I like that you explain how the individual components work in detail and not just what they do, can be difficult to visualise from a datasheet sometimes. Waiting for part 2 :)
This is the kind of content the internet was made for. Thank you so much for posting all these great videos. You are a great teacher to us less knowledgeable tinkerers. I love your content. And I would like to say also, your english is very clear and very good. I am glad to have your channel in my sub. list.
I once programmed an Arduino to function as a very basic ESC. It couldn't start the Motor on it's own and changing the motor speed while the motor was spinning caused the motor to stop. But as long as you start the motor by hand and don't change the speed, it works. That was for a school project where we were supposed to build a DC motor, while many failed, and some didn't really fulfill the task, I had to overdone it ^^'
Neat. The issue is fidning motor position. You can use the voltage created in the coils, but it won't do the start so you will have to step it up to run-able speed. The other common option is having sensors in the motor to tell the position, and use them to determine what step to use.
Do you keep your drawings and schematics? Your handwriting is beautiful and very clean. I'm not sure if you've ever considered scanning them for a pdf download but that would be really cool to have. Thanks for the great content
Speaking of esc. I am planning to build an electric skateboard by only buying components. I don't want to waste money that I can do by myself. Cant wait for part 2
More fun but be aware that it will probably cost you more in parts if you do it yourself rather than buying an off-the-shelf ESC. Don't do it only to save money because it will cost you a lot more time and at best won't save much money. Having said that it is a very interesting and educational project worth doing for sure.
I'm not entirely sure that this is how a sensorless brushless ESC works. Commercial units read the back-EMF induced in each of the coils to determine the position of the rotor and turn on the correct phases. Speed control is achieved via PWM modulation of such phases and not by arbitrarily speeding up the phase switching.
Do yourself a favour... Buy a fountain pen and fill it with red ink. It will be more cost effective/environmentally friendly then using hundreds of throw-away pens per episode xD. It will also look awesome in the drawing shots of your video! Keep up the great work!
The gist of the difference is simple. A DC motor is just an AC motor with a controller/commutator. In other words all motors are AC internally in the sense that without a changing field it's impossible to create motion.
MrRCking84 That's fine, it's all about learning and that doesn't happen instantly. If you just need a good ESC, they are under $5 for a 30 amp speed controller. I'm not an expert on it either, but I like learning about it.
Great Video! you can even 3d print a frame instead of using wood also would you please condider talking about SimonK firmware, BLHeli Firmware and other popular firmwares for ESCs? im constantly burning my escs , my guess is the BEC is causing some kind of short within the ESC and burning it, but this is a great video eagerly looking forward to the second part!
Well, what is burning? The BEC supply and rest of the ESC are typically separate circuits. There is usually a separate regulator for the microcontroller, which is sometimes shared with the relatively low current gate drive supply where applicable. FET failures can happen for all sorts of reasons (external oscillator stopping from moisture, excessive body diode conduction, no external pull-offs to deal with MCU resets, etc), many of which can be secondary failures.
Thank you guys for the suggestions I should have given a little more information, so I use the cc3d FC, best way to power it is with ESC via BEC, the ESCs are 30A SimonK and the battery is 3s lipo 3000mah 35c, everytime the ESC with which I power the quad blows out (in my case ESC 1,which is front left in an X configuration quad) I dunno what to do, I will try to order a new batch of ESCs and then supplying power to FC via PDB directly (my PDB has a voltage converter IC on board), hoping this to solve the problem, as other wise when I opened the ESC only 1 MOSFET was burned, this could have been the voltage convertor or BEC too, as it's burned so badly I can't read what's written on the package.
Great Scott. Finish it quickly. look up "ardupilot". I'm working with it and made mine with less efforts. So far made 2 quad copters. I recommend you get an external compass for ardupilot to minimize noise from ESCs. I watch all your videos. awesome work man 👍
GreatScott! If one would want to nitpick electronic would be a little more correct. I guess it's the same like the difference between electrical and electronic engineering. Electronics is more about the working of the semiconductors, controllers,... And electrical more about power distribution, high voltage, etc. Not that they both don't have an overlap. But there is a difference, albeit a small one. Not that it actually matters that much.
