Why Do Quadcopter Motors Spin Up By Themselves With Props Off?07:22

Hi Joshua, thanks for doing all the videos.
Although your answer is correct, it is not complete. While it is true that the motors spin up because the PID controller is reacting to noise, it is not strictly speaking the PID controller, rather it is the I-part of the PID controller. Motor spin up is a form of “drift” and when you integrate noise, you get drift. You can demonstrate this by setting all your I-terms to zero – if you do this you won’t get motor spinup.

Dont forget about the effect of having airmode enabled. The FC will read a slight stick input and offset the throttle accordingly (all be it momentarily) which will exaggerate this effect.

Hey Joshua good video but FYI… I did two builds using betaflight 301 with air mode but while I’m flying the motors started to increase speed and I could not control the throttle but everything else was fine. So I reprogram the quads and I took off air mode and the problem was gone. Then I put air mode back and it did it again. I think their is a bug in bf301. Have you come across with this issue? Thanks for the videos 🙂

And the end points and Trims? Sometimes if the channels aren’t at 1500 on center will make the pid loop tried to compensate more and more.

Hey Josh, thanks for making these videos, i’ve watched all the ones relating to the eachine wizard and betaflight. Could I pick your brains for a minute?
I ordered 2 wizards both RTF, one of them has this motor issue but when the props are on, the other one does not show any LED’s on the bottom and i’m not getting any power to my reciever. Could it be a FC issue or PDB?

Hi … You are doing a great job, it helps a lot of enthusiasts!

searching your video list for a video that could help me solve my problem, I came across this video which is very reminiscent of my problem!
My drone behaves exactly as I try to lift it up! Engines start to spin at just faster and faster speeds and Quadcopter is very unstable (rocking)
Components FC-CLraicing f4 V1.6 ESC-BLheli 12A
Motors-DYS be1806-2300kv
ESC / Motor Protocol- Oneshot125
ESC-calibrated!

also watched
And many more!

wouldn’t you please tell me the approximate settings from where i should start tuning!
I’m a beginner and still have a hard time understanding it!

You know you’re a noob when you need to watch this video!

All routes lead to JB. My newb nerves and insecurities settled once again. Thank you.

dear sir
I am making a drone with 4 motors with KK 2.15 flight controller and three motors are running at good speed but one motor that is starting motor is running at more than speed how can I control the speed of first motor please help me sir

2/4 of blades of my copter kept on spinning until i pulled my baterries off. what should i do?

What about when the props are installed, quad is held down to work bench with your hand or straps. In acro or air more, which ever you want to call it, after throttling up then back down to 0 throttle, the motors are still spinning near full speed. DOES NOT do it in stability or horizon mode, acts completely normal to throttle input.

That makes completely sense now.. LOL thanks buddy, you help me at 2010 <- new drone pilot.

Thank you thia does help. Only diff is mine speed up super fast like crazy fast but ill try what you said thank you so much your videos are the only thing on here that help me. I will let you know back that your right. Lololol

OMG do you know how many hours I’ve spent wrestling with this,why didn’t I watch your videos. Ok I’m going to unplug all of these coptor plugs and watching everything you’ve published on line. good lord I need a helmit and a cork to put on my fork I am officially mentally handycapped…..Oh thank you Mr. Bardwell please excuse my frustration.haha

Hi Joshua, on the bench test I throttle up motor started to spin and go faster and faster that I understand the issue on video. But when I throttle down to zero, motor is still turning as fast as before. It does not calm down.

Thanks man. My new buzz did that and i almost freaked out.

Hey there first of all thanks for all infos it realy helpfull. My problem is if u may help, I have just build Eachion Tyro119 drone and connect Flysky i6x transmiter and the İa10b receiver over PPM connection and have done all betaflight settings everything seams fine on beta but vhen ı connect the battery 3s 4s the trottle stucks and motors doesnt stops vhen I pulled down the trottl, I have tried bouth with the props on and without the props all the same reaction. Please help. And also when ı move the roll stic suddenly motors stops suddenly and starts after arming again.

Joshua Bardwell
Yes unfortunately I have already seen your video about flip on take off and follow all the instructions and check many many times but but it’s not good ?

Sorry to say but it is one of those four things. It always is :-/

Thanks a lot!!

My throttle does the same but it does it with props too,it has like 5% throttle idle and when i push like 2% it goes full throttle.

Props on upside down?

Hey could you help me?

My drones motors will spin (when connected to battery) without me wanting them to and without being connected to a controller.

Thanks

Thankyou!

I been stuck for 3 days I bought a tinyhawk 1s and it was btf I had no clue wot I was doing or buying I got fpv goggles and a controller d8 and it bind I have played with beta flight and only front 2 motors spin I have tried everything my thinking is it think it a plane not quad I checked resistance impedance all seem all ok they all approx the same another weard thing rear to props are side on the board not front or back the esc but one front one back is the back so it must be firmware I’ve updated it out cli mockingbird on it still help anyone know why just front 2 spin not back please I dont want to buy another

Thanks, this has answered my question exactly. I will go airborne with my first build tomorrow.

What if it does exactly that but with props?

Hi sir thanks for your nice video can you help me with quad after upgrade with 4.1 beta flight if i give full trottle it will not come back to normal idle in other words if you saw in beta flight the 4 motor not the same speed ., Hope to read this ., Your fan

Is it normal when you arm your drone with props the motors start up and they always spin nonstop
And when you try to land the drone jumps up and down from the ground.
Drone tinyhawk 2 rtf kit
And when its upside down the motors go full throttle.
Edit:Fixed it by disabling airmode in configuration tab
Hope it helps!

