Mini Wind Turbine || DIY or Buy
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In this episode of DIY or Buy we will have a closer look at a commercial wind turbine. I will show you how it works and how much power it can output. Afterwards I will then 3D print a mini wind turbine I found on thingiverse and test it as well in order to figure out whether it makes sense to DIY such a wind turbine or whether we should stick to the commercial solution instead. Let's get started!
Thanks to JLCPCB for sponsoring this video
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Music:
2011 Lookalike by Bartlebeats
Diy or Buy?
GreatScott: Yes
Yes great scott is a cheater: jlcpcb wins clearly
@Santosh Wankhede
Today GreatScott is a coward
The buy is clearly the winner if you don't look at the price tag but 300mW is way too low anyway.
@Santosh Wankhede it is referencing a meme
yep, not a socialist !
Never a socialist !
Whoever designed this thing did an amazing job, the 3d printed turbine looks more commercial then the commercial one
4:45 Even FULLER BRIDGE RECTIFIER!
Oops, wrong channel :D
Go, Team ElectroBOOM!
Anyone else watched Mehdi's latest video about the human jumper cable and glowing radioactivity before watching this one?
Haha
@@wunderwaffeyt4077 definitely
Glad someone said it. I mean it had to be said
i love how the outro becomes more and more enthusiastic
One day he will scream.
@@lucien7904 l
“Distance of as close as possible” 😄
it's a measurement used only in Germany
Good enough for engineering lol
That was really interesting
I call This " bailey's before your eye get all wet"
Both win: cheater mode, you cannot compare the 2.
The Nema motor is a big mistake. Inefficient as a generator
Absolutely.
Use a suitable BLDC motor instead. The gears aren't the issue, as those gears are almost 100% efficient, say 95% efficient or more. You're issue is the generator. ;)
yep i wonder how diy design work with generator or hmm some diy generator from rewind motor?
@@buragoja9052 probably a brushless DC motor with a better efficiency but it is much more expensive.
A diy generator is fun but you need the computer tools to simulate the magnetic fields before you try to wire the motor. Or you will spend ages and probably fail.
Exactly my thaught as well. That generator probably sucks big time. Even if the motor works fine, driving a reduction gear backwards may be really heavy and will probably waste most of the power.
@@RomanoPRODUCTION there are many inexpensive brushless motors to match the exact needs. Match the motor kv to the expected rpm, and you can have direct drive.
Comparing both wind turbines output was fine, but while you gave a cost for the commercial, we didn't get to see an estimated cost for the diy project. A cost per watt for both for both would have been very usefull, and likely a major decesion factor for many. 😊
And lastly, a better test for 2 turbines with different blade lengths is to have the same wind blow across the entire surface area of the blade. Maybe take a box fan (or four), and make wind tunnel.
DIY or BUY: Handheld vacuum cleaner.
DIY or BUY: robot vacuum cleaner.
I can put it on my to do list :-)
@@greatscottlab Yay! (Again)
@abdul bari *Angry dyson sounds in the corner*
That’s pretty much Buy, as they’re cheap and it’s not exactly easy to make. Also, Jeremy doesn’t have too much time as he has money, so Buy usually ends up winning in most cases by default.
Building one myself is much more exciting. So, DIY is my choice. Like you said, It's a learning process. The second and third ones will be much better than the original DIY.
"Let me know your farts" 10:16
oof
I actually thought the same XD
hahaaaaaaah. but a great video. I love this guy.
I came here looking specifically for this comment
He’s still a great guy
your videos are usually the best thing to happen on a sunday, thank you!
Thanks :-) You're welcome :-)
Man, the design creativity in that 3d printed turbine is crazy! Very cool of the creator to release it. Too bad wind is nearly useless around me, but around a big lake or ocean I'd totally build my own.
It's always nice to learn from something you are making rather than just build it, in my opinion. I like the Passive Variable Pitch design shown since it could be used in higher wind conditions.
Verticle wind turbines can spin regardless of wind direction I recommend looking into them
I heard they are generally better for lower wind speeds as well. So I suspect they are great at lower evaluations to boot.
Can you try to build the 50W version too, please? :D
If the 5W version is about $150, then I sure the 50W version would be much much more expensive, time consuming and quite huge in size.
For small to medium wind turbines a vertical turbine is more efficient, also much easier to DIY
Thanks for great content!
