Quadcopter motor twitching. What next? | BAD MOTOR OR ESC TROUBLESHOOTING GUIDE

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0:00 - Props off for safety!
0:47 - What's the symptom of a bad ESC or motor?
1:27 - Why the motor and ESC but not the FC?
2:26 - A "dragging" motor is not necessarily bad
3:41 - Start with a physical inspection of the motor
7:35 - You need to have this tool to protect your equipment!
8:44 - Starting to discuss ESC startup beeps but then...
• How To Find The Short-... - How to find the short circuit in your quadcopter.
11:19 - Motor construction, and how it relates to how motors fail
13:44 - Additional tests to see if motor or ESC is bad
• Is Your ESC Broken | H... - How to tell if your ESC is bad.
14:37 - Next step: swap the motor with a good motor and see if it spins
15:33 - How to interpret ESC startup beeps for troubleshooting
21:22 - How to tell and what to do if your FC is damaged
• How To Fix A Bad Motor... - How to use resource remapping to work around a bad motor output.
26:22 - Can you really build a whole quadcopter with no soldering and not computer?
• Anybody can build an F... - Watch Ken Heron build a quadcopter with NO SOLDERING

Опубликовано:

10 июн 2024

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Комментарии : 240

@JoshuaBardwell 2 года назад

Get your BACK TO THE BANDO t-shirt from FPV Crate: bit.ly/3OZTsiA

@BB-jq6ek 2 года назад

that's funny I hit your Amazon link and bought the smoke stopper and 2 minutes later that one blew up on you... should I return it and wait for a better version?

@Nam_flies_drones 2 года назад

love when joshua from the future comes in, hes so wise

@maxtrixbass 11 месяцев назад

Dang that was helpful. Its hard to get such clear, concise information in the world of electronics for those of us without electronics degrees. Thank you.

@Joshuah2012 2 года назад

The number of posts where the person’s motor isn’t spinning or is twitching with PROPS ON INDOORS on the multirotor subreddit the last few days has been insanely high. Now I can link this video along with telling them they’re kinda dumb for arming inside with props on with a known issue on top of it

@user-rh1ym6se3h Месяц назад

MY SMOKE STOPPER IS FRIED TOO!!!! I WENT TO HELL AND BACK, UNTIL I WATCHED THIS VIDEO!!! Now all works, as planned....WOW! Thx Bardwell!!!

@BrysonWooden 2 года назад

I'm literally dealing with this exact issue with my quad right now, thank you for making this video!

@ShaneGraham057 2 года назад

I think JB has a bit of the psychic going on in the community. I too am dealing with similar issues (but further down the rabbit hole) :p

@h3rtz 2 года назад

same here. spooky!

@jamesburton8348 2 года назад

haha same. my motor went yesterday

@jeramboo8511 2 года назад

This happen so many times, I have an issue and the next day Bardwell made a video. You gotta love him❤️

@dhbfpv 2 года назад

Holy timing, another incredible wealth of knowledge shared. You are a treasure sir, if I had friends I would share every video you make.

@TempeiB 2 года назад

I've seen why your smoke stopper doesn't work; 17:25 the ground wire broke. At 19:15 you can see it better.

@pi.actual 3 месяца назад

Always keep your guard up. I recently had a motor on a little 3D printed Cub that I built and with the prop on I noticed it seemed to be turning backwards. So with the throttle fully closed I came up with this brain fart idea that maybe I needed to reverse the throttle channel on the transmitter. Well the second I did that it instantly went to full throttle (still in the same reversed direction) and the entire nose of my model virtually exploded into a million pieces right next to me. Luckily I was uninjured but after cleaning up the mess I noticed the motor no longer worked. The wiring looked okay but it just wouldn't turn. So I bought a new motor and guess what - same thing. I bought a new ESC and still no joy. The throttle channel was in Normal (not reversed) but when trying to calibrate the ESC I noticed it was working backwards. In order to get it to calibrate I had to start with throttle lever fully closed then move it to fully open and then it worked but the throttle channel was operating reversed even though it was in normal mode. I finally had to again hot switch from normal to reverse (this time with no prop) to get everything back in sync. It had me scratching my head for about a week. Motto is - BE CAREFUL