I think YouTube is spying on me because I was just talking to my Dad about this problem and it suddenly just popped up on my recommended

You are the king. You have the all answers. Thanks.

you the man thanks for this video i was feaking out

I didn’t think I was a newb anymore, but I fell for this newb mistake. This is about the fourth or fifth quad I’ve built, but the first time that this has happened to me.

I had just finished setting up my first Betaflight 4.2 quad and the motor revs would slowly creep out of control once I throttled up on the bench (only when air mode was on). I decided to try with props on, but it was late, and by the morning I was worried about a flyaway and decided to play it safe. I reverted all of my settings, thinking I’d messed something up moving from BF 3.x to 4.2, but the problem wouldn’t go away.

Finally found this video and then went flying :-).

Thanks again.

how do i fix my drone bc when i arm it n give it justice n stop i keeps going none stop

You are the man Josh

Once i turn on airmode it just wants to throttle up crazy

Thanks. This video still helping NOOB 4 years later. Thank you.

Thank you Joshua!

Helped me today

I absolutely love no matter what question you have about drones and you type it in to Google, Bardwell has a video on it! You sir are much appreciated.

And it’s doing exactly what u just showed. I dont get why my motors are do this and I’ve done everything u mentioned.

in the video you didn’t give thortl to the maximum, if I give thortl to the maximum, then this button has no reaction of any kind the drone flies … how do I lower it back …? so .. you push thortl until half is ok .. it reacts back but if I pushed until over half … ready it hurts and thortl doesn’t react anymore … how do I lower it?

My quad did not throttle down on take off and I had to disarm using switch used air mode in cc3d it fell back to the ground it went 100 feet till I disabled it

When I give full throttle it’s not rotating all motor what’s the problem

It’s beeping 3time but all three motors are not rotating at the same time when I give 40% throttle is this because of acc bubble which is not at center point

Im using betaflight i have multiple matak systems fcs that makes the throttle surge on my fcs and wont comunicate to some of my escs for some reason but some other brand fcs i have no issues

Thanks ?

Is this a setting in betaflight and would it be practical to turn it off if there is? I know it’s to help fly it easier but I’d rather be in control of it rather than it speeding up on it’s own.

Three or four years later your video has proven to still be a quality answer. Absolutely for me and I’m sure for many others as well.

Just answered my question. Thanks!

Hey don’t know if you have a video for this but when I arm my quad and put it in air/arco mode it jumps off the ground and if I Drop throttle to do any kind of flip it throttles up like a power loop

thank you

2020 and still helping you the man

Thankyou sir

also have Rewatched this many times so i did follow the instructions. 🙁

Thank you M@STER Teacher! ¶ :-)–~

Sei un grande 🙂

Spent four hours trying to figure this one out….. THANK YOU!

4 years later and it helped me. new to FPV. Thanks for the explanation!

Omg I was just freaking out lol. I’m new to this and I just killed a battery(6s) running beta flight and biheli setting up my controller switches and checking everything out, so I watched a JB video on charging lipos and I was lucky because I have the Hota d6 pro charger and it charged each cell perfect to 4.2 volts. I will keep an eye on it for a while to make sure its safe(it will sleep out side tonight lol). Then I don’t know why but my quad wouldn’t arm( it was working before the battery died) and the switches worked fine in beta flight, so I watched a JB video and reset all my rxrange parameters in beta flight and now it is arming again( I still don’t know if it was because of the dead battery?). So now I’m happy, until I gave it some throttle and the motors just kept speeding up and I lowered the throttle but it wouldn’t slow down so I had to disarm it( props are off) so now I watched this JB video and like he said you won’t get it completely and he right but I trust him. I haven’t flew my quad yet, I’m still waiting for my V2 goggles to come in, but I will try a line of site flight soon to make sure its ok:) I did buy 90% of all my gear from his links so he would make a little something from the sales it was the least I could do, after all I did learn something today and yesterday and the day before that lol. Keep up the great work JB, I don’t think I would have gotten into this hobby if it wasn’t for you:)P.S. I do love your JB parallel 6s charging board.

YOU ARE THE GUY…! THANK YOU SO MUCH.!

Glad i just found this

My quad lifts of the ground, then goes to an infinite throttle and I can control the throttle on my controller. I’ve watched this video and watched the flip on take off all is good. It’s just the fact the throttle seems stuffed

My quad does this but with the props on. I give it the tiniest bit of throttle and it shoots into the sky uncontrollably and at max power. I’ve flown other racing quads so I know it not overpowered (its just 3s). Any advice please??

@Joshua Bardwell I’m pretty sure I selected the non reverse function, but I will double check. I’ve just changed the configuration from multishot to dshot600 and it seems to have helped the spin up problem but now it oscillates so much it can’t fly. Would this be really poor PIDs? Also thank you so much for replying

My. God. I’ve spent ALL DAY on this issue on my first ever build. Even gone through a lot of your tutorials in general about Betaflight, OpenTX, drones in general, etc. Could not solve the issue…until you explained why it was happening. Just tried actually flying it, hovered perfectly and promptly flew it straight into a wall 🙂

I have one which was occasionally behaving just like that WITH the “appearently normal” props on.. it’s not Filiping but went vertically stable until it hit ceiling, or disarmed. It did that when i Throttled up until certain point, it went up u stoppable even if i lowered Throttle. Is it broken FC or something wrong with props/frame ? I noticed that it did that more often when my battery was fully charged. It sometimes jumping when idle, just like props off

Thanks Joshua! I the newb was in beta flight this morning and continually learning getting familiarized, this very topic happened. The main worry was that I would throttle up and then back, but the motors would continue to spin up to near max. I then hooked up another fpv and it happened there too, so I figured there had to be a connection. When I googled this was video was at the top of the results and now don’t feel so worried.