Ultrasonic Mist Maker || DIY or Buy
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- Опубліковано 20 сер 2024
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In this episode of DIY or Buy we will have a look at an ultrasonic mist maker and find out whether it makes sense to create a driver circuit for the ultrasonic piezoelectric disc. Or if we should rather just buy the commercial product instead.
Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod (incompetech.com)
![12 Head Mist Maker Review [Dyna-Living]](http://i.ytimg.com/vi/jekXeBRZnGY/mqdefault.jpg)
Engineering experimentation and failure are positive learning experiences, part of the process, and sometimes just plain fun. What they are never, is stupidity.
Agreed!
(Congratulations on the number two top comment too!... I think...)
10:47 PM
6/19/2019
Ive failed at so many things, thanks for saying that. Life is worth the experiment.
Depending under how much pressure you work on a task a failure can eat you away much more than you would think. Nowadays development departments are no kndergarden, the persons who are the loudest/aggressive/pursuing/stupidest are promoted, thus many experts who think in silence for themselves work at home in their basement or just keep calm...
Depending on the middle to low management corpus, engineers suffer more ore less for less money than the con artists of management.
The moment the "art" designer and economy enginer is valued higher than the "application/design/electronics engineer" who do solve the problems, you should just change workplace :-\
Agree, and it would be great if Scott could overcome it and make the sequel videos, thus he reviewed what is actually the problem with the project in the previous video. Then he can explain the ideal of circuit behavior and its output and also practically correct the mistaken project.
He was being self-deprecating.
Very cool project! I appreciate that you went through the trouble of trying to build the circuit and showed your failures. That is always encouraging to see because failure is a huge part of engineering! I have so many projects that fail that don't make it into my videos. Thanks for another great video!
"Watch my stupidity?" Do not say that man, you did a great job! Thanks for sharing!
Agreed 100%.
I love how you underline everything and draw the circuits with a pen! Thanks for the collection of awesome videos!
I love your peace of art xD
Thank you ;-)
No sabía que Proyectos LED seguía a GreatScott. Que pequeño es el mundo.
Proyectos LED sounds alittle bit dirty
*peace... GreatScott pronounces it like that :P
Una leyenda frente a otra XD
I love that you still produce and upload your failures! It makes me feel better about my own. I fail so hard on such simple circuit concepts sometimes, I wonder if I'm just not smart enough to be trying this stuff! You're WAY ahead of me tho so seeing you accept defeat leads me to believe it's just part of the nature of engineering in general. Just like in my programming work, sometimes its 10% design and build, 90% debugging and rebuilding.
Now if I can just learn to be as cool headed as you about it! I find myself verbally and physically assaulting inanimate objects on a daily basis.
Don‘t know if you‘re seeing this but I really feel you. I always feel like “can’t be that hard right?” only to realize that it realistically is not that easy.
For your 555 time + mosfet circuit, you could have added a DC blocking capacitor in series or discharge resistor for the crystal, it's a similar problem with crystal radios that use a piezoelectric for the ear piece that received a half wave rectified signal
FULL BRIDGE REC... OH WAIT
SCWfan06 do you watch ElectroBOOM
RobertTunaru
Is that a question?
boom, here comes the boom,... oh wait not that movie
Hahahahah
Mother of all
Nice! I've been meaning to try this myself.
About the 139kHz; piezo transducers have multiple resonance modes. The 1.7MHz is fairly simple to figure out. This should work out the same way as the resonance frequency of a open cylinder. Basically, take the speed of sound in PZT ceramic, and use the disc thickness as your cylinder length.
The 139kHz you saw could be the radial resonance mode. This comes from the piezoelectric material getting wider when it compresses, and is mostly controlled by the diameter of the disc.
If your requirements include "cheap," DIY will almost never win. The advantage DIY gives you is that you can build something higher quality, for a reasonable price. Your "expensive" circuit could be a great starting point to add features and make something great!