@tonyvladi9940 2 года назад

From one genius in youtube if esc for 1 motor if died on your 4 in 1 ,you can make 3in1 and 1 , buy separate esc control and sold it direct con power of battery line, and with testing in betaflight in pc(motor testing) find a control signal cable for motor what you need. I repaired my emax hawk pro with this idea.

@yoavallon 2 года назад

That’s like putting a carb on top of you’re fuel injector and saying you made it work…

@sufysprojects2689 2 года назад

JC? PbF?

@MrSabram07 2 года назад

@Wheelieking619 2 года назад

Thinking outside the box! Bravo chief!

@Voyajer. Год назад

@@yoavallon one of the few times where the saying if it's stupid but it works, it's not stupid is appropriate.

@metaldirtnskin 2 года назад

Turns out LED racewires, as well as looking cool, let you see the motor beeps clearly which can be handy for this kind of troubleshooting 😁

@bebenoeg5188 2 года назад

Thanks for the knowledge, I really appreciate it. Hopefully it can continue to provide useful lessons for all of us. Hope you are always healthy, thank you JB, have a great day.. 😊👍

@RichMoore-tweakin7376 2 года назад

Josh from the past, you should have done this video 5 years ago. In the past 4 years I figured out how to troubleshoot but this video makes it very easy. You've got some amazing points.. thank you so much for all your hard work

@nickbrown7700 9 месяцев назад

There is always a point with his amazing videos that I get lost and it's exhausting to keep up. This hobby is wonderful, but taxing at times. Thanks Joshua!

@basmajianmiscellany113 2 года назад

JB, great video. Simple troubleshooting with explanation along the way. I've always wondered how to check those hard to turn motors. Way to have Joshua from the future show the humanity and confusion troubleshooting sometimes brings. Nicely done.

@Uname8294 2 года назад

LOL where was this video a week ago when I had this exact problem? Thank goodness for the multicopter subreddit for pointing me in the right direction.

@MCsCreations 2 года назад

Thanks a bunch for all the tips, Joshua! 😊 Stay safe there with your family! 🖖😊

@3DIYOriginal 2 года назад

Awesome Video !! Love the way, you explain things on your RU-vid channel. There is a lot of usefull information (data) on your channel. I'm from Spain (Valencia), here is 03:32 in the morning & I'm watching your video. Can't stop watching your videos. Hello to everyone !!! 😎 THANK YOU FOR SHARING YOUR KNOWLEDGE WITH US!! 👍🏻👍🏻👍🏻😎

@wearemany73 2 года назад

Another brilliant video JB, these bread and butter clips are required veiwing for new FPV pilots and old FPV pilots alike. 😊

@jonnmedds 2 года назад

1 min and 17 sec into the video and you've solved the problem as to whether it's my motor or ESC. Thank you, all I need is a new motor

@SmirkInvestigator Год назад

wow that actually filled me with joy and surprise to know that the motor makes those beeps. Always thought the sound stage was a little wide to be a speaker in the FC.

@neuroticsdubstep 2 года назад

Solid video. You went over everything really clearly. One thing I’ve rarely run into is having just the first 3 beeps and missing the last 2 FC beeps intermittently. 75% of the time it works and flies fine. Sometimes I don’t get the beeps. I think it’s a delay on my FC initializing and sending throttle signal in time. Only had it happen with a particular FC/ESC combo

@spionfpv2428 2 года назад

Super useful video.. My newest drone just did something like this, so now it's time to troubleshoot. Perfect timing for this video :D Many thanks from Denmark.