So you know, you can add a pause into the print in PrusaSlicer (use a color change or the pause feature in the beta). That way you don't have to deal with the movement while inserting components.
4:13 TFW you go in with a dremel just to find threads on the other side
been there XD
Hah true
Looked like a snap in rather than threads.
@@RobertSzasz
also kinda looks like it was glued 🤷♂️, in either case it *probably* could have been been opened by less destructive means.
not that it particularly matters except to serve as a spring board my allegorical shared feels moment.
pretty much why I soak stuff in acetone first and try and if it still doesn't work, some heat and then maybe a cut
Some grease on the moving parts might help regaining some lost power as electricity, i think. And the design is mechanically brilliant but, maybe keeping it simpler and finding a way to make a lighter propeller would help a lot.
I think there is a disc generator (Scheibenläufer) used in the commercial unit. The problem with the stepper motor is the cogging torque of the individual steps. This force is also higher with the used gearing. I recently printed a vertical wind turbine and made such experience. On the other hand you need some kind of MPPT for a wind generator. Or just make multiple load cases. A single point of measurement is not significant for comparism between both units.
4:45 *FULLEST BRIDGE RECTIFIAAHHH!!!*
No, it is the "even fuller bridge rectifier."
Or as the Germans call it: SECHSPULS BRÜCKENSCHALTUNG!!!
I do believe in the power of a DIY project. It gives you the opportunity to experience and improve the concept.
Your DIY wind turbine can be greatly improved. Don't give up!
Your comparison is truly great! Also, I would defenitely recommend trying out the DIY version with a much bigger motor, or maybe even with the one from the commercial turbine!
I have a large (~2-3kw) BLDC motor just... lying on a shelf in my garage. I bet the parts for that 3D printed turbine would scale right up.
In this episode of DIY or BUY.... DON'T! LOL. A 10x10cm square PV panel can do about 4W, though you still need a battery for night time.
I came to the same conclusion. Wind power doesn't scale down: To be practical, it must be huge. The power produced is proportional to the cross-sectional area, so if you make your turbine twice as wide you get four times the power. It's also proportional to wind speed *cubed*, so you need to mount it at some height to get a good wind flow. Photovoltaics are linear in scale: Spend twice as much on panels, get twice as much power output.
@@vylbird8014 turbine twice as wide cost more than twice as much
0,1m*0,1m=0,01m2 with 1000W/m2 is like 10W and with the efficiency of 15-20% its like 1,5-2W max
@@jklmnpqrst It costs less than four times as much. So the bigger you build your turbine, the better your cost-per-watt gets. The cost of building twice as big is usually less than twice as much too - the blades are cheap, it's the bearings and support that make most of the cost. The economics of wind power are just not in favor of small-scale generation. The rapid fall in the cost of wind power generation in recent years is largely just due to the introduction of bigger and bigger turbines. GE has a model with a 220-meter blade diameter! Those things are around the height of a seventy-story building.
@@jklmnpqrst But less waste means more saving and faster to pay itself
For the record, I ordered a stack of PCBs from JLCPCB and the same exact stack from a US based manufacturer. The JLCPCB boards arrived today. No word on the status of the US manufacturer. All said and done, the JLCPCB order took 9 days to arrive.
Well, screw my other ongoing projects I wanna make my own wind turbine now.
the breathing is so annoying. downvote for sure
Germany has those free Hardware stores out front of every second house ;) You can get tons of BLDC motors from your neighbors scrap. At the end of the summer I picked up a bunch of fan motors. An old car alternator will work too.
my phone is currently charging with 18w. the probably try to sell it as an outdoor energy source but with that kind of output power you're better of packing a power bank of the same size.
Or a solar panel
Build one of your own ,you need 2 stator discs 1 for magnets 1 for coil assembly and 1 for rotor magnets.You will need axle and 2 ball bearings and make a housing.
Take one of the permanent magnets used in the rotor, and measuring the distance at which that magnet just begins to lift one end of a 32 mm (1.25 inch) paper clip off the table. The optimum length of each coil from end to end is exactly the same as the distance at which the paper clip starts to lift.
As of width of the coil its 1.5 times the measured distance.Smaller the magnet more thinner wire you need-thinner wire = less amperage you can use.