I beg to differ. It does take engineering skill but there is probably a cheap DIY way of driving that transducer at 1.7 Mhz
@@metatechnologist but wouldn't it be great to scale this up for a greenhouse or sauna, a massive high quality water vapor belcher
Something I always tell my students : "If you are not failing, you are not learning."
Fun to watch you go through all the processes you did. Thanks!
What you do in the video explains the very heart of electrical engineering "Theory combined with failures + success" The reward being the success after failures. Gratifying.
Wow the mist maker in the pumpkin looks sp00ky
2sp00ky4me
SPOOPY
*SP00PY
makes me wanna D00T
Dooty
The 140 kHz resonance is a radial resonance, while the 1.7Mhz is a thickness resonance. Only the thickness resonance will interact well with the water...
As far as generating the drive signal, the simplest method would have been a Class-E amplifier. Just build up current in a small inductor and dump it into the piezoelectric device (a capacitor) at a 1.7 MHz rate...
I bought a mister kit and hooked up a oscilloscope to it to find the frequency of the driver, it reads a solid 114khz when it’s misting water
@@3nealweber3 If you can detach the transducer, you can hook it up to a NanoVNA or any other network analyzer that can measure the S11 parameter and look for the mechanical resonance frequency of the transducer (the frequency with minimum reactance). This is the frequency your mister should be running at. You will still get output at different frequencies, but running at the resonance frequency will provide more mist at the same output power. This measure isn't exactly right because the output is probably driven through a transformer and the transformer's leakage inductance should be considered, but it's close.
I don't see this as a failure. The goal was to see if it was cheaper to make this unit yourself or buy it. The test produced a clear answer: buy. That's a success. Well done! :)
A failure video. Loved it. That's what happens 90% of the time for us newbies but no one posts them and makes everyone else trying things get frustrated. This helps thanks a lot.
more diy or buy
If you opened the one you bought and had a look at the circuitry it uses, do you think it would be possible to wire in more than one piezo disk and produce more vapour? Great video as always!
For what it's worth, they do sell multi disc models, but they aren't as cheap. 3 disc are easy to find, and I think I've seen a 5 or 7. I bought a 3 in the past and it works great for those mist fountains where I feel the single discs are lacking.
Sony look at the guts of a sonicare toothbrush, way different principle.. they use a layer steel transformer style in the shape of a tuning fork with coils wrapped around it.. very interesting.
It is sealed with potting compound
If you wire in one more piezo-electric disc with the one that's already with that item, it will decrease the frequency.
@@novadelp5969 why?
Who needs more diy or buy videos!!!!!!!!!!!!!!! Think Scott will do it
Blablablablabla!!!!!!!!!!!!!
Stupidity ?! Dude you are a genius. I didnt even know half the things you were talking about, let alone come up with a circuit in my head like that.
I cant even figure out how to maje simple circuits. Im still struggling to build myself an fm transmitter I found a DIY for 10 years ago.
Thank you for the video, and you are the only one I know who is smart enough to figure out if it was better to build or buy this.
Stay safe out there man, I'll be praying for you.
✌ ✝ ❤
Very interesting, I didnt know you could create water vapor this way.
me, not too.
This is how vaporizers work without boiling water
You cannot achieve higher vapour pressure using this vibrator method than what we would get normally at that temperature. It only acts like a catalyst that speeds up the journey to equilibrium point but doesn't shift the equilibrium point.
First, the water is not turning into vapor form. Instead, the mist you saw is water in droplet form.
About driving the piezo, I would recommend transformer coupling, where a pulse transformer can be used. The reason for such a coupling method is that the distance of travel of the piezo piece is related to the peak-to-peak voltage. Basically, you will only need an oscillator, a mosfet driver (which can be as simple as an buffer opamp), and a pulse transformer.
The pulse transformer sounds like it could work. I might give it a try.
yes yes keep trying Thanks
GreatScott! This will be too simple to you. Lol. Btw, i drive my transducers through this transformer approach, which works like a charm. The tranducers has its own resonance frequency, where you dont have to worry about capacitors or what so ever.
