author
8Instructables70,729Views91CommentsBratislava, SlovakiaJoined May 16th, 2016
I am an eight grade student and I just love making cool (sometimes maybe even useful) devices.

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  • Jakub_Nagy's entry How to Make a Picoballoon is a winner in the Epilog X Contest contest 14 days ago
  • Jakub_Nagy's entry How to Make a Picoballoon is a finalist in the Epilog X Contest contest 18 days ago
  • Jakub_Nagy's instructable How to Make a Picoballoon's weekly stats: 19 days ago
    • How to Make a Picoballoon
      1,164 views
      10 favorites
      15 comments
  • Jakub_Nagy commented on Jakub_Nagy's instructable How to Make a Picoballoon21 days ago
    How to Make a Picoballoon

    Thanks. Even the Adafruit board is what I would call an overkill. It has too many unnecessary pins. The Lopy board has both wi-fi and bluetooth. That does not only add weight but also power consumption. So it is possible but not exactly the best option. From the specification I think that the range should be simmilar. Also, range on ground does not equal the range up in the air.

    Could be. Don't know. I can do some research. This could be helpful: https://www.link-labs.com/blog/sigfox-vs-lora

    There is a chance. But if the flight takes longer than a couple of weeks the chances are that it will fall in the water. Yeah, that's exactly what's written on the balloon by the manufacturer. It could be dangerous for electric cables. But I wouldn't worry about that especially not regarding the descend.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable How to Make a Picoballoon22 days ago
    How to Make a Picoballoon

    Interesting. I didn't know that.I don't think that it is really possible to just cut off communication for 60 million people. You have satelites, underwater cables, radio towers and amateur radio towers. So it'd be hard to destroy such a large infrastructure. But if someone did, that would probably classify as a war act possibly starting a war so the Eurovision Contest would be the least of your worries.It isn't really possible to send picoballoons from Czech Republic to Britain. This is caused by the planetary wind currents. No matter the weather, the wind in Europe flows more or less to the east.An array of picoballoons could be set up. They would have to be anchored though so they don't fly away. Something like this is already in research to be used mainly in developing countries tha...

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    Interesting. I didn't know that.I don't think that it is really possible to just cut off communication for 60 million people. You have satelites, underwater cables, radio towers and amateur radio towers. So it'd be hard to destroy such a large infrastructure. But if someone did, that would probably classify as a war act possibly starting a war so the Eurovision Contest would be the least of your worries.It isn't really possible to send picoballoons from Czech Republic to Britain. This is caused by the planetary wind currents. No matter the weather, the wind in Europe flows more or less to the east.An array of picoballoons could be set up. They would have to be anchored though so they don't fly away. Something like this is already in research to be used mainly in developing countries that don't have internet access. Also, solar powered drone arrays are an considered option.Lastly since internet is a network of computers, the hard work wouldn't really make sense in the end. In order for this system to work, EU would have to collaborate. If you want to connect with mainland, mainland must want to connect with you. Even if the UK was cut off, internal UK communication systems would still work. Websites with servers in UK would be accessible.Your message got through :).

    Super. Ďakujem. Pokračujem po anglicky lebo je to tu medzinárodná komunita.We didn't have to deal with that. The balloon is so small that it doesn't mean any harm to a large aircraft. Everything with the balloon and probe weight less than 100 grams. That's the size of a larger party balloon. If a kid accidentally launches a party balloon he doesn't get a penalty. You absolutely don't need any permission at all. I don't know how it works in USA but I think it is the same.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable How to Make a Picoballoon23 days ago
    How to Make a Picoballoon

    Thanks! Yeah I tried explaining everything in a more relatable and less technical way but I also included the specific info.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable How to Make a Picoballoon23 days ago
  • Jakub_Nagy entered How to Make a Picoballoon in the Epilog X Contest contest 23 days ago
  • Jakub_Nagy made the instructable Valentine's Day Papercraft - Robot Cupid 2 months ago
    Valentine's Day Papercraft - Robot Cupid

    A very EPIC paper robot.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case2 months ago
    Acoustic Levitator Case

    I'm very happy to hear that!Hmmmm. I experimented with various programs and file types in order to keep the scaling correct.The dimensions you have should be less than 0.5mm off. It was drawn in vector with no stroke so if you set the stroke in your program to zero, you should get the part with the right dimmensions.OK, the dimensions are really very rounded and nice numbers:back part = 126x186bottom = 195x126control panel = 126x67left side = right side = 195x186middle part = 120x123part with hole = 144x126small part = 126x33upper part = 150x126Everything is in mm. I hope this helps.