More coils and stronger magnets you use = less speed you need .
People build wind turbines like this by using drum brakes and wheels of a car.You can use round magnets or square,it doesnt matter ,they need to be N/S/N/S polarity.You can experiment and put a core inside a coil to boost effectivnes,but you will create drag-making it harder to spin propeller-which can be adressed by using transmission like pulley for example.
Its cheap if you use a old wire from dead appliances like angle grinder for example ,just make sure wire is good to use,you can laminate it again by using spray paint and a rag.if there is a few spots damaged.
Cordless drill and a bolt with washer welded makes a good coil winding jig.On other end use a nut with welded washer on it.
Hope these guidelines help you !
Happy recycling and windmill building everyone!!!
God I love this series. And I agree with your answer of "yes" in this case
I think DIY is always the winner because LEARNING!
Would've been interesting to know how much he spent on filament and other parts.
Filament I buy is about $10 USD per killogram (so about $5 per pound). Since these don’t really need to be solid you could save some weight but even assuming it’s solid then that’s like maybe a pound of plastic.
**Technically I rarely pay over $8 per kilo shipped to my door, but I also don’t care about color so if ugly puke green or fluorescent yellow is on sale that’s what I get! I have used more expensive like $50-$60 per roll as well and it’s often a pain and super picky for some reason, so I use the cheap stuff. I typically print ABS and PLA (I even got a nice kilo roll of glow in the dark PLA for $9.99, haha, I literally switched my machines parts to work with 3mm filament just because it was such a great sale, haha!
Locally it’s also like $12 for a roll of any size and nearly any color (it’s the clearance rack, but they usually have like 10 rolls of a good variety), otherwise retail store mark up your looking at $17 per kilo but they have a whole rainbow gambit of colors and materials (some specialty like carbon fiber reinforced, wood or metal additive, or TPU will cost more).
NEMA 17 motor is like $8-$10, so not a lot and the NEMA stepper does not make a good generator so I’d pick something else personally, but that’s roughly what it cost is like maybe $20 in total with the voltage controller and stuff (could be as high as $30).
@@jakegarrett8109 what a nice and detailed explanation, thank you good man :)
Jake Garrett 1kg PLA filament cost around 20-25€ in Germany.
@@Todestelzer or 12€ - 15€ on eBay.
You don't always have to buy the most expensive filament.
@@jakegarrett8109 thanks! $30 bucks seems fair.
Pvc pipes used into the industry (based on thickness) you could find them in pecialized shops or ordering them.
Actually, I have been waiting my for PCB assembly from JLC for maybe a month now. That's how long they have delayed my project. Not to mention, they had to cancel one of my projects
Maybe they found your YT username....
@@doctorpex6862 maybe
Since the Corona pandemic everybody body has to wait for parts from China... I really liked oshpark... Certainly not as cheap but even with shipping from us to Germany a good option.
@Joe Blow yeah. Customer service is really great, on my first project I fucked up my drill files... And they were kind enough to email me back...
Thats quiet odd! My order was produced with almost no delay...
Scot, the passive variable pitch system is a break to prevent the blades destroying themselves in high wind; looks like your leaf blower put the brakes on and limited your result
Finally!!!....
I've waited too much!!😎😎
Same
Same
Creating a "small" wind turbine is obviously just for learning purpose. It has no use in real world, even negative efficiency. If you're really thinking to make a wind turbine, think at least a metre in diameter and a few turbines connected in series. That would be sustainable.
Swiss German for "My Wind Turbine" 🙈 = "Mini Windturbinä"
Cooles Projekt
I think the DIY solution is the best one. First of all because as you explained, I teach a lot. And then, also because it can improved to fix all the issues the affect the current design.
Nice comparsion.
Know I want to build my own wind turbine ;)
For comparsion I think you need to also test the generated energy in real environments. Cause in the average I think you get more energy from the diy genrator. And the wind from the leaf blower produce wind only on one spot. :)
only some thoughts of mine :)
Like your work! Gives me a lot of inspiration
He just needs to visit the UK. Plenty of wind here at the moment with the storms we're getting.
You can use Hoverboard motor for wind turbine... Which gives more pawer.
4:45 even fuller bridge rectifiaahhh
😁
I love that people can just go "this part does not exist, let's print it". Everyone should be a cogboy, or know someone who is. The more stuff we can make on our own the better.
