Run a Hard Drive Brushless Motor Without Driver
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- เผยแพร่เมื่อ 27 เม.ย. 2018
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Simple way to run a hard drive motor without driver
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You CAN use motors made as part of the frame - I have several. You simply need to very carefully cut the frame around the motor (ideally with a band-saw) making sure NOT to damage the flex connector that will almost always be present for such motors. Once cut it can be used like any removable motor.
I guess the 4-wire brushless motor has an internal star configuration wiring. So, by connecting the common pin to a DC voltage source and energising the other three pins in a correct sequence can make the motor run, much like a unipolar stepper motor. By using a decade counter with a signal generator, such as a 555 timer the motor's speed can be varied.
Another amazing video. Excellent explanation and original thoughts. That's what i like the most in your videos.
First request : Please never shut down your channel. It is one of the few gems here on TH-cam.
Second request : Always keep your videos like this: simple!! And to the point. With pros and cons of the things discussed out.
I really really appreciate your work.
Keep it up!!
-another tinkerer
Could you use caps to convert the transformer into multiphase one, and then energize all the coils to run the motor at higher efficiency?
Single phase create oscillating magnetic field. You need minimum of 2 phase to have a self starting motor (for synchronous motors). Also, speed of motor will be fixed (synchronous motor + 50Hz).
A start capacitor should work, you may need to play with some different values ranging from say ~20uF - 300uF and suitable AC voltage rating. Placing the capacitor between the floating phase wire and one of the other AC phase wires will result in a phase shift in the current and subsequent magnetic field shift in that winding. Resulting in a tendency for the rotor to favor to move in that direction and thus allowing the motor to start spinning up to near synchronous speed. Different the start capacitor capacitance will give different phase shift angles depending for a given winding impedance. This increased phase shift together with the increase is winding current due to the apparent change in the winding impedance due to the introduction of the capacitor impedance will result in better starting torque. Note though the starting torque will not be very high or as good as having a 3 phase VVVF driver. The added benefit of a PWM drive is good starting torque and variable speed in excess of that attainable at normal mains frequency.
Very nice and useful information, thanks very much!
Thanks for sharing now I know what I can do in my old harddisk
1:48 "In this case we can't use the motor" I beg to differ. We can use the motor o-n-l-y in this case.
His 'this case' meening: the sitruation and not 'the frame'.
@@kjyhh its a joke
Lol!
By adding a capAcitor between ANY PAIR AND Supply the other two it will spin by itself associated with vibration my innovative friend
How is it possible only by vibration? Thanks for the idea
@@franciscoe.parulla5761 same way a single phase induction motor needs a capacitor to start. And switching the legs connected to that capacitor will change the direction.
you are right
Starting capacitor like a washing machine motor but on a micro scale. 👍
A washing machine motor is a brushed universal motor. Not an induction motor.
Very COoL... Beautiful little motors! Curious what the wattage draw is spinning and "not spinning". Thank you for the video.
Should the supply be 12 VAC maximum? And I was wondering if these little motors are basically induction motor without magnet as a rotor but more like a squirrel cage rotor?
I've added a speed control using a sine frequency generator on my phone wgere you can adjust the frequency. I plugged my phone audio out into an amplifier which then, I connected to the motor. But after around 150 Hz, you start getting harmonic imbalances and the motor comes to a buzzing hault, because you are usung only one phase.
I did this also to my stepper motor
I swear my Mother In-law has a few of these Motors in her mouth, Once she gets started, there is no stopping here :o/
LOL
Hahaha
🤣🤣🤣🤣🤣
😂
How not stop can you share me that's wiring ( 3 pins)
The reson why u must give a push is because the alternating current only flows to 1 of the coils. If it was hooked up to a driver the driver would fire the coils n,s,n,s - and so on deleting that push from the beginning and have much more power and efficiency
Thanks, very interesting.
Great and informative video. Thanks for sharing.
Can you in any way make the speed adjustable? And is I put a 12” platter on to the bearing can I get to it speed at 33 1/2 rpm ?
Thanks You Sir!
You did it in KISS teaching principle.
You didn't give DC supply. Your supply was AC
Can you do a video on Charging and discharging caps in series and parallel under different loads?
Let me think about it
did you try with the center tap transformer for 3 terminals would it start automatically?
Would adding a capacitor like copying the idea of a usual single phase induction motor help to maybe allow self-starting? Also is it possible to do this even?
Yes.
Un capacitor no podría funcionar para "evitar" darle el arranque manualmente?
