Electronic Basics #18: DC & Brushless DC Motor + ESC

[@vidm96]

Very nice and informative video. Could you perhaps also do a similar video on high-power LEDs and constant current drivers?

[@greatscottlab]

+vidm96 I did a basics video video about led already. And you can find a design to a constant current source in my HACKED! Laser video.

[@proyectosledar]

nice video. adios amigos

[@nico8273]

+Proyectos LED Con que vos tambien lo ves ? Jajajaja

[@VeteranTuner]

Your speed calculation for the switching frequency, depends on the pole pairs. Calculation: electrical angle / pole pair = mechanical angle Your big PMSM has 4 poles (N+S, N+S) so 2 pole pairs therefore the factor ~ 2 The small motor, PMSM has 7 pole pairs so 14 magnets inside, right ? ;) The fact with the KV story is correct!

[@legominimovieproductions]

I need a brushless motor that can provide a high torque (>5Nm) at rpms between 1 and ~300, would a bldc motor be good for that? My current choosing is a NEMA34 stepper

[@MYNICEEV]

Awesome.

[@jeremybaeyensify]

Hey, I have a question. I want to calculate how a certain motor size like a 5055 motor with 340kv. How much torque it delivers rpm is like you said very easy. But I have no idea how to calculate do you have some material so I can find out? Like does it work with the induction law The higher the current the more torque it makes? Because from what I've read is that a 6350 VS 5055 the first one gives more torque because it has a bigger stator. (they have the same kv rating.) but how can I calculate if I have let's say this amount of current at this voltage with this amount of kv and x size of motor. Rated to this many watts. How much Newton meter will it deliver. I want to do this so I can determine my optimal gearing ratio. Because I know how large the load is.

[@jimmybleron4700]

please do a tutorial on ECS's! there isn`t a good one on youtube yet ;)

[@scraphead5479]

So would it be possible to run a quadcopter with bldc motors from hd or dvd drives?

[@mr.simulator4724]

scraphead yes

[@luongmaihunggia]

RPM stand for round per minute if you are wondering RPM tell you how many rounds it spin per minute

[@adityaagarwal6719]

from where did you bye these motor

[@TheMultifun]

Sehr cooles video!!! Was hälste eigentlich von Flynn Kliemann, fallst du ihn kennst?

[@greatscottlab]

+Don Grille He is awesome.

[@soonchenglew2694]

hi greatscott , i recently brough a 1400kv brushless motor and 30a hobbywing (a china company ) , i searched online and i found that we actually can use arduino servo library to control the brushless motor , i followed their instruction but it didnt works, the motor is just beeping but it didnt turns , is it the frequency from the arduino isnt match with the frequency that the esc wants, if so what can i do , i didnt have a brushless motor controller and i didnt havent a oscilloscope to see the frequency , i am a beginner of electronics , pls help me

[@greatscottlab]

+Sooncheng Lew Take a look at my longboard project. There is code you can use.

[@soonchenglew2694]

+GreatScott! ok

[@soonchenglew2694]

+GreatScott! i tried ur code , it just didnt works for me , then i change your code a little bit which i changed ESC.write to ESC.writemicroseconds , the motor will only run when it was between 1600 - 2000 microsecond , but seem it is the full speed of my motor

[@p1nesap]

Best electromagnetic brushless motor analysis.

[@yolimarlara5412]

the best results that I have ever had was by using the Gregs Electro Blog (i found it on google) definately the best info i've followed.

[@renekenshin6573]

Excuse me Sir, how can I support you in Patreon? Your videos are great and I like you to make more for us electronics hobbyist :D

[@sensiblewheels]

Please visit his channel, About .. click on 'support me for more videos' .

[@greatscottlab]

There is also a link in every video description.

[@stefanbramel]

GreatScott! is that True that your brushless motor has more than 7000 w for me sound this unrealistic

[@cesargarcia8647]

Stefan Bramel

[@nightmareinaction629]

Stefan Bramel yes that's true there is also higher kilowatt ones the have like 10hp they are like 8kw but with a mutch higher voltage like 60 or 70v

[@Mirandorl]

Your videos are superb :) No academese ("the flux cutting is propprtional to the cross product of the lagrangian transformation which as will be obvious on inspection is the second order differential equation of mah butt"), engaging style which is fun to listen to, and obviously a huge amount of knowledge behind it all :)

[@danieltabrizian]

You aesome m8! Can you please from now on put links to conrad purchases too? They are handy for your dutch/german viewers

[@greatscottlab]

+daniel tabrizian I don't like conrad. I stick with Ebay or Amazon.