Cool, gerade für uns im Norden eine Idee! Danke für das Video!
The assembly did not go as planned because it was "Assy". :)
Love the videos!
Someone probably: There wont be enough airflow to make it turn. Also it doesent work in every weather!
German Weather: UNLIMITED POWER!
Yep. Especially this year.
@@SimonWoodburyForget OK... Uhm did you.... Not not get that this was a joke?
@@SimonWoodburyForget hmmmm....charge cell phone at the beach? But no signal there anyway, soooo.....
DIY or BUY: Generator with internal combustion engine. With Maximum Power Point-Tracking.
I've built one with a Nitro-Engine, a DC-Motor for the starter and a BLDC-Motor as the generator.
Looking forward to the test next weekend - Certainly more fun than grabbing a cheap generator from ebay. :)
I'm going to do a DIY RBMK 100 nuclear reactor. Makes plutonium as a bonus.
Isn't the RBMK family only RBMK 1000, RBMK 1500 and RBMKP 2400?
@@psun256 Well yeah, but there's no way you could print out a 1 GWe reactor core on this printer. I figured toning it down to 100 MWe would be more realistic.
@@AndrewTubbiolo Literally ten times easier to make now (not really but yeah)! But yeah I guess it is a bit more realistic but you'd have almost equal numbers of problems with the government than your reactor
@@psun256 I'm joking. .... It's not realistic. :)
With proper design DIY is the winner.
Fantastic work, dude! Really well done! 😃
I bet you could make a few tweaks in the model and use a better motor. Who knows. 😊
The efficiency was highly reduced by the forward voltage of the Diodes. It was not mentioned if they are shockey ones or not. But lets assume 1.2v for two Diodes. In the buy option an output voltage of around 1.5v can be seen. In this case the loss is a bit less than 50%. At the div option a voltage of about 0.75v can be seen, witch results in about 60% loss.
"Their products are healthy"
-GreatScott 2020
1:50 Good to know they force their workers to keep working during an epidemic, will definitely take that into consideration next time I order pcb's.
Adding the nut while printing? Sounds like a broken printer / failed print wanting to happen.
If you have some experience with wind turbines, DIY is definitly the winner. But you need to build at least 3 to 4 turbines to get a good working one.
I recently bought a hand cranked emergency USB charger. You could do an episode on that
Seems both designs need a conductive slip ring so the turbine can freely point into the wind without getting bound up. As they are now, wind that shifts direction a lot would cause problems.
MyDealz, i see you are a man of culture as well ;)
;)
He really should order a wind turbine for his Gästeklo
Excellent presentation. Thank you for sharing and stopping me from buying the commercial version.
Would you make video about cocroft-walton voltage multipliers?
I second this request.
The system in the propeller is sensible to the speed of the propeller, because when the speed increses, the swashplate will get away and will give more angle to the blades, and the wind turbine will be more efficient. It is quite normal that by activating one, the other blades don't move, because it is only there to standardize the mouvement, to give to every blade more or less the same angle, but the activator, to give angle is the wind, and not the swashplate. (Well, that's my opinion, I do not rule out the possibility that I am wrong) Other than that, good video, as usual, and good luck !
9:47 The marker smearing the ink ahhhhhh o_O
Why does EVERYONE hate that?!
I hate this too! It's hurting me
Why is this in each of his videos :(
This always upsets me. I know before I click on the video it's coming and try to brace myself, but every time ARRGHHHH!!
@@lucien7904 I know right?!
Peak voltages of motors make diode drop material. Smooth voltage from generators makes active regulation safe.
Im so high i can only focus on his inhale after finishing every sentence....
Same 😂 his accent kills me even as a swiss.
JLPCB didn't have to roast their competition like this !
You bought yourself? From whom? 😂
For me a combination would win: Waterturbine on strings, Handcrank and maybe Windpowered...
1:43 LOL!!!
The virus is so sad tho
This is a subject close to where I live. I am going to attempt to be building a flat pack cabin for up in the Cascades mountains and need to provide power. I will build a DIY wind turbine but from other materials.
Great video and you have won 👏 an appreciation day on my calendar.
Germans are great people. Builders, workers, perfectionists and organized.
I like to see you build Wind turbines from only the parts you can find in a junkyard.