@marcinsamotyja 2 года назад

This is the 4th time I have a problem and less than 24 later your newest video helps me

@MADFlyFpv 2 года назад

Coincidentally I am dealing with the same problem. thank you very much JB

@NikG603FPV Год назад

Thanks for this video. Just bought a smoke stopper too.

@jeffs3119 Год назад

Thanks so much I’m having similar issues. Great timing.

@MrSabram07 2 года назад

I have that same DeWalt screwdriver. That thing rocks, the speed of the rotation increases with the twist of a wrist pretty clever I love mine

@sunsetpark_fpv 2 года назад

AWESOME troubleshooting video AND "BACK TO THE BANDO" T shirt!

@Joe-bs9dj 2 года назад

Thanks Joshua

@jfsaraceno9265 2 года назад

Troubleshooting videos are high value and underappreciated

@rgross989 2 года назад

Great Videos! Please keep more trouble shooting videos. So much is learned even outside the topic.

@pexagaming5669 2 года назад

19:17 haha you ground wire on funky board thingy to XT60 is just disconnected. Lol. Thanks for the vids btw.

@Super_Mario_Fpv 2 года назад

The second half of this video is just pure education. And pretty important knowledge.

@CarbonGlassMan Год назад

The Vfly short saver IS the best. Thanks for recommending it.

@Sircrashalot1993 Год назад

Such good and accurate information!

@rodrigodiniz13 2 года назад

Joshua, the black wire from the XT60 of the smoke stopper got broken in the middle of the demonstration.

@hultaelit 2 года назад

Yeah, can see it at 19:16 before the multimeter covers it up

@JoshuaBardwell 2 года назад

Wow! That's great to know. I can fix that easily!

@pwillie2288 2 года назад

I just went through these steps yesterday. Glad to see i checked everything how the master does it. In my case. One motor would idle fine (props off) and rev to about 20% throttle then cut out. Props on, the motor would begin to idle then twitch out and stop. Turned out damaged/broken wire to motor and I suspect this limited the current that could be delivered.

@TechReview2000 2 года назад

Thank you for tips. I crashed my very large 10kg drone the other day, the motors are twitching. These tips will help a lot

@evilynz Год назад

you are great, i enjoyed watching this and solved my problem thanks a lot!

@pandrews01 2 года назад

Extremely helpful video. Thank you.

@altermannfliegt3927 2 года назад

Very good explanation. I wish I would have seen it two years ago when I started with brushless motors and ESC s. I have to learn this lesson by myself. I don't need it before with nitro motors. ;-)

@jacobreezyfpv6287 2 года назад

Thank you so much JB I can finally just send people to this video. This is the most common question I get. haven to go back and forth with questions to fix the problem no more. Lol 🤣

@eatyourvegfpv 2 года назад

Hey JB, I'm not sure if you remember or not but about a week ago you showed a video of mine with a motor issue, where one motor would run for a few seconds than 'reset' in a perfectly rhythmic way... I replaced the ESC and that cured it 👍 Just wanted to let you know as it's relevant to this video.

@SunriseWaterMedia 2 года назад

I've told you before, and I'll say it again: you have the best username! 😂🥦👍

@eatyourvegfpv 2 года назад

@@SunriseWaterMedia Haha! I do remember! And thank you 😉💚

@user-by2yb9wj8j Год назад

Hi, can u just help mi a bit? How can I replace esc? I am begginer, and have such problems as u)

@princesfpvdrones 2 года назад

Joshua from the Future, saves the day again!

@brixzereg 2 года назад

Dude your vifly has a wire disconnected you can see one wire from the board to the xt60 has come loose. That's why it stopped working.

@__dummy__7523 11 месяцев назад

Excellent!

@AlexLebed 2 года назад

I'm glad I have learned something today.

@upnorthFPVandEUC 2 года назад

Awesome info thanks!