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  • Jakub_Nagy's instructable Hyperspectral Flashlight's weekly stats: 3 months ago
    • Hyperspectral Flashlight
      1,420 views
      5 favorites
      0 comments
  • Christmas Ornament That 3D Prints Christmas Ornaments

    Like, whaaaat? This is just awesome. You got my vote.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable RGB LED Cube4 months ago
    RGB LED Cube

    Here: https://youtu.be/m5avtCDGUJs

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  • Jakub_Nagy commented on Jakub_Nagy's instructable RGB LED Cube4 months ago
    RGB LED Cube

    Well, sure it does. I did think that the photos are enough. You see, taking pictures of this thing is very hard because the bottom part needs to be photographed with a flash in order for you to see it, but the top part needs to be photographed in complete darkness. That's why the thumbnail for this instructable is made from two photos, one with a flash, and one without flash. And I can't do that with a video. So the video quality is poor. But sure, here is your viedo:

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  • Jakub_Nagy commented on Jakub_Nagy's instructable RGB LED Cube4 months ago
    RGB LED Cube

    Oh, I forgot. Thanks for letting me know. It should be here now.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable RGB LED Cube4 months ago
    RGB LED Cube

    Thanks! Well, sure but I prefer the acrylic. You could also cut the acrylic with a handsaw.

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  • Jakub_Nagy entered RGB LED Cube in the Make it Glow Contest 2018 contest 4 months ago
  • Jakub_Nagy commented on Jakub_Nagy's instructable RGB LED Cube4 months ago
  • Jakub_Nagy posted an instructable RGB LED Cube4 months ago
  • Jakub_Nagy commented on Penolopy Bulnick's instructable Molecule Ornaments4 months ago
    Molecule Ornaments

    Printed all of them yesterday. I will use them on my christmass tree. I like it very much, thanks for sharing!

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Arduino Weathercloud Weather Station4 months ago
    Arduino Weathercloud Weather Station

    That's a really long comment. Thanks for all of the tips. I'll try to use them while building my second station. I'll try to reposition the temperature sensor. I have a wind speed sensor already (it's the one from Adafruit), I'm working on it. It should be added to this page in about a week. There should be some lightning rods on the roof, I'll check it. The UV sensor is already south. I know nothing about how UV rays affect cable insulation. Could you explain? I'm using a shielded data cable with PVC insulation. WOW, that's a really nice station. The page looks nice too. Again, thanks for your time and all the tips.

    Thank you for the information.

    Cool. I'm happy that someone already used it.

    Thanks. I like it more when I look at the data from my computer or phone but sure, it's doable

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case4 months ago
    Acoustic Levitator Case

    Thanks. I didn't experiment with moving particles. I don't need it. You can change the frequency by applying voltage to the arduino nano pin. The particles then move up and down a bit. There is an instructable called "Ultrasonic Array" which explains how to build a similar levitator that can move the particles according to instructions given to it by a computer simulation. I can't explain it very well. Look it up.Well, I'm working on a second weather station, a hyperspectral flashlight (coming very soon), and a 16x16 RGB matrix T-shirt.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Arduino Weathercloud Weather Station4 months ago
    Arduino Weathercloud Weather Station

    Thanks. They are. Well, I don't know where you got the NiCad battery from. I didn't use that in my station. Yes, I think it's simpler and more stable to have it connected to a inside power source. I didn't realy care about power consumption in this project so it isn't a good idea to power it from a battery whatever the conditons are.