[@lukasnoels]

you can easily purchase from ebay and amazon in those country's

[@gammalikker]

+Lukas Noels (LN2S) not if u dont have a credit card

[@lukasnoels]

GaMMaLiKKeR​ who buys from the internet without a credit card?

[@greatscottlab]

***** I never had problems with parts from china.

[@jeremymaclou]

Hi, Thanks for this video. It's definitely helpful. I'm trying to build a 3 axis gimbal for my camera and wanting to use the brushless motors for it. What would you recommend for something like that. Or if u can make a video about making a 3 axis gimbal

[@questionm2786]

can you make a video on how to make a drone?

[@greatscottlab]

+Kyle C It is already on my to do list.

[@goldenhesus64]

+GreatScott! Omg yes.

[@noahmarcum]

ditto

[@Dannyboy420ism]

great video bro,quick question would stacking mosfets on my ESC work to make it more resistant to burning and would it make the motor stronger?thank yoy

[@AsitorCorporation]

It sounds like you're saying "connected in serious"

[@NiCadHeliPilot]

Heheheh. You've earned yourself a new subscriber. =^/.^= !Left-handed geniuses unite

[@barirwin8559]

me too

[@peterlane5006]

Can you make a video on the reverse process... like a wind powered dynamo to capture useful energy - maybe charging a battery?

[@zootytheduck4800]

+Peter Lane it's the same thing. when you do the reverse it is called "electromagnetic induction" if you want to look it up.

[@UberAlphaSirus]

you need a 3 phase diode bridge to convert it to dc.

[@UberAlphaSirus]

+Sirus six diodes

[@peterlane5006]

+Zooty The Duck - Is it? So when you spin a brushless DC motor you'll get useful current out from the ESC? I don't think so ;-) So I'll rephrase my question - perhaps a video on using a brushless motor as a generator etc.

[@peterlane5006]

+Sirus ok that makes more sense - but wind does not blow at a constant speed so something would need to account for high and low voltages... now I'm stepping outside my limits...

[@Candelaresearchcenter]

Brushless ESC systems basically create a tri-phase AC power output of limited voltage from an onboard DC power input, to run brushless motors by sending a sequence of AC signals generated from the ESC's circuitry, so wrong title,,

[@randomstuff-wg6nj]

hey I Know this is dumb and will destroy my motor and gears. but i got a rc car with a 390 brushed motor. that motor can pull my sister (65lbs) on a skateboard but i Want to upgade the motor so it can push me(127lbs) what kind of motor shall i look after ? is the t (turns) in the motor importen is it the torqe thats importen or the rpm or shall i go for a brushless setup?

[@h2o-fpv623]

Very good video I always take time to watch them is a very good information thank u for keeping us informed sometimes i forget and I watch the videos and I keep going on with my projects.

[@krisztianszirtes5414]

I was searching for this a few hours ago... Awesome speed delivery my friend! What's your secret? I was digging up brushless motors from my bin literally 3 hours ago :D (ps. the KV value means RPM/Volts, e.g. KV100 is at 400 RPM at 4 volts)

[@Surferant666]

Im a little confused. So its a star winding with a centre tapping... Where do you connect the positive and the negative current feed? and where does the yellow control wire for the windings connect?

[@janudagamer2.089]

Oy pagal hindi Bhasa me video banata na

[@qgruschkof1518]

Where doas the Power for the Arduino comes from? Can I connect it to the Batterysystem from the ESC or did I have to use a 5V Signal?

[@DirectorAntify]

Really liked how you approached explaining motors, hope you continue to do educational vids like this

[@chepar20]

Dear Scott Hopefully you get to read this message. Ive seen in most videos that bldc motors are powered with lipo batteries, surely because of the discharge rate of the battery. I am new in the subject but I would like to test bldc motors powered with an adjustable dc power supply rather than lipos. My question ir regarding the current. Most 100EUR Lab PS outputs only 10A and 0-30V 100A PS costs more than a 1000EUR. Will I burn my PS when the motor is loaded or at start? I am missing something here? Are batteries in consecuence the cheapest way to power bldc motors? I hope you can help me out here or if you could clarify this in a video would be awesome!! since I believe there is nothing concrete about this in youtube. Keep it up! Ich habe vor 2 Jahren in BW studiert. Ich wusste nicht, dass wir praktisch Nachbarn waren xD 70372.