@bohdanshcherbak6303 2 года назад

From the first moment i've seen the smoke stopper with the negative cable disconnected I was begging you to see it

@maplefpv 2 года назад

that vifly didnt die, the gnd wire just gave up lol @17:25

@NAQFPV 2 года назад

Can't wait to see the music video made with the 2:17 worship and2:22 tick tick tick. Awesome video as well

@user-rv5on4ki3e 2 месяца назад

thank you so much!!!

@metalx9499 Год назад

Turns out my twitching problem in flight was simply a de-soldered capacitor. The negative side had broken lose from the ESC negative Vbat pad. In flight the broken leg of the capacitor would tap the vbat pad and release its energy causing the twitch. Hope this helps someone. Cheers Barry

@arycave 2 года назад

Yes. And when you buy motors for a new build - buy one or two extras from the same batch. And, all connectors suck, especially placed on arms.

@yourcuteguy9737 Месяц назад

super informative

@williamlosch 2 года назад

looks like @ 17:19 the xt60 ground wire is loose on the first Vifly shortsaver!

@jeremiahthomas2669 Год назад

Good stuff

@FerralVideo 2 года назад

I've always called the ESC beeps the "Superman" tones. They just evoke the mental image of a superhero's appearance theme for some reason.

@pandemiofpv 2 года назад

Every day I learn something with you! Thank you for your time videos and dedication!

@coilockerfpv 2 года назад

Trippy. I just went through this same diagnostic process about an hour ago. It was a bad motor 🤓

@UnfairFrame653 2 года назад

i did enjoy the video

@user-ov1zi2in9u Год назад

U best. Thank.

@tourisew7513 2 года назад

Great video, I just have a bad motor right at the instant, it spinned about 10 seconds and than completely stopped.

@DarrenAllatt 2 года назад

4:05 looks like there may be a short or potential for one between the bolt and windings under the motor.

@thfpv4974 2 года назад

Funny I just asked you a question about this thanks joshua

@veram.2460 2 года назад

in my case stator was unglued from the base and moved about 15 degrees forward and backward. Thar caused motor lost sync in air and quad fall from sky. Works prefectly on the ground - takeoff - crash. Well. I replaced ESC - guess - didnt worked. then at the next turn stator just ripped wires off, shorted it and burned ESC.

@michaelmuir4039 2 года назад

You have saved so many of is thousands of dollars Not to mention some serious time to problem solve

@kurtzFPV Год назад

2:23 Joshua's Tarantino impression from Reservoir Dogs.

@erixmix 2 года назад

I've had pads pull off of a Vifly, check those output wires

@jejefpv 2 года назад

Something that often occures when testing with a smoke stopper is that it detects a short once or twice in a row and then it works as expected, it is related to the capacitor(s) which are getting charged. Another topic that would be very interesting : these last months I got into too many bad gyros (much more than before). Do you know an effective way to troubleshoot a gyro on the bench ? I had bad gyros that induced "grinding noise" from the motors, even with no props, that was easy. But I had other bad gyros which were terrible on one or 2 axis, but only a flight with BlackBox could highlight the issue. Thanks Joshua.

@RLeeVisuals 2 года назад

You Da Man!

@traviscook5144 2 года назад

As soon as you said Ken Herron I was immediately turned off. Ive found that guys personality exceedingly annoying. Just my personal opinion though and I’m only some guy on the Internet so… With that being said this is the video we all needed so great job 🤙🏻

@savvydudesrein9068 Год назад

Hello Joshua, a Happy New Year! Thanks for the really helpful videos, it has really teached me alot on my fpv growth. Anyway, i have a problem with my cinewhoop i hope you can help. The motor #2 on my cinewhoop (Cine Reptile 149 with iFlight Succex Mini F4 stack) it twitches and gets warm fast (not hot), it beeps and sings the regular esc tune when i plug a battery in it. The motor in question spins normally if i spin in by hand with no mechanical resistance. Same goes when it's connected to the esc, there's no electromagnetic resistance as well. But when i plug and arm the motors, this particular motor (#2) twitches then spins. And when i apply throttle power, it stops spinning mid-power then makes a new tune by itself. Then the entire thing stops spinning and then makes that esc tune again with the motor #2 making that tune second or half behind the others... What could be the problem with it, sir?