Electronic engineering is a subset of Electrical engineering. Electrical engineering is the BSc that you get from university, and you may specialize into electronics/power/communications/EM/nano/etc.
In a nutshell, when we talk about MOSFET transistors it's a technique to obtain a higher voltage level than your supply voltage. In order to correctly drive the gate of a N channel MOSFET placed in a high side topology you will need to provide a gate drive higher than supply voltage.
Petru Sfecles ohh ok. That makes what he was saying make sense in a way. Thanks. I'm more of a computer guy so my first thoughts were total confusion xD
Im rewatching these vids since I have a 12 DC Volt frigde, and for what I can see the compressor is a BLDC compressor so Im gonna try to make a control board that control the compressor's speed acording to the temperarute, thank you for the well imformative video!
wait is it possible to create an esc without arduino? i mean well i do have arduino but i dont understand much of it so there should be second option to create an esc without a arduino, right
Henkel gezwenkel everything is becoming diy these days .You can make your frame (3d printing) ,your radio(opentx mega,nextsteprc),flight controller (joop brokking,multiwi etc),ESC as this one and in another channel I have seen.someone even created his own 3d printed motor(halbatch or something like that).wow really wow
I am literally moments away from making my own ESC for a brushed DC motor. I am sitting down with a cup of coffee for my final round of planning...when RUclips reads my mind and suggests I watch this video. Alrighty then...mind-reading creepiness aside....let's see what I have waiting for me...
I just finished reading into this while building an ebike motor last week and thought "I will suggest this to Scott" then it turns out I did not need to in the end. XD
Tim Corkill Li-ion batteries need regulated constant current charging (unless you like fires), so they should have a charging circuit built into the phone. So if it limits it at 1 or 2 amps, it doesn't matter if you use my 23 amp 5v power supply or a regular 2 amp USB charger, the charging circuit will limit it.
Use the IC MC33033 from Onsemi to receive the 3 phase encoder signals and to drive the gates of the 3 high side and 3 low side fets. Its works quite well. All you need are signals to drive the direction of rotation and a voltage to set the speed.
Great start Scott, but what you are implementing is open loop commutation which is very inefficient. I hope you can reveal the secret of sensorless commutation feedback which allows variable power with best efficiency, so critical for battery operated drone flight.
Great video, thanks for sharing, my recommendation you do need create with the resistor network one sensorless method for know the position of your motor and applied the current in the correct moment for increased the speed and performance of your driver.
Hi Scotty, mate just watched your ESC build, while its impressive, you're working way to hard! Odrive is the key, and if you're serious about control, its a must have. Regards Stiggie
I like that you explain how the individual components work in detail and not just what they do, can be difficult to visualise from a datasheet sometimes. Waiting for part 2 :)
Do you feel like a man
When you push her around
Do u feel better now
As she falls to the ground 🗿
Can't wait for 2022 finale
Me neither ;-)
Anthony Pinto I keep asking myself that.. 😎😎
me too
Polkacik I wonder where it'll be hosted as RUclips will be a Pop Advertising Click Bait wasteland by then
Do R/C! We will see in 2022. Just wait
This is the kind of content the internet was made for. Thank you so much for posting all these great videos. You are a great teacher to us less knowledgeable tinkerers. I love your content. And I would like to say also, your english is very clear and very good. I am glad to have your channel in my sub. list.
Me watching this in 2023..
Same
Lol were right on time
Hmm
Welcome in 2024
Me in 2024 😂
I love your hand drawn schematics. You should sell them as art. Freaking gorgeous.
Neato Electro truly
on art world no need to be smart but just sensitive, you underrate an engineer
I once programmed an Arduino to function as a very basic ESC. It couldn't start the Motor on it's own and changing the motor speed while the motor was spinning caused the motor to stop. But as long as you start the motor by hand and don't change the speed, it works.
That was for a school project where we were supposed to build a DC motor, while many failed, and some didn't really fulfill the task, I had to overdone it ^^'
Neat. The issue is fidning motor position.
You can use the voltage created in the coils, but it won't do the start so you will have to step it up to run-able speed.
The other common option is having sensors in the motor to tell the position, and use them to determine what step to use.
Chickenbread Designs did you use a different power source and a mosfet switch?
You should make scans of your wiring diagrams. It's art, man!
