How to make an easy 3d-printed 12 volts generator - create your own electricity!

1970sWizard

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SUBSCRIBER GIVEAWAY When I reach 1K subscribers I'll select a random subscriber and send her/him this generator, to anywhere in the World! (*)
How to make a DIY axial flux 12v generator with 3d-printed parts - no laser-cutter, lathe or drill press required. Easy assembly and disassembly, and no messy gluing of the magnets.
Chapters
00:00 Intro
00:15 Brief theory of electro-magnetic induction, i.e. how it works
04:59 Parts list
09:17 3d-printing
10:47 Sourcing free parts
12:40 Coil winding
16:00 Stator assembly
21:23 Rotor assembly
23:06 Generator assembly
27:00 Testing
30:29 Optimization tips
I'm always working on projects around DIY and electricity & now I'll begin to publish all my ideas. So hit the subscribe button for more videos like this one:
👉 / @1970swizard
-- Links --
TinkerCad design-file:
www.tinkercad.com/things/6l8W...
-- Parts-links, if you can't source them for free (Note: I may make a small percentage of the sale - it won't cost you extra)
- magnets - amzn.to/3SquiLk or similar
- copper wire - amzn.to/3C4VAA9
- 3-phase rectifier - amzn.to/3fwx9DY
- bolts or push-rods - www.ebay.com/itm/273932001293
- bearings - amzn.to/3dTtNus
- metal coil cores - tinyurl.com/y6km2er8
It's easy to put together, as described in the video, but if you can't find the resources to do it yourself I can do it for you, i.e. www.tindie.com/products/28146/ Just be patient (within reason) as I make them to order, I don't have a warehouse full of'em.
*) Except North Korea, Iran and Russia.

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Опубликовано:

26 июл 2024

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Комментарии : 58

@1970sWizard Год назад

Hello & welcome to my tutorial. I hope you like it - it's the first RU-vid-video I ever made. Check the description for resources, including the free design-file (tinkercad). I'll get better at editing; for now you'll have to forgive the 15 second background noise at the 30-second mark. I'm always working on projects around DIY and electricity & now I'll begin to publish all my ideas. So hit the subscribe button if you want to follow along; I sure hope you will. I won't upload every month, I first and foremost have to spend my time providing for my family - but when I do upload, I'll make sure to share everything as detailed as I can.

@KrishnaKumar-ro3pz Год назад

Your way of explaining is very crisp and clean. I am expecting more great content, take your time. All the best

@threedeebyrusty8403 Год назад

Very detailed and direct. No BS, straight to good, juicy, valuable info!

@r17s67 Год назад

Detailed and straight to the point, very well explained. Keep it going!

@kingdepresingthe3626 Год назад

Very good and informative vidio. Learnd a lot 😎

@vibekelassen6677 Год назад

such a good video. Very usefull.

@noviceartisan Год назад

Very cool! Would love to see some more videos. Utterly enthralled :D

@tuxisgr8 Год назад

I like the thought of sustainability in your design. Very well done 👏. Would like to see more, regarding possibilities to drive the generator by natural force. Keep it up!

@ProDigit80 Год назад

On a bigger scale, this is great for home exercise equipment in the cycle or elliptical flywheels.

@ProDigit80 Год назад

Try to create another layer of magnets and coils. By doubling or tripling the permanent magnet layers and coil layers, switching every other layer between PM and coil layer, you can generate the most power you can out of a device like this.

@1970sWizard Год назад

Will definitely go down that path. Thx for the suggestion.

@mcorrade Год назад

Sweet 3 printed design. I especially like the way you described the 3 phase connection. I will more than likely print this guy out but I may scale it up as you mentioned. More copper and thicker wire :)

@1970sWizard Год назад

Thank you for the kind words. More copper and thicker wire is definitely the way to go! :) Love you channel - great stuff.

@geodeaholicm4889 Год назад

excellently designed, explained & built project, especially for a 1st effort. good job.

@NIKOLAZ621 Год назад

Thank you very much for your time.

@odlaaleuz6415 Год назад

Very well done. Concepts very clear and most valuable. Many videos with building stuff very few with concepts well explained like yours. Good job !!!!

@tonyasmara9066 Год назад

Great DIY tutorial...

@mohdnaimabdulaziz1476 Год назад

Keep going

@innocenthumans3721 Год назад

The vid i wanted 2 watch. At last thnx bro 👌👍🙏🏻🇮🇳

@1970sWizard Год назад

Thanks for watching - glad you liked it.