    Thanks for all the tips.- The station was mounted more than a year ago (October 2017) but I couldn't get it working for a long time. That means that the wiring (and everything else) lasted the whole year. Yes, the cable between the middle and the top section is very loose. The only thing that I noticed is that the contacts of the UV sensors were corroded after the year- I didn't know that. I'll try to look into it.- Well, I don't think that I can help it now but thanks for the tip.- This station is very experimental I'm adding/removing/replacing sensors so I'm not confident that I have a finished unit. Also, the circuit board is inside in a server rack so I don't think that I have to wory about weather.Thanks. Sure, you may.

    Thanks so much!

    Thanks. Are you from Slovakia?Ďakujem.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Arduino Weathercloud Weather Station5 months ago
    Arduino Weathercloud Weather Station

    I added the estimated cost (it is 120€/130$) plus I replaced the parts step with a google spreadsheets Bill Of Materials.

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  • Jakub_Nagy's instructable Arduino Weathercloud Weather Station's weekly stats: 5 months ago
    • Arduino Weathercloud Weather Station
      7,864 views
      76 favorites
      11 comments
  • Jakub_Nagy commented on Jakub_Nagy's instructable DS18B20 Radiation Shield5 months ago
    DS18B20 Radiation Shield

    Thanks. I'll try that.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Arduino Weathercloud Weather Station5 months ago
    Arduino Weathercloud Weather Station

    Thanks. Well, that would've been a very nice and HUGE house. It's my school actually. But still, thanks.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case5 months ago
    Acoustic Levitator Case

    You don't really need to test it. I didn't. Cause I don't have an oscilloscope. And didn't even have to test the transducers, because they were marked corectly. You have to stop worying so much. My levitator worked perfectly on the first try and I'm sure that your will too.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Arduino Weathercloud Weather Station5 months ago
    Arduino Weathercloud Weather Station

    Thanks. Yeah, it took me more than one year to make it work.

    Thanks. I appreciate it very much.

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  • Jakub_Nagy commented on 3DSage's instructable 3D Printed Magnetic Levitation!5 months ago
    3D Printed Magnetic Levitation!

    That isn't an arduino but a variable power supply. I checked the MOSFET I have the right one. Okay, I'll rewind the coil. But could you give me more specific instructions? How many layers should the coil have? Also I couldn't find the 30 gauge wire so instead I used a bit thinner 32 gauge one. I tried smaller and lighter magnets, but that didn't work at all.

    Hi, I built your device, but I have som problems running it. The oscillation frequency seems to be to low. The magnet either oscillates to much and crashes to the coil or if falls. I tried both changing the position of the sensor and changing the input voltage. I also tried sticking some bolts to the magnets in order to change their centre of mass. Could it be the mosfet? My coil is very messily wound up. I wound it with a battery drill. Could you help me? Thanks. Here is slow motion example video of how it works for me: https://youtu.be/PD3NiHXUZXw

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Arduino Weathercloud Weather Station5 months ago
    Arduino Weathercloud Weather Station

    I haven't tried using interrupts, but I'm not sure if that would work. Yeah, it activates mid flight. It's on for just 60 miliseconds. I mean the gauge cost me 10€ and the arduino nano 4€. I don't know if I could've purchased a better one for that price. I tried using a flip flop circuit instead of an arduino, but it didn't work out. But thanks for the tip, I'll try using interrupts on my next station.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case5 months ago
    Acoustic Levitator Case

    These aren't connectors, those are just soldered wires under a heat shrink tubing.Sure, if you don't wan't two light sources.The DC barrel is the power connector. It's on the side.It's under the user profile.Thanks for the mail.

    Well, if you use just two white LEDs and no UV LEDs then you just have to connect both LEDs negative terminals to the arduino nano GND and the postive terminals to the arduino nano 3V3. I'll try to make a diagram.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case6 months ago
    Acoustic Levitator Case

    I'm not the maker of the original acoustic levitator, but I'll answer your question. The original polarity marking method didn't work out for me too. I found out that the easiest way to determine the polarity is simply connecting a multimeter to the transducer and blowing into the transducer. All of my transducers were marked correctly from the manufacturer so I didn't have to correct them.Here are step-by-step instructions: 1) Connect a multimeter to the transducer according to the original marking by the manufacturer. 2) Blow into the transducer and watch the voltage on the multimeter. 3) If the voltage rises up, it means that the marking from the manufacturer is correct. 4) If the voltage descends below zero, it means that the marking from the manufacturer is wrong.5) If the marking ...