+GreatScott The signal source can be an LC resonator.
Hi. I need your help. Can you send me your schematic about this circuit. I tried but it not work. My email: learningisglorious@gmail.com. Thank you very much!
I was trying to understand how them foggers work for a half hour now, you explain it so simple and good in a minute, thanks!
I think everything would be a BUY. I watched your vid for 3 mins, started scrolling through and seeing tons of circuits and bits and knew it's definitely easily to buy.
1.7 Mhz has to be managed with appropriate components. I suggest to use ham radio oecillator and suotable semiconductor. Maube you can salvage them from LW radios. Anyway I appreciate ypu post also failures. Thi is sign of fairless. Grazie
1.7 MHz is pretty forgiving frequency to work with. Most transistors produce plenty of gain well into the VHF range
Yeah, I was thinking the same - those half bridge/full bridge drivers are made for driving high frequency transformers in switching power supplies and similar stuff where much lower frequencies are used. Using 1,7 MHz for those circuits would not be very efficient - and large power MOSFETs and IGBTs made for high power are too slow to work properly at that frequency. They would probably never be fully on or off and mostly work in linear mode with huge losses and wouldn't handle much power at all.
The built in "dead time" of 150-400 nS in those drivers are also needed for those, to ensure one set of transistors get enough time to turn fully off when the other turns on. For 1,7 MHz those MOSFETs are probably not the best choise ether
- there are other transistors more suitable for RF (I havn't very much experience my self working with frequencies that high - most I have played with is audio circuits and power circuits, that range from DC up to about 100 kHz)
Pier Aisa do you speak english
Wow, All this is beyond me right now. I would probably just buy one as well. But as a hobbiest, I appreciate how you can share your failures and it seems like it must have been fun attempting to problem solve this issue with the knowledge you have! Two questions, "did anyone ever successfully do this in an affordable way?" And, "is there any way to make sure the components don't corrode?" There was some rust on your oscillator/atomizer which perhaps could have affected it's performance but what do I know.
You just have to add a series capacitor to the output of the 555 timer and it will make the unipolar AC signal bipolar by supressing the DC component.
I realize you were using the words Genius and stupidity as comical terms, which I enjoyed as intended! Keep it up! Your dry humor and willingness to try so many times, for our benefit, is appreciated so much and considered gracious AND Genius ⭐️⭐️⭐️⭐️⭐️
It's always the winner because they are producing it in series with cheap components and machines!
DIY/Buy: air conditioner (evaporator coil/condenser/refrigerant, not thermo-electric)
I can imagine, but would be *cool* to see Scott make one, esp. low-BTU solar powered.
Its pretty eazy
I would like thermoelectric
How about solar heated absorption type compressor, then a high btu capacity 'cold battery' to store the temperature negative energy 'cold' then a water pump to pump this fluid through a radiator and a fan to cool the air in a room.
DIY nuclear power plant
Great Work, But was a bit sad at the end of the video. Would've loved to see you recreate the internal circuit using your own components (circuit from the bought Mist maker)
That was my plan but I could not access the circuit from the mist maker. See the end of the video.
I always wanted to know how an infuser worked. Other videos kept telling me about how they infuse the air with scent. Finally this video explains the principle behind it. Thank you.
I mainly watched your video to understand the science of ultrasonic diffusers versus some strange mommy blog talking about it. Thanks!
Could you try making your own 3D printer with an Arduino and RAMPS
This. Or maybe a raspi zero or greater as the controller.
That would be creative its only been done like half a billion times all ready?
Or even a Table CNC Router
Not a problem. Most of the cost of a 3d printer has to do with the steppers themselves. The more granularity, the higher the precision. The higher the precision, the slower the speed. The faster the speed, the more processing power required and the more momentum tries to sabotage you. It's a battle where physics is constantly trying to kick your ass.
if you can make the mechanic parts its not a big deal to build diy 3d printer.