@StephenPuddicombe1 Год назад

Excellent explanation and a great job for a first video tutorial.

@kayakMike1000 Год назад

If you want to get really nuts, you can arrange your coils in a halbach configuration.

@1970sWizard Год назад

I hope to do that with a later model, will need to save a bit of money to purchase the magnets. That would likely be a coreless variant, I really want to concentrate that magnetic flux while maintaining a very smooth and frictionless operation.

@allanjohnson799 Год назад

Great job. Thank you.

@daxur-studios Год назад

Great video, thank you!

@MyrLin8 10 месяцев назад

Greetings :) Thanks, we seem kindred.

@ericsumma7654 Год назад

Thanks for the DIY video. Just like electric current flows in a full circuit, the magnetic flux also wants to make complete circuits. Consider optimizing the rotor by adding a thin iron based sheet to return the magnetic flux from north to south poles of adjacent magnets. As that flux doesn't change, theoretically it wont have eddy current losses. You could do this on the back of the coils too, but the changing magnetic flux WILL add some losses due to eddy currents. A more efficient option (as someone already suggested) would be to add another stack of rotating magnets on the back side if the coils. Including magnetic flux return to that magnet assembly would help. Finally, the coil cores you used look very thin. Filling them with iron slugs, or changing to them to thicker feromagnetic rivets would help to concentrate more flux into each coil.

@1970sWizard Год назад

Excellent commentary, thank you for the feedback. I aim to implement these kind of improvements; in my defense, I was hampered by budgetary deficiencies, i.e. I needed to make it work with scrap parts and what I had lying around. The changes you mention will certainly improve the output. My next project will specifically see the 'another stack of magnets' suggestion through.

@MrMark-pm4rs Год назад

What a great video! This was my first time doing anything like this in my life, however, It didn't work for me. I think I made the coils wrong. I also am not sure how you got the starter bolt to work. When I turn it, it just pulls the gears tighter and tighter. I think it is because my started bolt is threaded from top to bottom and yours stops after about an inch and a half. I will have to go back to the hardware store and find the right parts. Then back to the wire store for some thinner copper wire. However, I learned quite a bit doing this so thank you very much. When I get this to work, I will post a video and share it here. Then I will teach my students how to do this.

@VOZA6 Год назад

Nice work man

@Gaark Год назад

Nice! One tip though, don't create a floating 'star point' on your windings (connect the star point to the negative of the rectifier for more stable voltage), wire the coils in a delta configuration and connect that to the rectifier and you'll get better current output.

@1970sWizard Год назад

Thanks for the suggestion, @Jeff. I believe I'll do exactly that with the latest iteration.

@Bianchi77 Год назад

Nice video, thanks :)

@15bigdave Год назад

I would love to hear more about reusing scavenged parts. I have so many electrical components, but not the engineering context to know what they do or what values are important. Showing how you can take apart an appliance and use more than just the copper wire in a new project would be really neat, IMO.

@1970sWizard Год назад

I have a few ideas on how I could go down that route. Am committed to some upcoming non-related ideas but will hang on to the suggestion. And thanks for it, much appreciated.

@siernandesrocha32 Год назад

SHOW, FROM BRAZIL

@kayakMike1000 Год назад

Hmmm.... I want to get a bunch of weights and spool of parachute chord and rig up the input shaft on the generator so weight unwinds the spool turning the crank. Then outfit the circuit with a buck regulator so voltage stays below that 12 V.

@1970sWizard Год назад

I have that same inclination, am actually working on that setup as I write this. Comes with its own set of challenges! Stay tuned.

@haroldkline4898 Год назад

I also use tinkercad. It's so easy!

@1970sWizard Год назад

Indeed! There's just something about the additive workflow that get (my) creativity flowing much more than other 3d design tools.

@GnuReligion Год назад

It is good you have an industrial 3-phase rectifier laying around! 6x 1A Shottky diodes may be more accessible to the home hobbyist. Perhaps less expensive, and more efficient.

@1970sWizard Год назад

You are not wrong. I plan to soon make a short tutorial on that, to accommodate. Thx a lot for the input.

@yaroslav6807 Год назад

6x 1n4007 are even easier to find

@ericsumma7654 Год назад

I don't know how easy they can be found but scrap alternators would have the three phase rectifiers, assuming they were not the point of alternator failure. They are also sized for higher currents, assuming the current can be generator.