@MCsCreations 2 года назад

Hey Joshua, which is your electric screwdriver? Seems pretty good! I've been thinking about getting the one from Xiaomi, but I'm not sure yet.

@plumpitiful5856 2 года назад

I think the DeWalt gyroscopic is best.

@jimouris 2 года назад

Awesome video. I have a similar situation with a tinywhoop. I swapped the "faulty" motor and it works fine when I plug it into a different location. So that either points to a short circuit or a bad ESC. How do you go from there?

@holgenn 2 года назад

Check the xt 60 plug from the bad vifly. I had the same issue and found out, that one side was off...

@skyweaver3199 2 года назад

Hell of a prop tool there buddy

@flyv3rse753 2 года назад

Wow JB I literally just got this problem, I was out flying and when I switched to the Skyeliner, exactly the same kwad you are showing I had a problem with one of the motors, I don't know yet what it is but I noticed the color in that one is more yellowish as the one in your video. Thank you for posting, I have to figure it out and I should order a new motor. Question, would this motors be affected if flying the quad with a 5s lipo?

@REALELECTRONICSTIPS 2 года назад

খুব সুন্দর একটি প্রজেক্ট

@2toeninja 2 года назад

I'm going through this problem right now with my skyliner and it's driving me crazy. Actually I've had this problem for about 6 months and I've just been dealing with it

@diehardfpv4166 2 года назад

Yo JB! What hand screw driver are you using? I definitely need me one of those!

@ludofevrier5593 2 года назад

Ça c est un tournevis électrique américain 👌🏼😂

@Dosclic98FPV 2 года назад

Fried an ESC on Sunday and it took one of the motor into the grave. Gonna do some rapairs this weekend. RIP P.S. Seems you did not mentioned to check the continuity between the positive and the single pads of your ESC, in my case I saw there was a short on the positive and one of the pads so if I would have connected another motor to test I would have killed another motor.

@Dosclic98FPV 2 года назад

@@mikebergman1817 Yeah, I am still today seeing the cost of the repair lol. It was a Mamba 40Amps not soft mounted and died in full acceleration so maybe all the factors combined took to this point. I also have to mention that it died from the side I took the first and last hard hit back in January.

@ruvyfpv4398 2 года назад

So I fried a motor months ago ordered a few motors and installed the motor and plugged it in and no smoke then I spun the motor up and the motor started smoking again on the new one:/ so I’m assuming it’s a fried ESC? It’s a Diatone Roma F5 Any help would be awesome!

@JoshuaBardwell 2 года назад

That test is in the ESC troubleshooting video linked in the description.

@Dosclic98FPV 2 года назад

@@ruvyfpv4398 Yeah, check for continuity but that is the ESC almost for sure

@bitterrootfpv2207 2 года назад

@@ruvyfpv4398 sorry dude. But your assumptions are correct.

@sricharan7287 2 года назад

Jb is a musician

@DanielDiazQuintero Год назад

Thank you for your video, it's very detailed. However, I would still need some help. I have an SP Racing F3 with a Racerstar RS20A BLheli_S, and I can make all the motors work fine using Betaflight. The issue arises when I try to use the transmitter, as one of the motors starts spinning very fast, much faster than the other three, making it impossible to control the drone. Any ideas on what might be causing this? Thanks!