I like the idea of the "thin layer of fuck" ! Nice one, Scott !
Great video! This channel deserves recognition over 99.9% of the channels on youtube.
1:) it is not stupidity to try and fail. 2:) failure is quite often the greatest teacher we can have. dont sell yourself short here.
Hey! I made my pumpkin out of two speakers and an LED light strip this year! I was just messing around so it was just a fun hour long project.
Sounds interesting :-)
Do not confuse failure with stupidity. Failure is still a learning experience! Stupidity is not!
Failure is no stupidity. Plus you call yourself great Scott for a reason :)
Thanks for saving us the hard tests
Quick thought, might not work:
It seems to me that the problem with the first circuit is not the voltage being DC, but the piezo basically being a capacitor. It gets charged the first time the mosfet turns on, but then keeps its charge regardless of the state of the mosfet. This will keep the voltage of the negative piezo pin at ground potential, even when the mosfet is off. The first solution coming to my mind would be putting a resistor in parallel to the piezo, so it can dissipate its charge while the mosfet is off. This would pull the negative piezo pin to Vcc potential again. Alternatively, one could then connect the piezo in parallel to the mosfet instead of the restistor, which shouldn't make much of a difference.
At 5:05 it didn't work because you charged the piezo capacitance. After charging once, it'll never discharge again because you don't have a discharge path. That's why you use "AC".
Fernando Zigunov very accurate.
You need add inductance at 5.05
Plus protoplasm
I was waiting for Pierce oscillator circuit design. with 1 Mhz Op amp out.
John hutchison once showed a resonant circuit by apply a microphone as a negative feedback switch sensor near the sound source (in this case, it's the disk under water) to create disk-water complex's self-resonance. it auto adjust frequency, no need to adjust it by urself.
It says 48V input voltage. Did you use 48V?
Just love an honest living being.
Thanks for most interesting vids l enjoy every video.
'The first circuit I came up with was a true sign of my genius.'
I'm a new viewer. I almost unsubscribed when you called yourself a genius. Good thing I kept watching. I got a good laugh and I always appreciate self deprecating humor. keep up the good work!
I appreciate the video on a failed attempt on a build. most people are to proud to show it. This is awesome. I look forward to more videos...
Thanks for the theory part. I was just wondering how my air humidifier worked without boiling the water.
you can get them on aliexpress for less than 3€
Honey FPV
...and you will receive them in January....if your lucky
Upcycle Electronics i usually get my items in like a week to two weeks from aliexpress (in belgium)
Honey FPV
I just ordered a bunch from AliEx myself. I bought from 10 different sellers. A few of the sellers were fast, but most took a week or more just to ship the item. They print a tracking number but they don't actually process the order and take it to the logistics carrier right away. I wish more people would write reviews that state:
1.) Order Placed: (DATE/in Chinese Time)
2.) First Tracking Number Ping: (DATE)
3.) Delivered: (DATE/number of business days)
4.) Condition/product quality/etc.
Even the listings with better feedback lack this kind of info. In my opinion, the delay between the order paid and first tracking number ping by the logistics carrier is the most important feedback possible. That info tells a buyer everything about the quality of the seller. I try to order from sellers that have better feedback, but it's still a shot in the dark.
I placed my last order 10/9. I've received 3 things already but there are 3 more that are still in China right now according to tracking. The fastest I have received stuff so far is 9 days, and I'm in Los Angeles California USA. This is one of the largest trade hubs with China as California is the gateway to the mainland US. If the seller is responsible I should get stuff very fast.... That's been my experience so far, but this is my first real experience with AliEx as I am looking for eBay alternatives for the small stuff.
Link product plz
@@UpcycleElectronics could you please post the link
i have a lot of respect for this man
His Pease of art. Bob Pease built some dramatic looking prototypes that way. May his legacy live long.
What a cool series! I'd love to see even more of these! =D
Again a nice Video, Scott! Also a great Idea!
LBLJLALRLNLE LHLALNLSLELN du musch des in englisch schreiben...