@primodernious 8 месяцев назад

i actually never tried to use capacitors with air core coils in a permanent magnet configuration. perhaps it would do just as good as steel. who knows. i mean a kind of tank circuit.

@JeroenvanDruten Год назад

Mooi gemaakt ,ga zo door NL😁

@1970sWizard Год назад

Mange tak DK :)

@AndreasNiederhofer Год назад

Thank you for this tutorial!!! Just a small question please: in 15:55 you point out, that it is very important "...to wire the same number of turns on each coil..." What happens, if there is on one coil 400 turns and nother 415 and another 390 and so on? How would this impact the electricity produced? Thanx in advance for your reply!

@1970sWizard Год назад

Hello Andreas, thanks for your kind words. For an application such as this - i.e. non-professional, DIY-stuff - it's not tremendously important to have the same number of turns. The thing will generate power and a rectifier will turn it into something useful. But it won't be the optimal power-generation, an unequal number of turns will create voltage ripples that will cause the generator to be less efficient. Think of it like a straight river with an even and reliable flow, then think of those voltage ripples as big chunks of rocks thrown in. You will still get a flow but it won't be as reliable and therefore not suited for some purposes. But for DIY you'll be fine. Perhaps check out my other video, I did a thing where I can coil all coils in a stator in one go.

@DaveGagliardi Год назад

I wonder if adding a flywheel would also help. I know it would increase the difficulty starting up, but would allow for smoother continuous operation once it's up to operating speed.

@1970sWizard Год назад

Adding a flywheel is a great idea, yet I'm thinking not so much for ensuring a smooth operation/output rather than for energy storage (That requires a different approach, though; the tolerances involved in 3d-printing seem to me to be low and not well suited for flywheel implementation). I'll likely revisit this notion later (so thanks for the suggestion) as I hunt for smooth operation AND frictionless startup. Why does everything have to be a trade-off! :)

@bmtrout100 Год назад

This is perfect! This is the video I have been looking for!!! So question….say you take a few of those gears away so it’s easier to turn, but you can get the RPMs up to 10,000 or so using a steam turbine or something. What do you think the output would be? Or is there a equation to figure that out? I am far more mechanically trained and only self taught electrical. Thanks and great work!

@1970sWizard Год назад

Thanks for the kind and generous words, Brandon. I'm sure there are equations to be found, but I would be hard-pressed to conquer them; I'm simply not proficient in math, and more inclined towards experimentation (I.e. too busy tinkering to learn formulas). I'd like to venture a guess, then: if one were to implement all the optimizations I refer to at the end of the video, I'll estimate the generator could reliably deliver 7-800 mAh, at 12v. Thing is, it's tiny - there's not a lot of copper in there, and the magnets are not the most powerful ones can be purchased. Going up to 10k RPM will up the ante for sure, but it's not the golden ticket. Greater RPM's will eventually limit the generator and cause 'hysterisis', i.e. basically the electrons are shaken so fast back and forth they become, well, confused. Which will cause much of the generated energy to be released as heat, not electricity. Better to scale the generator up. A steam turbine, depending on the size, usually commands a lot of torque; preferably then let the turbine driver bigger - and why not multiple - stators and rotors, with more powerful magnets and more, and thicker, copper. That's the bigger bang for your buck.

@bmtrout100 Год назад

Thanks!

@d_lollol524 11 месяцев назад

can it charge a car 12 volt lead-acid battery ?

@1970sWizard 11 месяцев назад

I'm afraid not - the electrical powers contained in such a battery are tremendous, and this generator would not be practical in recharging those. This is for cellphone-charging and such minor applications.

@daviddavids2884 Год назад

information. mostly good work. aside from the alternator design flaws. 14:32 the use of TINY wire is the Opposite of smart.!!! if only small wire is available, then, coils should be wound 'in hand'.!!! 14:39 more bad coil-winding advice.! 22:11 with the use of good magnets, this rotor configuration results in the formation of six full magnetic poles --- Between each pair of adjacent magnets. it is not clear whether such a rotor configuration is a 'good match' for a stator consisting of three two-coil phases. 31:10 !!!!! a poorly-made generating coil, as shown here, acts as a current clamp.! this means that the output current (amps), and watts, from such a coil will Always be significantly limited. a generating coil should be a brooks coil. a brooks coil is, simply, a coil that has the same number of Layers as winds. see linked illustration. googletranslate www.nessengr.com/technical-data/brooks-coil-and-calculator/

@1970sWizard Год назад

Inspiring comment. I'll take it all into consideration for the next iteration. Thanks for the feedback.