I just watched your "Make your own time machine" video. It worked like a charm :D
Looking forward to seeing the quadcopter finished this year 🙂
hey man 2022 is pretty close , can't wait
wow this is amazing and you are so smart
I used to watch GreatScott before i started droning with you Stu.😉
Every time I hear your intro music I cant help but think of the Mr Wizard tv show I grew up watching as a kid.
Do you keep your drawings and schematics? Your handwriting is beautiful and very clean. I'm not sure if you've ever considered scanning them for a pdf download but that would be really cool to have. Thanks for the great content
Just come here to see your quadcopters video which had to be releaed in 2022 and just 2022 is going to be start
2021 and counting.
Hey your explanation is better than any school teacher I've ever seen. New here.
Who else wants bootstrapping basics?
Me!
Kau Mohlamonyane ido
Me!
What is bootstrapping? I'm asking serious. Explain this to me like I'm a total noob plz.
Still waiting on an explanation
Speaking of esc. I am planning to build an electric skateboard by only buying components. I don't want to waste money that I can do by myself. Cant wait for part 2
More fun but be aware that it will probably cost you more in parts if you do it yourself rather than buying an off-the-shelf ESC. Don't do it only to save money because it will cost you a lot more time and at best won't save much money. Having said that it is a very interesting and educational project worth doing for sure.
I'm not entirely sure that this is how a sensorless brushless ESC works. Commercial units read the back-EMF induced in each of the coils to determine the position of the rotor and turn on the correct phases. Speed control is achieved via PWM modulation of such phases and not by arbitrarily speeding up the phase switching.
Can't wait for the drone next year
Do yourself a favour...
Buy a fountain pen and fill it with red ink. It will be more cost effective/environmentally friendly then using hundreds of throw-away pens per episode xD. It will also look awesome in the drawing shots of your video!
Keep up the great work!
their polished surface looks so satisfying
Scott please make an air conditioner (not a swamp cooler).
Cool & Quiet ... the reality is they are much different.
I ve been waiting 4 YEARS
I'm curious about holding current from the ESC for an application when you want to hold the motor still under varying load
I love the frequency of 20 milliseconds. It's the perfect rotational speed.
Me watching this in 2024..
Same
Nice to see a RUclipsr that responds to comments
Great Scott, can you make a video about AC motors or the difference between AC and DC motors please?
There are tons of videos out there explaining the difference between the two.
Petru Sfecles, yeah but GreatScott man.....
The gist of the difference is simple. A DC motor is just an AC motor with a controller/commutator.
In other words all motors are AC internally in the sense that without a changing field it's impossible to create motion.
All motors work from AC.
He did actually finish this year!
thank u very much to make a video on esc, i like u r videos
Hey Great Scott. Only a few months left for 2022 to complete your quadcopter!
when I read the title I thought this was actually a guide to macbook "pro" owners to make their own physical Escape key
hehehehe
I dont understand the programming but I m glad I watch your video. yet still I dont understand. I love your videossss
your quadrocopter will still be finished before the airport BER (Berlin Brandenburg) haha
Good one :-)
Hi grear scott
Hugs from mex
@@greatscottlab HEY MAN I GOT BRUSHLESS MOTOR WITH 14 MAGNETS FOR MY LONGBOARD AND WHAT CIRCUIT SHOILD I USE FOR WIRED REMOTE CONTROL ???
Damn! 2022 and all are waiting for the quad-copter
This project is waaaaaaaaaay beyond my brains.
MrRCking84 That's fine, it's all about learning and that doesn't happen instantly. If you just need a good ESC, they are under $5 for a 30 amp speed controller. I'm not an expert on it either, but I like learning about it.
Jake Garrett But you are good at what you are doing.
WE'RE HERE
Yeah! i knowed that will be something with motors his week :D
Coming from a fellow electrical eng... Man you make this stuff look easy ._.
You are some kind of wizard haha. Great video!
Thanks mate :-)
HOLY CRAP! You have a $10,000 Oscilloscope?
It's just a hobby scope you know. Just like Great Scott tries to make you think it is. But he has extreme good gear for just a "hobby".
If you use two seperate power supplies(your supply has two channels obviously) It may work.just an idea.great video greatscott !
