a clicking noise when they brake? I mean normal motor brake. Max throttle -> no throttle
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#29
I have heard people having problems with those motors lately. Loose magnets and poor bearings. My rcx 2206 v2 motors have held up good for over 200 packs, but yours could be from a different batch
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#30
Fuck my life. I will take a look tomorrow or sunday. Maaaaan I was so careful to do everything as perfect as possible. It would be horrible if something like this fucks up my build -.- Especially when replacement motors take forever to go through customs Sad

ARRGGGGH

I even ordered spare parts (extra ESC and Motor). I hope if something is actually broken that it's only one and the spare is working in order
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