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    I'm not the maker of the original acoustic levitator, but I'll answer your question. The original polarity marking method didn't work out for me too. I found out that the easiest way to determine the polarity is simply connecting a multimeter to the transducer and blowing into the transducer. All of my transducers were marked correctly from the manufacturer so I didn't have to correct them.Here are step-by-step instructions: 1) Connect a multimeter to the transducer according to the original marking by the manufacturer. 2) Blow into the transducer and watch the voltage on the multimeter. 3) If the voltage rises up, it means that the marking from the manufacturer is correct. 4) If the voltage descends below zero, it means that the marking from the manufacturer is wrong.5) If the marking is wrong, correct it.6) Repeat this process until you've measured all 80 transducers.

    It doesn't really matter in our country but you can call me Jakub. I live in Slovakia. I had to google the term Gastroenterologist. Sure, everyone has to start somewhere. Also, you can use private messaging on instructables.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case6 months ago
    Acoustic Levitator Case

    Step 6 - Yeah, it's the middle back section.Step 8 - It's in the bottom section. The LM2577 board is glued and both the switches and the potentiometer are screwed to the panel.It's fine. I like that someone shows some interest in this project.

    I don't have a diagram but the middle leg of the potentiometer should be connected to the middle hole on the PCB. I don't know how the other legs should be connected. You can try both combinations. You don't have to worry about destroing the board.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case6 months ago
    Acoustic Levitator Case

    Sure. The trimmer is marked on the picture. The unit that you found is the right one. It has to have a display. The trimmer has three contacts, and so does a potentiometer. You will have to connect the legs from the potentiometer to the LM2577 board with some wires. The potentiometer can be basically any 10K potentiometer but I strongly reccomend this "3590S-2-103" one.

    Thanks. Wish you luck too.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case6 months ago
    Acoustic Levitator Case

    Well, I don't see a big demand for it so I'm not planning to sell it online, but I could cut it and send it to you. The problem is that I live in central Europe and the shipping costs for packages beyond Europe are big. If you could give me your location I could give you a better answer.

    I deleted all of the original files and replaced them with a ZIP folder. They should be the right size now. I don't have any experience with manual acrylic cutting but sure, I don't see a reason why not.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case8 months ago
    Acoustic Levitator Case

    Thanks. I don't have a schematic. At the time when I was making this instructable I didn't know how to use any circuit design software so I had to draw every schematic manualy and that's hard. Now I'm learning some basics with Autodesk Eagle so I can try to make one. But I don't think it's really necessary. All of the connections are exactly the same as in the original acoustic levitator (which already has a schematic) except for that there is a LM2577 and a switch between DC barrel and the input of L298N. Also, I added four LEDs and a switch and I made I scheme for that.

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  • Make a Holographic Dance Party With Your Friends

    This is just so cool! Awesome idea.

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  • Jakub_Nagy commented on deba168's instructable How to Make a Bench Power Supply10 months ago
    How to Make a Bench Power Supply

    What infill percentage did you print the case with?

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  • Jakub_Nagy followed MatejH1310 months ago
  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case12 months ago
    Acoustic Levitator Case

    I saved one of the files in SVG. You can try that. It should be 126x33mm. Also I recommend using CorelDraw since all of the models have been drawn there.

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case12 months ago
    Acoustic Levitator Case

    Sure. It should be in the files offer by now. The file name is small part.pdf.

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  • Jakub_Nagy's instructable Acoustic Levitator Case's weekly stats: 1 year ago
    • Acoustic Levitator Case
      7,095 views
      105 favorites
      8 comments
  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case1 year ago
    Acoustic Levitator Case

    I agree that the frequency is within hearing range of pets but the acoustic waves are pretty much trapped inside of the levitator. We have cats home and even when I turn it on next to them, they don't respond. And even if they did, you can just put them in the other room.Thanks to ThingEngineer we know that even slightest changes of the frequency can drasticly lower the power of the levitator. It teoreticly could work at 100khz but it would mean completely redesining whole device, so basically starting from scratch."Over all the design seems to be dead on perfect for creating the most trapping strength as is. Even a slight modification in distance by stretching or squeezing the two halves apart or together results in a drastic drop in visible acoustic pressure levels. I also experi...