[@EnhancedNightmare]

I wanted to power custom cooling fan for my room. I have a large 20cm wooden model propeller. I just don't know what kind of engine to choose from. I have small brushless from a model plane and a DC motor from RC car. Which one is better for this application? Should I get AC motor for stationary work? Can you even power brushless motors without batteries but through some kind of AC/DC charger?

[@Wadaruw]

Can you help me? If I had a motor like the EMAX GT5335/08. I would need to buy a esc with approximately 90 ampers. And the number of cells that the esc need to handle would be 10. Right? Specifications of the motor: www.hobbypartz.com/66p-190-gt5335-10-kv200.html

[@ali10163]

can you do an electronics basics video on transistors?

[@greatscottlab]

+ali10163 Already on my to do list.

[@ali10163]

+GreatScott! thank you

[@sachm7264]

will 410kv brushless motor work with the following specs PROP - 15 x 8 ● Get 3600gms Thrust Lipo - 6 cell 22.2V ESC - 60 amp Power - 3600W please reply.. I am sitting on this for sometime now

[@RaffysRedstoneLab]

A Video about Nixie Tubes would be great !

[@WaltSorensen]

What kind of bench power supply would be appropriate for running a bunch of BLDC motors? Like 81 motors each rated for a max 10amp with 30amp esc... I have a project I want to try building but I would rather not use batteries since this is a stationary project that would be used intermittently.

[@Gothika47]

So i finally know how my RC car works! :D

[@sunshine7453]

Great video! I appreciate the disassemble of the motors and the demo. The video worth a thousand words. Thank you!

[@INVENTORplayer]

how can i power up or how should I connect a bldc to an Arduino nano with an mpu6050 gyroscope? I don't really want to buy an ESC, my main application is a simple gimbal, but I need to know how to connect the various stuff. I browsed the web but nothing answered me :c

[@feco6891]

i have a dc motor ~3,5cm drameter and 5cm long, i would like to power with my lab bench ( pc psu ) but while i connect the +12 and GND the psu spops (same stopping when i connect the +and gnd to a same conductor (i think its name "short circuit" in english , what is tze problem ? and how can fix ?

[@guilhemb2892]

Hi everyone, I need to drive a brushless 2204 motor with a kind of potentiometer? I don't need a thing like show in the video at 3:50. I already have a power supply + brushless motor + esc. Then is there a place where I can buy card with included potentiometer to control everything? Thank you very much for your help.

[@yocody6929]

Hey .I have a question .If i use a laptop charger 12 v direct to DC motor(`12 V ) will work ? .........or will burn .Ty for the answer.

[@XXTechMoXXNew]

wait so how do you use an esc on a brushed motor?

[@XXTechMoXXNew]

please reply :(

[@RR42636]

send a test email to [e-mail]

[@atabey321445]

you dont need one since brushed motors have a commutator built in

[@XXTechMoXXNew]

yes you do. I am looking to control the speed of the motor and you need an esc or sc to do that

[@RR42636]

Use a quaternuon filter

[@gianluisgerena2838]

Hi, I was wondering if you could use a esc to control a stand fan motor, it’s because I have one laying around and wanted to see if this could work, I’m a little bit confused because it has 8 coils and 4 wires, do I connect the main 3 to the esc and the last one that is divided into two are supposed to be connected with a capacitor? I want to see if I could controlled it with a dc supply, even though the output of the esc is Ac, but you get the point. If this couldn’t be done what else I can do to make it work, thank you. By the way, the wiring I mention is something I think it could work from videos and wiring that I have seen, but not 100% sure.

[@MuhammadAzeemET-F-]

Can you make DC genrater with brush less moter if yes, so what the winding is it? I have many brush less moter and trying to made genrater and also looking on internet but I didn't find any thing and then I remember you can help me. So plz help me I am waiting for your help you are my last hope

[@AG-sy4wt]

help! my brushless motor, is clicking and not providing power, i was going at a reasonable speed, then ejected from board. holding it upsidedown it only clicks and rocks back and forth when power is applied =/

[@BiteYt69]

I have not enough money to buy a rotary tool but you gave me a cool idea that I use to make a rotary tool......