Junkyard special or the politically correct term(recycling for alternative energy resource) ua-cam.com/video/wlMlEkR704U/v-deo.html
I was waiting for a diy wind turbine for a long time... But was hopping for a bigger one... And a real diy route... Not piy ( print it yourself ) go bigger... Maybe see what it takes to make a car alternator produce some real power... ! I do love your videos but on this one i was hopping for a bit more, knowing that you got the skills!😁 Excuse my grammar! Keep it up 😁
You need a HDD motor and low drop off schotkey diodes with voltage drop of 0.2-0.3 v and then an energy harvesting circuit
Diy or buy
Subtitle : DIY OPPAI
UA-cam man of culture
Wind turbines are good for people who live in the woods, and far away from utilities, wall power is so cheap, that’s why I won’t build one. But it’s a cool project for a science club or something like that.
I have that infini air, and my issue is.... It requires rather hard wind. Maybe it could be converted to vertical with just 3d printed Wingz of larger size? Would be great if someone (😉) could do that. Feels well built but doesn't full fill it's potential. Great video
great scott, i know its a bit off putting but you should always grease the gears because if you want to last it for longer (It is literally plastic while introducing minimal if not barely any friction). The turbine spits out pretty high RPM that would wear down your device pretty fast. just keep it in mind, i live that your going back to power generators. I found them the most fun videoes
next DIY or BUY idea - 5.1 surround sound with 5 wireless speakers (may be runs on battery) and the subwoofer has a raspberry pi that controls the 5 speakers and has FM/audio in and HDMI out to connect to monitor to run videos as well.
Nevermind, sounds like a coding project rather than an electronics project
use a bigger step motor(rated for above 40 volt). and attach the propeller directly to the motor.
use two rectifieres, one for each coil and a common dc bus.
in my wind turbine, i also make a nacelle. but the vind generator gives 12 volt output at 0,5 to 1 Amp. with two coils, it gives 2 amps on the dc bus circuit, that can easily run usb chargers or charge a 12 volt battery.
my step motor is rated for 75 volt and 1 amp.
When i do my own projects i always watch your videos first
Awesome! :-)
Very informative video. Back to the turbines, I think both are useless for any kind of project. DIY takes ages to build and has poor efficiency. Ready made one is also useless because its price is just prohibitive and power output is also not so great. I think that the best part of DIY one is that you really can learn a lot! Thanks for the video :)
That 300km/h is on a the small output area of the leaf blower and that is way smaller than the sweep area of the wind turbine thus the small output power. In any case a solar PV panel is always a better choice than a small wind turbine.
I know the motor being smaller would make the power less, but if you balanced the whole rotor head (use a string on your roof with a bent nail tied on the other end and hang your rotor over a level surface,then add weights to make it balanced.)
I bet the power output would increase more than you expect. All those forces while spining is thrown off when the assembly is not properly balanced and you lose power generation to motion.
I simply took a radiator fan from a car, attached it to brushless motor from a laser printer and got average power of 10w (enough to charge phone overnight) and at Apsolute peak I got 50w
For something I slapped together in one night it was pretty good wind turbine
minimizing friction losses decreasing flywheel weight while increasing sail surface area and of course light lubrication should improve the design I'd be shooting for 3000mw or 3amp at 5v for design specs that'd allow for charging a battery pack and the parasitic drain of a device running on the battery pack as long as the wind blows also thank you for sharing the content ❤
I found out that the stepper motors have a small ring in the bottom that creates friction when spun. If it is taken out it reduces the energy loss a lot.
Wind power is one of the reasons I got into electronics. I think going with a stepper may have been the major issue with why this didn't output a lot of power.
I forget the model numbers, but there is an old IBM disk drive motor (from the '80s I believe) that is considered in DIY circles to be the best motor you can use for this purpose, but they're getting hard to find and obviously the price goes up. A lot of documentation exists for people trying different things, like using a car alternator (which is very poor, btw, it needs to turn really fast to get any real power, which means a high gear ratio and much losses).
Another (and I think very fun and perhaps something to try) method is to build your own generator. I've seen them built out of hard drive magnets and other such things. Build a three phase motor with some coils and some magnets and you can build a decent wind generator. I started collecting hard drive magnets but I just never had enough to make a good attempt.