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    I agree that the frequency is within hearing range of pets but the acoustic waves are pretty much trapped inside of the levitator. We have cats home and even when I turn it on next to them, they don't respond. And even if they did, you can just put them in the other room.Thanks to ThingEngineer we know that even slightest changes of the frequency can drasticly lower the power of the levitator. It teoreticly could work at 100khz but it would mean completely redesining whole device, so basically starting from scratch."Over all the design seems to be dead on perfect for creating the most trapping strength as is. Even a slight modification in distance by stretching or squeezing the two halves apart or together results in a drastic drop in visible acoustic pressure levels. I also experimented with slightly above and below 40KHz with the same result." ThingEngineer

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  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case1 year ago
    Acoustic Levitator Case

    Thanks. I made multiple designs from multiple materials and ended up with this one. And, you were right that chunks of wood don't look so good as the same chunks of acrylic. There are just two things to keep in mind when using acrylic. 1) You can't drill in it because it may break. You have to laser cut all holes.2) Acrylic can be scratched.

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  • Jakub_Nagy followed Asier Marzo1 year ago
      • Ultrasonic Array
      • Acoustic Levitator
      • Acoustic Tractor Beam
  • Jakub_Nagy commented on Jakub_Nagy's instructable Acoustic Levitator Case1 year ago
    Acoustic Levitator Case

    Thanks. I'm glad to hear that.

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  • Jakub_Nagy commented on Asier Marzo's instructable Ultrasonic Array1 year ago
    Ultrasonic Array

    I already have acoustic levitator built and I'm satisfied with it and also my budget is little drained, so I don't want to build this I'm just wondering. Is this also more powerfull than TinyLev? And also you say that bigLev can lift solids up to 6g, so how much weight can TinyLev and this ultrasonic aray lift?I started ordering components before the kit was available so I got it for like 110$.

    What's the price of the standing wave levitator?

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  • Jakub_Nagy followed Computers channel 1 year ago
  • Jakub_Nagy commented on Asier Marzo's instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    Hi,levitating fluids is a very hard task. I could not get it working the first two weeks, but after some practise, I did it. The key two things when levitating droplets are:1) The angle of the needle2) The voltage you put into the levitatorAlso, levitating small droplets at high voltage is a lot easier than levitating big at lower voltage. That's because with small droplets, you don't have to care about surface tension. When you put a big droplet inside levitator when voltage is about 12V, the big droplet will immediately break down into hundreds of smaller droplets, and some of them will stay levitating.Hope that this will help you

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  • Jakub_Nagy made the instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    Hi,I'm preparing version 3.0. In this version, I want do add LM2577 (variable step-up converter), li-ion battery and charging module, so it'll gonna run on rechargable batteries. I'll post a separate instructable about how to make this nice little case. Some process pics:

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  • Jakub_Nagy commented on Asier Marzo's instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    OK. Give me your email adress. But there are some mistakes and I can't fix them because my trial version of corel draw already expired. But I'll try to redraw it in some other program.

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  • Jakub_Nagy commented on Asier Marzo's instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    Ok. What's the device under the particles? Is it something new? Why are the transducers aranged in such shape?

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  • Jakub_Nagy commented on Asier Marzo's instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    Did you meant the UV paint for the case or for the particles?

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  • Jakub_Nagy made the instructable Acoustic Levitator1 year ago
    Acoustic Levitator

    Hi,I build a case for the levitator using laser cut MDF. It's very robust and it hides all the electronics inside. It also serves as a stand because of it's rectangular shape. It also has a control panel where a switch can be placed and I also plan to add there a DC-DC step up module with display. I added two LEDs so others can see tiny particles levitating even in dark enviroment. I realy recommend this if you want your levitator to be nice and safe. If you want it to look more futuristic, you can cut it from acrylic, so you can see what's inside. But I like the mdf design more. Here are some pics:

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