[@amitkumarchaurasia558]

Make a video about inverter

[@PKristianCZ]

3:16 .. oh flux capacitator... 1.21 gigawats!? great scott! :D

[@Kyle-yf4ps]

can you control a dc motor speed wirelessly if you can, can you please make a video about it

[@euvo_sound]

Im having a hard time rotating a BLDC motor from a Floppy drive,Im starting to think i need to have a Harddrive to get its built in ESC

[@teravolt1195]

so what's the difference between synchronous AC motors and brushless DC? I guess the DC motor doesn't receive any negative currents

[@nikolasm3300]

Why do brushless motor spec sheets say that they need like 30 amps?! Is there some equation that I have to do because I know for sure that it does not mean that i need a 14.8V 30A battery

[@mathy210]

can you explain more in depth of how torque works using a impact gun because using a standard drill would not work explain how it gives more power then regular drill

[@canari.satiné]

HELLO, I have a problem with my esc, when i connect my esc motor battery there is no think done but when i deconect the midle wire about the esc i heard some beep then no think doing, this problem made when i make a mistake connecting the wires, the bec is good it s make 5v, please should you give me some advice to resolve this probleme, thanks

[@muh1h1]

hoffe du hast dir beim stoppen der motoren nicht die Flossen verbrannt :D Hope you didn't burn your fingers trying to stop those motors :D

[@greatscottlab]

+muh1h1 :D just a little bit

[@PokemonGonesad]

you will think about make a fly hoverboard :Di hope :D

[@BowersElectronics]

Now I know how it is driven, maybe I could make my own ESC using the MSP430 and a few FETs

[@gregheffner6726]

Hello, I see in the video, you have a switch connected to a board and a speed control.. I am want to do the same thing. I want to be able to vary the rpm with a speed pot and then trigger it with a low voltage momentary contact switch, Is this an arduino board? or something else?

[@MoraFratel]

hi, This same ESC can be used in a hoverboard wells (using the proper current, of course)? tkx

[@arungiriarungiri8414]

Hi friend can you make the video on how to make the ESC in home to general electronic components please make the video of ESC please friend

[@leshulsey9060]

Thank you Sir! English sounds good God bless.

[@juliusionescu4905]

Hey why do you not used the beast motor for your longboard because it has a ideal kv rating and 6000watts would be great for hills

[@GSK9B1T3]

Silly question but if I wanted to learn about all things electronic should I pursue an electrical engineer degree? or are there other pathways?

[@glenn0010]

Hey scotr, a small correction. I have built my own BLDC controller for a 1kW motor. The PWM is what determines the speed of the motor not the frequency. The frequency is a byproduct of the PWM. That being said keep up the good work!

[@Ankurverma787]

i have dvd drive motor as shown in video....how can i run it through wall charger or batter...what are four terminals for....so tell me how can i run it

[@josiahmitchell530]

Can you power any regular DC motor with a brushed ESC? Like the ones at 0:48? Thx

[@arcangle723]

can you make a small winch with the brushless motor and a pulley system with it i think it would be a cool video if you lift some weights with the motor

[@malikcolton2013]

Show us how to build an electric bike please.

[@saikittang7450]

lol it's funny when you think about the fact that the fan on the ESC is powered by a brushless DC motor as well

[@HDGamer2424]

Hm... I think i can guess the next videos 4motors with rotors and this big motor ... i don't know...

[@projects4996]

please make a video on how to design Electronic speed controller for brushless DC motor

[@solotrombonist]

this something i have been trying to figure out for a while. how do you hook up a joystick to control circuits

[@g-lurk]

can i run a brushless motor without using the yellow wire? i'm lost on the yellow wire...

[@magnusemilwichmann]

Could u build a wireless charger&charing table, where u just put the supported device on the table to charge it

[@greatscottlab]

+Banterinatoor 420 It's already on my to do list.

[@unklebidii]

Good videos, but they're explained too fast and accent difficult to understand at play rate

[@SquadKillerIndia]

Nice

[@CZBorda01]

Please, do a tutorial to logic gates.