Part 3 flying of quad quapter
Well good sir I do expect a video on this quad copter within the next year
Great Video! you can even 3d print a frame instead of using wood also would you please condider talking about SimonK firmware, BLHeli Firmware and other popular firmwares for ESCs? im constantly burning my escs , my guess is the BEC is causing some kind of short within the ESC and burning it, but this is a great video eagerly looking forward to the second part!
How much current are you using? How big is the filter cap on the ESC?
Well, what is burning? The BEC supply and rest of the ESC are typically separate circuits. There is usually a separate regulator for the microcontroller, which is sometimes shared with the relatively low current gate drive supply where applicable. FET failures can happen for all sorts of reasons (external oscillator stopping from moisture, excessive body diode conduction, no external pull-offs to deal with MCU resets, etc), many of which can be secondary failures.
You probably need higher Amperage ESCs
Thank you guys for the suggestions I should have given a little more information, so I use the cc3d FC, best way to power it is with ESC via BEC, the ESCs are 30A SimonK and the battery is 3s lipo 3000mah 35c, everytime the ESC with which I power the quad blows out (in my case ESC 1,which is front left in an X configuration quad) I dunno what to do, I will try to order a new batch of ESCs and then supplying power to FC via PDB directly (my PDB has a voltage converter IC on board), hoping this to solve the problem, as other wise when I opened the ESC only 1 MOSFET was burned, this could have been the voltage convertor or BEC too, as it's burned so badly I can't read what's written on the package.
Afzal Patil what amperage are your ECSs and what motors?
Great Scott. Finish it quickly. look up "ardupilot". I'm working with it and made mine with less efforts. So far made 2 quad copters. I recommend you get an external compass for ardupilot to minimize noise from ESCs.
I watch all your videos. awesome work man 👍
It's actually "Electronic Speed Controller"
Actually some people say electronic, others electric. Doesn't matter.
I have to agree with Francis.
GreatScott! If one would want to nitpick electronic would be a little more correct. I guess it's the same like the difference between electrical and electronic engineering. Electronics is more about the working of the semiconductors, controllers,... And electrical more about power distribution, high voltage, etc. Not that they both don't have an overlap. But there is a difference, albeit a small one.
Not that it actually matters that much.
Electronic engineering is a subset of Electrical engineering. Electrical engineering is the BSc that you get from university, and you may specialize into electronics/power/communications/EM/nano/etc.
Francis Rohan John 😂😂😂your that one guy. Who just had to day it🤣
One year left to complete 😂😂😂
i like variable resistors
same thing, just different shape
Yaaay a quadcopter in 2022 really like your videos and waiting for 2022 thanks for content
On which software do you simulate the circuit?
Its 2022, I am still here
What is Bootstrap?
Bootstrapping is a method to drive high side n-channel MOSFETs. I might do a video about it in the future.
I second this question.
please do :) you explain stuff very well. so would be much appreciated.
In a nutshell, when we talk about MOSFET transistors it's a technique to obtain a higher voltage level than your supply voltage. In order to correctly drive the gate of a N channel MOSFET placed in a high side topology you will need to provide a gate drive higher than supply voltage.
Petru Sfecles ohh ok. That makes what he was saying make sense in a way. Thanks.
I'm more of a computer guy so my first thoughts were total confusion xD
its 2021 ,ur close
1:36 frequency of 20 milliseconds?
Yeah with a period of 50hz
Not going to lie... Im basically here to feel stupid.... This guys vids are awesome...
Where's the quad at its 2022.
Im rewatching these vids since I have a 12 DC Volt frigde, and for what I can see the compressor is a BLDC compressor so Im gonna try to make a control board that control the compressor's speed acording to the temperarute, thank you for the well imformative video!
so did you finish it?
one does wonder
You are the best... and I don't give complements easily. Subscribed !!!
Wow,
great! i have searching this on internet but you made it. thanks for the video, its helping me to understand a little bldc works.
wait is it possible to create an esc without arduino?
i mean well i do have arduino but i dont understand much of it
so there should be second option to create an esc without a arduino, right
It is possible to do without Arduino, but I think using a µC is the easier way to create one.
Logic gates and shift register?...
I have driven stepper motors with an ULN2008, 4017, a few diodes and NE555 before. It should be possible do to the same with a BLDC Motor.