Er ließt ja nicht nur das, was in Englisch geschrieben ist
LBLJLALRLNLE LHLALNLSLELN Aber vielleicht wollen auch nicht Deutsch sprechende Wissen was du schreibst.
Ja, in dem Fall schreibe ich auch immer Englisch aber im falle eine Kritik? (Bzw. Feedback)
Ich glaube eh das er Deutsch versteht
Failures are a fact of electronics development. They happen and we continue our pursuit of knowledge. Thanks for posting the video.
Aloha from Naalehu in Hawaii! I loved watching and did learn...thank you! It's my quest for diffusing essential oils that led me to you. Again, thanx, Linda
I put my finger on one of those ultrasonic piezos when they were working once. It hurt like hell...
Why does that happen? It feels like it's being crushed
Answers to why?
Yeaaaah bruh ! Me tooo .....
Co-worker ask me to try and fix his humidifier decades ago, on the side of the device's it said ultrasonic, thought that was just BS packaging to impress consumer's, that is till I put my finger on the element, Ouch, not BS packaging after all.
Yeah it hurts like all hell
Just what I wanted...
I am 555 timer . Nice to meet you
Hi :)
fuck you. fuck you for being so rare!
Interesting. As they say, "Failure is an opportunity to do something again with better information.", and your "better information" is much better than most people's successes. Thanks for sharing your near-misses. They educate us as much as your successes.
This is a really great video bro! Never forget this saying: *Winners Lose Many More Times Than Losers Do*
And also videos about circuit design and calculation
2:53
Scott: by utilizing Full...
me: BRIDGE RECTIFIEER !!
Scott: H-Bridge
me: aaaw
Well for sure, I learned why I drive a bus, and am not an electronics expert. This was an excellent video, as I wanted to know how an ionising diffuser works. Thanks for the vid...
This video is awesome just for the theory. We have a cool mist humidifier at home and I always kinda wondered how it worked to create mist so quickly.
That is the same schematic for the wireless thingie
Correct
GreatScott! Kahan se milega
50w bluetooth audio amplifier: DIY or Buy?
Utkarsh Amitabh Srivastava yes I am
Absolutely DIY, unless you don’t mind the usual HPF bulls***.
The Lame Gaming Channel good luck to make a 50w amplifier that has got bluetooth 4.0 and cost less than 10 dollars and not bigger than your phone
An important thing to remember about these disks is that the impedance will be different in air vs water. In air they're basically a short at 1.7MHz, less than 1 ohm real resistance. In water the impedance goes up to about 25 ohms (both have negligible reactance). Put one on a VNA at 1.7MHz and see for yourself. Usually the advertised resistance is the in-air resistance, but if you're designing for a piezo in water design for a higher output impedance. Class E amplifier is great for this.
Thanks GS, for going through lengths teaching us, it's greatly appreciated
8:17 "i hope you enjoyed my stupidity" ... I-
I wished I was as smart as he is , ( at least with electronics ! )
teach the pumpkin how to smoke?
Well, at least you tried. Because you're such a genius! (Really!)
I spent my childhood and early adult life wondering how these damn things work, never got around to looking it up. Thanks for the video :)
great video, what about a DIY or BUY for arduino
u r just "GeniuS" mahn...........!!!I really enjoy your content!!!!!!!!! 😍
Thanks
Don't know what I enjoy more, the content, or the awesome accent of his voice, haha!
DIY often isn't the best option from a financial point of view but it is the most fun.
The reason why the ebay mist maker works is because it contains the actual full H bridge circuitry kind of like your one that you tried that worked, seems the peizo driver needed the full push and pull ac wave (like power audio amps use) not just a push sine wave
How about a capacitor in series with the positive square wave circuit?
Does not work. Tried it.
BJTs are much faster than MOSFETs as far as I understand, and cheaper. Maybe a Darlington bridge or totem pole of some sort would work?
Did you play with the value of this capacitor? I think the value may influence the impedance vs. frequency response.