[@greatscottlab]

+Borda Czech Already on my to do list.

[@soccer7901]

what pen is that?

[@ferverous5345]

This is great. I'm currently making a project with some old HDD's and ive been fiddling with the circuitry for a while, this really helped thank you!

[@felixwe9]

Fährst du 1:5er oder warum hast du den Toro Beast Motor? Würde mich allgemein mal interessieren ob du auch im Modellbau tätig bist? Schönes Video, mach weiter so :)

[@Bowhdiddley]

Another great video! I really enjoy your videos and appreciate how much time and effort you put into making them. Keep it up! :)

[@allaboutjugad2384]

what is your education.....? i want the same

[@thebestofall007]

Could you make a brushless motor where you do the commutation with an arduino?

[@gabrielenriquemartinezllan9224]

What is the difference in application between stepper motors and the brushless ones?

[@sergiourquijo4000]

+GreatScott! just curiosity... what have you study or how did you learned all that great stuff? im very interested on all that arduino thing by the way i have burned out tho esc with What i was told a compatible bruhless ezrun motor and a 11.1v lipo battery and i dont know why

[@dontworryaboutit8445]

more kV more rpm less kV less rpm more twork how ever u spell power ok it has more of a jerk when u turn it on

[@jamesandonian7829]

I want to replace the MOSFETs in my mamba phoenix rated for 50v 160a continuous. I need an ESC that can output 30v at 400a. I was wondering how feasible it would be to Replace each MOSFET with ones that can handle 30v (instead of 50). another thing I saw online were stacking MOSFETs on top of each other.... i already made an enormous cap pack using 6 35v 4700f (in parallel) so replacing the MOSFETs looks like it would be harder than stacking an extra one right on top.. oh and I'm going to use 2 larger cooling fans along with the stock heatsink. any suggestions?.... my brush less motor is rated for 25v 350a continuous; something like 7200w. (200km/h+ 1/8 rc car)

[@manliomalavolti9640]

Thanks GreatScott!, my problem concerns a brushless motor used as a bicycle dynamo (generator) to charge my phone, I calculated that the motor shaft would rotate around 5500 rpm with the bicycle going at 20-25 Km/h, with a 3 phase diode bridge and an IC to stabilize current at 5V the trick should work. But regarding brushless I see on markets that speeds range around 15K-25K rpm (!) and current flow ranges around 10-15 A (I need max 1A, otherwise my phone can catch fire) I wonder where I can find technical data about the performance (V, W, I) in the area 4000-6000 rpm, which is my area of interest (I'm a bit out of shape....) . Perhaps I should use a brushless AC motor with gear, which increases the cost. Any suggestion? M

[@stylex1975]

And how about doing your own ESC, not bought one? Doing lightweight ESCs should be pretty challenging engineering task. Keeping motor perfectly synced at higher RPM, with soft start, active breaking, changing direction and without luxury of hall sensor is something I would like to see in a video.

[@nealnicdao2127]

Im surprised the pc fan and its hall sensor was not mentioned anywhere.

[@bilalalimami1317]

can you send this sample to me, i would pay it for you.. thak you

[@slithergaming-6324]

Is there anyway you can power brushless motors without using the esc

[@trevorjames5493]

Great great video I learned quite a bit but my question is ....where do the actual wires connect inside the coils of the brushless motor? if there's no Plug-In or color-coordinated I only have three wires coming from ESC theres 3 wires that got ripped out but the black is still connected inside the coils somewhere.... how or where do I reconnect or solder the 2 remaining wires that got pulled out??? Thanks it's a dji mavic pro

[@arungeorge6112]

Bro please explain how to select a drive for a bldc & the ampere rating

[@SoumilShah]

Ty scott Please keep making videos

[@Griffin-Wilde]

Question ! What kind of motor should I use if I need 300 RPM with a 7.4 LiPo ( 2400mAh, C rating 35 ) battery ? All motors seem to have a very high kV rating !

[@mrx3on385]

Hello. very informative video! normal 3-phase AC motors are actually just "brushless motors" so it would be theretically possible to build an esc that such an motor operates. am i wrong? I think it would easier and cheaper then a frequenzy converter. Mach weiterhin solche Videos! viele Grüße aus Bayern

[@epicnavigator]

Great Scott!