@FireN2k9 2 года назад

Next video "Motor repair/rewinding" Would be a waste to throw that mechanically fine motor in the trash. :)

@lemonsquareFPV 2 года назад

Agreed! Even though it takes 10 minutes to completely redo a motor I don’t think most people bother, among my flying buddies, it’s just me and one other person that rewind our motors. We are the FPV nerds among the group :p I like how I can change/customize the KV and I try to be wise with my use of resources on this planet. That being said I am lazy and don’t fix them right away if I have a spare on hand, I usually collect a bunch (4-6 usually) and then I do them all at once.

@rtorres3442 Год назад

hey bud great tutorial. I bought a KF101 to start practicing with. One motor wouldn't spin. Bought a replacement arm and still nothing. Swapped the left/right leads on the board and it works. Any idea on what's broken? Is it repairable? Thanks.

@frequentlyfascinated Год назад

Think it would work with those smokestoppers that fail closed? ;-)

@pravyadav5264 11 месяцев назад

Hi, thanks for all the information. I have a Dji avatar and was upgrading to axis flying upgrade kit with new motors, everything went well but at the end the front 2 motors are unresponsive, tried swiping with back one but front still unresponsive, back works fine, any help on this on this please

@petrsovis 2 года назад

Hello Joshua, can you help me ? I just bought Darwin FPV Baby Ape, when I connected receiver (ELRS EP2) and when I connected the battery (it was 2S and drone was 2-3S) it smoked. ESC's circuit (FET) smoked. I measured motor - it has much lower impedance than other 3 and when I spin it (with motor screw driver) I get 1/3 of voltage of others. Could motor cause ESC to burn ? The whole setup is stock from DarwinFPV (1104 $3 cheap motors). Could motor be bad from factory ? Or ESC ? FC+Esc's not cheap on those copters. THANKS ! Love your channel. Petr

@TechnicallyTom 2 года назад

Those motor screws look too long. There’s maybe a millimeter or two of clearance. Ideally the motor screws would be flush with the top of the mount holes. Although there seemed to be some clearance, the inbound motor screws might be touching the wires. The threads could cut through and cause a short. Watch the part of the video where you zoom in on the motor.

@BrownSoloFPV Год назад

What if you get the 3 beeps but not the last two on an AIO board? My tiny trainer just fell out of the sky lol I threw a fresh battery on and just got the first 3 beeps and nothing more. It’s the BetaFPV AIO that comes with the tiny trainer DIY kit.

@nitroxunit1 Год назад

I have a crux 35 elrs and after a crash from bumping the ground in left banked turn and wiping out. Now motor 4 front left pulses spins (spin,stop,spin stop) for about a second and stops with a beep, the other motors spin speeds up with motor 4 spins. also noticed the first arm after plugging in battery it wont aim and ods show cal. To trouble shoot I plugged in a new motor and it does the same. Do you think I messed up the ese in the board?

@Andyblalock Год назад

mine every once in awhile will spin up.. the rest of the time it doesn’t and sounds like it restarts by doing the final two beeps again..

@Airoflyer_fpv 2 года назад

Happen to me 3 times with a skyliner spun into air at full speed ,had to jump In. A bush

@Scibble_FPV 11 месяцев назад

So I have a Darwin Baby Ape v2 and I crashed it in a tree and when it crashed the wires got ripped out of the motor, so I bought a new motor, and soldered it on correctly, before I plugged in a battery I checked it with a multimeter to make sure the nodes where not touching (wich non were) then I powered it on. When I armed it the motor that I had replaced started twitching along with the led. I did the test to see if I had a blown mosfet, but I suggested that I didn’t. When I boot up the drone I can feel all the beeps on the motor. I removed the motor and then tried arming it, and the led flickered still, so it is probably not the motor. What do you think I should do?

@gameboys248 2 года назад

I dont know if you realised, but your XT60 negative wire on the circuit breaker disconnected

@Woodsywoodsy-sj9qy Год назад

So I got a motor & esc that both work on a servo/esc tester but not in the model. I can put another esc & same or different motor back in model & all OK. Put the new esc back in & it twitch/click. Any ideas as this video not really help.