GreatScott! I could never get the hang of mosfets but as far as using a capacitor to create the a.c. would you not have to replace the piezo in the circuit with a resistor then where the resistor joins the f.e.t connect a decoupling capacitor from there to the piezo and then from the piezo to ground. I guess you could replace the f.e.t with a transistor
Searched this comment!
could you make a video about the individually adressable led strips? :)
Meanwhile... I get this in my recommended a week before Christmas... YOU'RE TEARING ME APART ALGORITHM!!
Excellent video, and being humble about one's failures is a great virtue. Congratulations!!
ULTRASONIC WASHING MACHINE, just to stay in this topic, very popular , expensive to buy, but maybe cheap to DIY, from china a ultrasonic transducer is not very exprensive.
Thumbs up for Scott to read!
I think the project size is too big.
6:26 dude, I know you're hardcore, but haven't you heard of breadboards? Those white things with holes in them. They're pretty handy. Also, can't you just make a radio oscillator with a couple of plain BJT? Why all the mosfet driver shenanigans?
Yes, he does use breadboards. In almost every single one of his videos.
It is just not a good idea to use one in high-frequency circuits because the parasitic capacitances.
The mosfet drivers were there to turn on the mosfets on and off really fast, because you need to charge and discharge the gate quickly.
I solder stuff in mid air all the time. if its convenient, that is.
you are great man.you always teach us something even if your project didn't work.respect you.
I saw few video about mist or humidifier but your detailed explanation opening parts and explained everything exelant and making alternative cheapest technology awesome very best tutorial video sir thank you 👍
0:15 how the heck didn't you burn your hands :D
kael'thas sunstrider The terminator can't be burned by a candle
Hi
He's left handed... 🙃🙃
Apparently, who ever manufactured this, they are pros at calculating physics and electronic engineering.
best vid about making a humidifier with a piezo so far, I liked the explanation of how the water is evaporated!
And there is nothing like stupidity by failing. „Better oops, than what if!“
Did you also try at 113kHz? Other people used piezo with this resonance frequency and it worked well. This frequency is easier to get, even with the NE555.
Thanks,
Hubert
hey Scott nice video... thumbs up . you really did it well... i never knew how mist maker works.. your designs were not stupidity it was fun ..enjoyed it. i was wondering will it work with normal piezo buzzer (speaker) ? like using 555 timer to generate frequency and then using op-amp like LM324 with +ve and - ve power supply? just a rough idea....
yeah, i was thinking the same. just use an op-amp to create a DC offset and you'll have an AC signal, yeah?
wifi ledstrip lights DIY or BUY??????????????
yes i want it
DIY
Scott writing numbers and drawing schematics on paper should be on those "most satisfying videos"
lol I like that segment idea "diy or buy" I just discovered this world of diy electronics stuff and have been asking myself that question a lot. This is a cool video even if you have no plan of making this thing.
It does not work on semen :( should i change the frequency?
Make sure the connection between the balls and the piezo is tight enough.
😂
BUY doesn't WIN...
it's just, your DIY is an EPIC FAIL😂😂😂😂
I don't get it... the 'Dislikes'. This is amazing, not too complicated and a very honest presentation of 'success' and failures backing up the decision. What is there to dislike?!
Your presentation is awesome. I use it to inspire the kids into science & technology !
3d printer DIY or buy :D
solar panel
I like that idea.
I'll be shocked if you can even get 6-10% efficiency with a diy panel. Prove me wrong.
Great video as always. But for that 555 and mosfet circuit, try giving output of 555 to non-inverting terminal of an opamp and fix inverting terminal to around 1V. (use ua741 opamp IC as it needs +Vcc and -Vee) This may create required oscillation. If it works kindly inform me. I am eager to know the results if it works or not..
Not only are you very smart but you didn't make people do the SOMETIMES dumb diy stuff that is so hip these days. I see this all the time with aquarium filters. They have this great diy idea that ends up costing more then store bought and taking away more of your time. Great video.