You don't use sine with a BLDC. Only PMSM need sine waves; BLDCs use 120° shifted 0 -1 0 1 (stair?) waves
Also called block-commutation.
oh man this was a tough one.......darn phases! I need to watch this a couple of times
how can I use this steps to do an esc to work with 48V and 1500w?
if anybody know please help me
I wanna know too
I'm in for a 48v 750W +/-
Damm I didn’t know I could make my own Eurovision Song Contest. Brilliant!
laughed so hard at 0:07
Yeah "probably"!
it's a joke lol
Well the joke is getting serious..... Its soon 2022
Thank you for making this series! I've showered the internet for such a video several times
1:36 frequency of 20 ms?
"cycle duration"
yep, I knew that but I wanted to point that mistake out :)
Or period?
it was not a major mistake. you know what he meant
maks886, to the technical community who can understand the main point, you're the equivalent of a grammer Nazi
Finally a tutorial I've been waiting for.. But until now I somehow managed to save money to buy a new one.
lol phantom props
Cool project, Joop Brokking did make his very own flightcontroler for multiroters driven by the arduino
Henkel gezwenkel everything is becoming diy these days .You can make your frame (3d printing) ,your radio(opentx mega,nextsteprc),flight controller (joop brokking,multiwi etc),ESC as this one and in another channel I have seen.someone even created his own 3d printed motor(halbatch or something like that).wow really wow
Who noticed he never shows his face on his videos?
You need to watch more GreatScott!'s videos.
I am literally moments away from making my own ESC for a brushed DC motor. I am sitting down with a cup of coffee for my final round of planning...when RUclips reads my mind and suggests I watch this video. Alrighty then...mind-reading creepiness aside....let's see what I have waiting for me...
Am i first??
Keep the good work up!
We are close to the deadline
I just finished reading into this while building an ebike motor last week and thought "I will suggest this to Scott" then it turns out I did not need to in the end. XD
I’d like to see a video on measuring how many amps of charge an iPhone can take and then build a charger at maximum input charge! Awesome
Tim Corkill Li-ion batteries need regulated constant current charging (unless you like fires), so they should have a charging circuit built into the phone. So if it limits it at 1 or 2 amps, it doesn't matter if you use my 23 amp 5v power supply or a regular 2 amp USB charger, the charging circuit will limit it.
One year left!
Had a class professor could explain in such a way!!!
Use the IC MC33033 from Onsemi to receive the 3 phase encoder signals and to drive the gates of the 3 high side and 3 low side fets. Its works quite well. All you need are signals to drive the direction of rotation and a voltage to set the speed.
Great Work Scott , I´ve been trying to make an arduino ESC controller for a couple of years!! This help me a lot! THX
So clever the whole lot, EG sourcing the IC ,etc.
Just now watching.... But gave thumbs up... Becoz, this is jeremy's video
EasY Engineering And SCience iui
It's 3/4 quarter of 2019 already. Can't wait for 2022.
When you make video, it's always some Boom....
Keep on doing the projects and you'll make world more interesting place..
NOW WE CAN SEE WHO IS THE REAL MAN !
One of the best RUclips channel
You deserve à hundred likes ! you are teacher
Thank you. I couldn't find any video in RUclips where we can make our own esc. thank you very much
2 more years buddy...
Great start Scott, but what you are implementing is open loop commutation which is very inefficient. I hope you can reveal the secret of sensorless commutation feedback which allows variable power with best efficiency, so critical for battery operated drone flight.
"Wich i will finish in the year 2022"
Me watching the video in 2024
Great video, thanks for sharing, my recommendation you do need create with the resistor network one sensorless method for know the position of your motor and applied the current in the correct moment for increased the speed and performance of your driver.
FANTASTIC! :D One question: what about a brushed esc? Should be nice!
pwm
2 more years to go, can't wait.
Hi Scotty, mate just watched your ESC build, while its impressive, you're working way to hard! Odrive is the key, and if you're serious about control, its a must have. Regards Stiggie
I love watching your videos, I don't have a clue on alot of what your saying but I do learn some.
Interesting I was always under the impression that sensor less escs used some kind of feedback from the motor as part of the way they ran.
Correct. But this is only part 1 of the project.
ahh finally something where i dont feel left behind knowledge wisr