<p>This all sounds like it's the motor side of the ESC, not the power supply side. If the ESCs aren't rebooting, then they aren't browning out and your power supply is fine.</p>
<p>Check motor connections to the ESCs (how is your soldering skill?), and check the motor winding screws. Putting too long of a screw into a motor can permanently damage it, and cause this symptom until the motor is replaced.</p>
<p>Test each component individually if you can. Get a motor that appears to work, and try it on each ESC. Then, get an ESC you know works, and test each motor on it.</p>

CC BY-SA 4.0
2021-07-23T13:24:10.487Z
2021-07-23T13:24:10.487Z
Brydon Gibson
<p>I made a 3D-printed drone body and attached some MT2204-2300kv brushless motors. I have the standard yellow 30A ESC for each of the 4 motors. I also have an Arduino Uno running YMFC-AL and a FlySky FS-ia6b receiver. I have a FlySky FS-i6X controller. Lastly, I have a 3s2p, 12 volts, 2.2A LiPo battery powering it all. It is a 50C battery.</p>
<p>When I set up everything and power it on, all the motors make the arming tune and arm properly. Then when I give it some throttle, some start spinning while the others just stay there and vibrate. Occasionally, I can get 2 of the motors to spin up but I have to stop throttling and give it power a few times. I don't have anything connected to the shaft of the motor. I have fully charged my battery so I don't know what is going on. I am guessing it is a power issue but I don't know. I think it could also be the mounting screws at the bottom because somehow if I loosen or tighten them, the motor behaves differently and sometimes, starts working. I think this because even if one of the motors spins up, as I increase throttle, it sometimes speeds up and sometimes slows down. It is very unpredictable. If anyone has a solution or something they want me to attempt, I would appreciate it a lot. If you need any more information about the setup, please comment and I will provide it.</p>
<p>Motor: <a href="https://www.ebay.com/itm/224473754682?hash=item3443adac3a:g:iOMAAOSwo35grL03" rel="nofollow noreferrer">https://www.ebay.com/itm/224473754682?hash=item3443adac3a:g:iOMAAOSwo35grL03</a>
ESC: <a href="https://rads.stackoverflow.com/amzn/click/com/B077Z7LWGQ" rel="nofollow noreferrer" rel="nofollow noreferrer">https://www.amazon.com/powerday-Brushless-Controller-Helicopter-Multirotor/dp/B077Z7LWGQ/ref=sr_1_6?dchild=1&amp;keywords=30A+esc&amp;qid=1623632107&amp;sr=8-6</a></p>
<h2>Note: These links are not exact because I bought this stuff a few years ago.</h2>

CC BY-SA 4.0
2021-06-13T17:10:48.503Z
I've had a similar thing happen when an ESC is underpowered. It could also be the mounting screws; make sure they aren't long enough to touch/scrape the motor windings.
Jacob B
CC BY-SA 4.0
2021-06-13T17:22:24.957Z
Yes, I shined a flashlight under the motor and the screw didn't even come out the other end.
DragonflyRobotics
CC BY-SA 4.0
2021-06-13T17:22:54.420Z
I can use a bench power supply and feed it 12v at 30A to test it. Is that a good idea?
DragonflyRobotics
CC BY-SA 4.0
2021-06-13T20:48:11.057Z
The power supply idea could work to test if the motors are the issue. You can test each motor to be sure, and if they all work, it could be a malfunctioning or underpowered ESC.
Jacob B
CC BY-SA 4.0
2021-06-13T20:49:57.393Z
Also, could you provide links to the battery, ESC, and motors that you're using? That might help with finding the issue.
Jacob B
CC BY-SA 4.0
2021-06-13T21:14:37.770Z
What ESC protocol are you using?
Drones and Whatnot
CC BY-SA 4.0
2021-06-14T00:52:38.003Z
I don't know the ESC protocol but I can try and find the links to the electronics.
DragonflyRobotics
CC BY-SA 4.0
2021-06-14T00:56:37.307Z
I edited the question with the links!
DragonflyRobotics
CC BY-SA 4.0
2021-06-14T11:41:13.233Z
This is common to happen when the ESC is not configured with the minimum and maximum limits of its control. So even, after giving it maximum power and returning, the next time it starts to spin. I suggest configuring each ESC individually. [See](https://www.superandcheaper.com.au/a/brushless-car-esc-throttle-range-setting/266).
Arcaniaco
<brushless-motors><lipo-batteries>
All motors vibrating but not spinning?
DragonflyRobotics
# All motors vibrating but not spinning?