Thank you for narrating your video. so many foreign videos don't.
how about a wave generator??
making a simple centrifuge with this right now, thankyou
Also.. glue the magnet to motor to make a stirbar spinner
thanks for sharing your videos 😇😇
What is the point or possible usage if you have to give initial run? The scratch your back maybe?
One question Sir: Do the motors start themselfes if you add additionally a capacitor at another pair of wires?
QweieTop
No
a cap between the freewire and + or - wire can run the motor without touching it forward and backwards if you change + or -
thank you . very informative
actually motors that are a part of the frame are more usefull. if you tighten it with a vice near the shaft holding the bearing the thin aluminum cast will break and the rotor stator assembly come off in very compact form. after that you can pull out the shaft to rewind the motor if you want and in my case place 3 hall effect sensors. using this method i converted 20$ rc car into brushless rc car
Depending on the size of the magnet you could probably use a PC fan controller as long as it has PWM enabled. Not sure if this would work tho? Maybe three phase motor would work. Theres always three hall sensors in that case unless it uses current pulse to trigger the next phase instead of hall sensor? I wonder if it would run with just a pwm pulse square wave or does it need zero crossing? Gues ill find out. Im playing with one now.
Connect these to a low voltage 3-phase power source. This makes it a AC synchronous motor.
and what is that low voltage please
@@jumcopper anywhere from 6 to 12 volts. ( or about 9 volts or so RMS per phase.)
I have a 9 volt DC transformer. Is there a way to make that work?
Nice video .. I just loved the unscrew's sound 😁
Thanks, good vid as usual, really informative. Could you show how to set up a simple driver circuit/s to drive these motors. TF sharing.
th-cam.com/video/TeZXXDoEGuc/w-d-xo.html
Use a brushless controller from a model aircraft and it will self start and you can select the speed by injecting a pulse between 1 & 2 mS (simple 555 circuit)
th-cam.com/video/TeZXXDoEGuc/w-d-xo.html
it still requires that part so either way you still have to buy something or find it inside something....the same as finding a small speed controller and parts inside something but on ebay you can by the parts needed to work for like only 3 dollars for small motor like that.
In fact brushless motors work with AC current that come from electronic cuirct and control of speed by different frequency. There for its work with AC currnt that come from transformer but its slow because the 50 or 60 hertz it's so low frequency for this motor
This is very interesting, I would like to know how to run the motor of the scanner laser assembly in a laser printer, the one with the octogonal miror. Please help !
First determine if its a stepper motor or not. Motor may have some identifier.
Chuck a big ass capacitor across to the 3rd lead, should work like a single phase induction motor (it's how combi boiler motors work)
Please tell me this mortor oparating voltage and amp .but not working my 4 pin hard drive mortor .
Thanks for this video i am going to make video on this
Does anyone know what companies have removable motors in their hard drives?
thanks sir....
do they chain together?
So what are some potential uses for these as a stand alone motor considering the power to weight ratio?
Can find use in gemology and spectroscopy on the cheap.
very helpful, thanks
How does the hard drive start the motor off? Can't you use that system to get the motor going without using your fingers?
Now I know thanks for sharing
Great video re-use part and misc components is the future of humanity
thanks!
Existe alguna manera de ajustar la frecuencia del transformador?. Se me ocurre que sería útil para una base giratoria.
You’ll ned a motor controler
Does it work with a 9volt transformer?
Thank you
oh...
fantastic!
If you want a more reliable motor you can just connect a capacitor up to it and put it on a different pair of ac line creating 2-phase ac instead of just one
How much require voltage to run
What needs to be done to get more AMPS with the same setup?
If you charge a capacitor rack, wouldn't you be able to pull HIGH AMPS from the CAP?
Yes but only for a limited period of time
This is the tricky part I always wanted to know how to calculate...
How to come up with the time a different load can stay above certain voltage while discharging at certain rate? So that on the other side you can pump volts (with some voltage pump) at some rate so that you can keep the discharging cap full at all times... Are you with me? Thanks!!! I LOVE your videos...
Awesome video...
ok thats cool but imma need a potentiometer cuz i want a 7200 rpm fan just to see if it works. then imma take a sas drive and make a blowymatron
can we use 12v adapter ?
Saudações LS Ludic Science. Saudações a todos. Interessante. Deve ser possível fazer esse motor girar a mais de 30000 RPM. Tudo de bom.
can you please make a video on how to run hdd with laptop charger adapter
Thanks.
A question: I have a HD that seems dead. You think that changin motor i could give new life to it?