You're absolutely correct about gearing. It should be avoided unless it's a large turbine with long blades so the loss in power is made up for by getting more power from the wind.
What if we use 775 dc motor?
Just the video I needed for my project "Windmill" Thanks Scott.
In a class at college that I am a teachers assistant in we have the students build a wind turbine, and then have a raspberry pi to output the stats of the turbine to a screen such as power, voltage, and rpm, we also have them make variable loads for the turbine. Next year we will have them build a drawbridge.
I never noticed all your inhale sounds till now. Now i can never un-notice it AAAAAAAAAAaaAAAaa
Oh damn you! Why did I have to read your comment.
@@goatman86 s u f f e r
Delete this
That JLCPCB ad seems wrong. They were limited to 1 factory and orders were super far behind last I checked. My old professor was ordering some boards for students and he had to swap to an in-country board house because JLC was running several weeks behind schedule.
At about 00:42 in this video...
*_"At first sight, his documentation just blew me away."_*
In a video about small wind turbines...I see what you did there. 😊
I think it's extremely cool that you can 3D print a wind turbine. Lifetime is a question tho :)
The output voltage with the DIY is just 0.7-0.8V, what diodes did you use? If you used regular diodes switching to schottky would be a significant improvement.
Or as others have already said, probably a bigger one might make work better.
Not a standard in Germany..... *insert German engineering superiority joke here* .... *insert how did that work out for you in the 1940's joke here*
You forget to put actuator in center of rotor so later you can change the angle of blade according to wind speed and using brush dc motor is better.
As mechanical engineer and serious electronic hobbyist I would like to share my view for the contents of this video presented:
I wouldn’t feel much confidence in theses tests, for several reasons explained ahead, although your conceptual purpose was commendable.
(1) The wind blower applied “wind” in just a small part of the blade - where radial distance (and angle) should be the same in both cases, not only speed settings (“3”) and blower to blade distance. Not doing that increase lateral bearing loads (higher friction losses) and apply “non reproducible” and “non equivalent” wind to both devices.
Suggestion: why don’t install higher above the roof of a car (or even bicycle) and test at a given running speed?
At least for few seconds both could be monitored in the same condition, maybe recording each Volt x Ampere pair under equal resistive loading in any data logger (even Arduino would work).
(2) Compare fixed pitch blade vs variable pitch... But the best pitch angle was not properly working to make it as a fair comparison. Maybe even the blades were NOT at same pitch...
(3) Another important point in the comparison was missing: which is the circle AREA the blades cover? That is essential to know how much wind energy could be harvested. And would give an idea of Efficiency [(Watts/m^2) / (Wind_Watts/m^2)] for a GIVEN Wind SPEED - consulting a curve of Energy efficiency per wind speed would be better for compare each in where Efficiency is not so low.
(4) And After such much trouble to 3D manufacture all those parts, the lack of smooth surface finish in the blades or in gear train increase mechanic (coupling and aerodynamic) losses significantly, a pity for so much effort invested.
(5) A final point: as this is to be used outside, for All Weather Conditions, their sealing systems to water ingress (in electrical and mechanical components) should be evaluated too.
So, even for a comparative result of “who is better”, I wouldn’t see as valid, at least how it was made here.
I believe you should revisit the adjustments of the DIY version and re-run tests in conditions more similar to how each version was designed. Then, just share some figures of acoustic noise (if significant - iPhone App ~ ok) cost (most important), time spent, resources necessary and wind-area needed.
If you decide to rerun and would need to exchange Ideas, we could see how I could share some more thoughts, details and suggestions.
From my experience of making small wind turbines these are the obvious things I could see that were wrong.
1) Any turbine with a blade diameter less than 1 meter is a waste of time. The efficiency drops off dramatically and power available in the first place is too little to be worth having.
2) Any sort of gearing or belt is a bad idea due to efficiency loss and reliability. Direct drive is the only way to go.
3) The generator must have very little cogging torque otherwise low wind start up will be poor. Stepper motors have quite a bit of cogging torque.
4) Plastic makes a very poor blade material unless reinforced with glass fibre. Wood is the best for a home built rotor.
I think the buy is also better because of the compact nature of it. It had a case, right? So you're more likely to have that one on hand if you're out and about and need the power.
Your videos are some of the few things that I appreciate in life
JLCPCB part literally blew my mind. Nice script :)