(Asked by: username_0 on 2021-06-13)

I made a 3D-printed drone body and attached some MT2204-2300kv brushless motors. I have the standard yellow 30A ESC for each of the 4 motors. I also have an Arduino Uno running YMFC-AL and a FlySky FS-ia6b receiver. I have a FlySky FS-i6X controller. Lastly, I have a 3s2p, 12 volts, 2.2A LiPo battery powering it all. It is a 50C battery.

When I set up everything and power it on, all the motors make the arming tune and arm properly. Then when I give it some throttle, some start spinning while the others just stay there and vibrate. Occasionally, I can get 2 of the motors to spin up but I have to stop throttling and give it power a few times. I don't have anything connected to the shaft of the motor. I have fully charged my battery so I don't know what is going on. I am guessing it is a power issue but I don't know. I think it could also be the mounting screws at the bottom because somehow if I loosen or tighten them, the motor behaves differently and sometimes, starts working. I think this because even if one of the motors spins up, as I increase throttle, it sometimes speeds up and sometimes slows down. It is very unpredictable. If anyone has a solution or something they want me to attempt, I would appreciate it a lot. If you need any more information about the setup, please comment and I will provide it.

Motor: <https://www.ebay.com/itm/224473754682?hash=item3443adac3a:g:iOMAAOSwo35grL03>
ESC: [https://www.amazon.com/powerday-Brushless-Controller-Helicopter-Multirotor/dp/B077Z7LWGQ/ref=sr\_1\_6?dchild=1&keywords=30A+esc&qid=1623632107&sr=8-6](https://rads.stackoverflow.com/amzn/click/com/B077Z7LWGQ)

## Note: These links are not exact because I bought this stuff a few years ago.

**Tags:** brushless-motors, lipo-batteries

> **Comments:**
> **username_1**: I've had a similar thing happen when an ESC is underpowered. It could also be the mounting screws; make sure they aren't long enough to touch/scrape the motor windings.  
> **username_0**: Yes, I shined a flashlight under the motor and the screw didn't even come out the other end.  
> **username_0**: I can use a bench power supply and feed it 12v at 30A to test it. Is that a good idea?  
> **username_1**: The power supply idea could work to test if the motors are the issue. You can test each motor to be sure, and if they all work, it could be a malfunctioning or underpowered ESC.  
> **username_1**: Also, could you provide links to the battery, ESC, and motors that you're using? That might help with finding the issue.  
> **username_2**: What ESC protocol are you using?  
> **username_0**: I don't know the ESC protocol but I can try and find the links to the electronics.  
> **username_0**: I edited the question with the links!  
> **username_3**: This is common to happen when the ESC is not configured with the minimum and maximum limits of its control. So even, after giving it maximum power and returning, the next time it starts to spin. I suggest configuring each ESC individually. [See](https://www.superandcheaper.com.au/a/brushless-car-esc-throttle-range-setting/266).  

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## 1 answers

### Answer by username_4 on 2021-07-23. Score: 2

This all sounds like it's the motor side of the ESC, not the power supply side. If the ESCs aren't rebooting, then they aren't browning out and your power supply is fine.

Check motor connections to the ESCs (how is your soldering skill?), and check the motor winding screws. Putting too long of a screw into a motor can permanently damage it, and cause this symptom until the motor is replaced.

Test each component individually if you can. Get a motor that appears to work, and try it on each ESC. Then, get an ESC you know works, and test each motor on it.


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