95% of the time is the driver that fails, not the motor
@@ludicscience you're right. i have to change pcb ..
thankyou very much!
THANKS ALOT
Good information
This metod îs very good to test the motors
Czemu nie pokazałeś jak lutujesz przewody.
Can tell how to remove laptop HDD motor ?
ooooo.... Ya te reconocí... lueguito que escuche tu voz.... like
how about RC controlers with those motors?
Got a link to the transformers please? Cheers bud ;)
Tanya om, kenapa sambungan kabel ke motor tidak diperlihatkan ? Karena banyak video yang tricky, jangan-jangan dibelakang nya sudah diganti motor ?!?
Setelah disambung kabel, jangan hanya bagian muka yang diperlihatkan. Tunjukan bagian belakangnya untuk meyakinkan bahwa motor masih tetap aslinya . Terimakasih.
Salam semangat. Saya senang dengan video2 LS.
Motor DC input voltage AC very fun.
It is not dc motor you can make it to do using controller original or make it you probably don't know nothing about ac dc current any thing you can make it work using electromagnetic induction and pulse
Thanks for the experiment. Why not try using a HV starting capacitor to get it started? Maybe use a microwave oven capacitor.
Joseph Nicholas maybe you could get it started with a 20v high capacity cap and a rectifier, but considering the poor reliability and torque you get I guess it's much easier to buy a dedicated chip.
Valuable video nonetheless. Could turn out useful in a pinch.
Why the HV capacitor? the motor is quite much made for 12V and a capacitor wouldn't help you get it up to speed, it's a synchronous motor and not asyncronous induction motor where you can have it slow-starting.
The AC would need to track the motor up to speed for the start to work. Or it must start on some few cycles or be spinning the right speed.
Can these motors be used to generate electricity?
Yes
can i make it auto runing?
but why does the motor start within the hard drive without an initial push?
because it uses an electronic driver
Thanks..
why did not you use diodes to get a pulse dc power supply to feed the motor? and feed 2 wires with 50 hz pulse supply, and anothers diodes as free weels protetions?
use capistr wuth 3 terminal motor and it will increase speed and will do self start
Tnx
What is the voltage and ampier of transpormer that you are used
12v 120ma it mentioned on the transformer that he used.😅
can you turn those motors into generators?
Yes I have a video on that
do you have a link?
thank you
I don't have any esc, transister ,transformer nothing can I start my hard drive motor of 4 terminal
I have this model 1:49 , no way to take off the metal disk, it's like there's a hidden screen
It can spin by itself by using a Capacitor in every wire or can use its original harddrive's ESC.Powering the PC tower harddrive in 12v makes it spin by itself without the help of the computer's processor.
well done . Next tutorial .... how to connect an ESC/DRIVER
Well.. the basics would be: find the 3 terminals with equal resistance between them, and connect the ESC/controller output to those!
How to mach volts dc
i don't get it ... why is other sites using a 30a ESC brushless motor speed controller if all you did was hook up 12 volts to two of the terminals? i only know enough about electronics to get my feet wet so I'm guessing I'm missing something here ...
because by this mechanism you will not gain speed.. not gain torque..
th-cam.com/video/n1h4ju7vQuM/w-d-xo.html&lc=z22ktzeyrvabgjmzo04t1aokgzlox3gnkzscyogc0c5ork0h00410
Those are the 3 kinds of hard drives that I've only seen in an original xbox
be nice if there was a way to reuse the controller board, perhaps in a maintenance mode. ah well. lots of nice parts in these
What is a 12 volt transformer?
It is best to simply say what are you supplying to the motor with exactly. 12 V AC, 12 V DC or...… ?
It would provide 12v ac at 60hz in the US
@@hyperion112 I can't even begin to describe how I feel about choice of words used, especially in science where word accuracy is more critical than any other area.
Here for instance when I hear the word transformer, it instantly and subconsciously to me it implies going high, going up. To transform. It is how it is used in everyday language. Imagine telling that something has transformed. That person has definitely experience some sort of transformation. he seems much more disciplined etc. But in science it is an outrage. And I have no desire to bore you with writing a long a narrative. Just one more for the road. Particle spin, spin up, spin down. Big baloney bullshit.
The AC somehow acts like the pulse?
It will not run in 7200 RPM ?
If it runs on only 50HZ frequency, that means it have only 50 rotations/second
How much volts of energy?
*12volts suitable*
0:56 that's the HDD for the XBOX original
Oh god...
I'm pretty sure they all were.