Ultraino: DIY ultrasonic airborne phased-array 64 channels

[@JeremyCook]

Wow, wasn't expecting so many different applications. nice.

[@UpnaLab]

but it is mainly for research purposes, quite hard to build but very versatile. I will publish soon a simplified version for a directional speaker with better sound quality.

[@JeremyCook]

Sure, research now, but who knows what could come of this type of tech in 20 years? Pretty neat!

[@fzigunov]

Incredible stuff. Thanks for putting this out there in the world for everyone to play with. You inspired me to work on an FPGA application for this!

[@RomanVladimirovichF]

Thank you very much for simulate the acoustic field in real time, and the consistent instruction!

[@jac6255]

I don't really understand, how are you modulating the phase of the 40khz transducers when the arduino only has a speed of 16mhz

[@und3rgr0undfr34k]

amazing! Your a genius!

[@morphers21]

So I get the sync signal fine on driver board, but i dont get any signals from the mosfet. I have a 5v signal coming from a few random ones. What could be the problem? @epnalab

[@UpnaLab]

Could you troubleshoot as in the video?? also you can probe the pins of the mosfets to see if at least they are receiving the logic signal. Probably the cause is that the mosfets are not correctly soldered, it could be tricky if you have never done smd

[@AdityaMehendale]

Brilliant work, sir!

[@lumixxism]

Amazing video! I'm curious, could you make this work with high power transducers, like the ones used in ultrasound cleaning machines?

[@shraiwi]

I would doubt it because they take a lot of time to get to their maximum amplitude.

[@JasonHead]

Very cool stuff- I think I would reflow the board personally since I don’t have experience soldering surface mounts :)

[@UpnaLab]

Yeah, it is a much better idea to reflow indeed. The next board is too big so I will show it with a stencil and reflow oven.

[@andersji7028]

I noticed that in your paper-“Holographic acoustic elements for manipulation of levitated objects”, the ellipsoidal particles are controllably rotated by changing phases, I wonder how it is achieved by using the software you mentioned, I have tried many times...it, however, cannot work. even I have rotated the paticle by clicking "Ry+" in the "MOVE" tap after the partcile has been selected, the phases are still not changed with it. I cannot figure out why... I'd apperciate it if you can help me!

[@AppliedCryogenics]

I read that cats can hear frequencies as high as 64kHz. Does the 40 kHz from this device cause distress to cats?

[@jomfawad9255]

if i put this on my forearm and i close my finger it will detect the muscle contraction?

[@lingeranddie]

Could this be used to make a particle filter rather than a trap? Particles of density / size that enter at a specific point are forced out of the array along a vector?

[@UpnaLab]

Indeed, I have not seen that approach for our scale size but in smaller systems operating in water, using a focal point is used to sort particles by size/density since the force is proportional to their volume: kzbin.info/www/bejne/bHyslqinr9pra5o kzbin.info/www/bejne/pYbdepx_eNZ4iLs

[@lingeranddie]

Fantastic - the technology could be used to exclude large aerosol particles form analytical instruments.

[@yht_confident]

What is your simulation software

[@bookinbag6958]

Thank you for your video. How can I find the 3D Acustic SIM programm?

[@UpnaLab]

www.instructables.com/id/Ultrasonic-Array/

[@serj112]

Would finer phase resolution (i.e. something like pi/2500, which is feasible with a cheap FPGA instead of the Arduino) yield finer movement control? One could also interpolate the phase transitions in the FPGA to keep communication overhead low.

[@UpnaLab]

Indeed, we have an FPGA-based driver board that can do really really accurate positioning. I will try to publish it soon.

[@jcims]

Could you use this to grab mosquitos in flight and put them 'somewhere'?

[@UpnaLab]

It is the dream of a previous boss of mine : ) A system able to trap a mosquite flying be would need to be close-loop (i.e. track the position of the mosquito).

[@rahulraks179]

Sir another one doubt what to do with the codes given below do I have to dumb them in a programming softwares

[@eliasmarce]

Hi Asier. I write to you from Paraguay. About the directional loudspeaker, how do you modulate the sound? That proyect is based on the spatial impulse response?

[@UpnaLab]

It is a simple method, just amplitude modulation. It is not aimed at sound quality. Soon we will publish an Instructables www.acousticlevitator.com with a good directional speaker.

[@eliasmarce]

Why have you decided that the matrix should be 8x8? What field simulator did you use?

[@UpnaLab]

Because that 8x8 is 64 which is the number of channels of the board. Having less transducers does not usually enable single-sided levitation. The field simulator is custom code, also available. In the video description there are links to those things. Best.

[@eliseoherrera9138]

Hello good afternoon, this project is very good, can you share the software that you are using to generate the matrix?

[@UpnaLab]

Sure, in the video description there are links to the paper (with more technical info) and an Instructables (with links to the software, parts and instructions). The software is in github.com/asiermarzo/Ultraino/tree/master/AcousticField3D Best!!!

[@eliseoherrera9138]

Hola como estas, puede ser que se haya caido la pagina GITHUB? En que otro lado puedo conseguir la informacion?

[@XtianTechno]

Dear Asier. Where can i find driverx16 board data, schematic and pcb. Thanks.

[@UpnaLab]

For that I used an Arduino Nano and 4x L298N connected with jumper wires. It is easy to put together but I am afraid I do not have a PCB to make it neat. Best.

[@XtianTechno]

Asier Marzo thank you, now i understand how to do pcb. I will make my own.

[@kenanlakota9566]

Hey, how I can contact you?

[@MuhammadAsad-qh9wx]

Great Work

[@webconectionsat3646]

Good project 👏

[@NoviSavvy]

Adding to my favorites Can I make a scanning beam ultrasonic radar with that?

[@UpnaLab]

That is a super cool application, you will need at least one receiver to get the intensity of the echo.

[@y.e.d5660]

I have one question my friend. I ll buy 500 piece of those transducers for a diy project. but if you have gain caracteristic for ex 20 khz 60db 30khz 80db 40 khz 100 db et or grafs for khz to empedance it would be useful for me.

[@UpnaLab]

What models? I measured some here aip.scitation.org/doi/suppl/10.1063/1.4989995/suppl_file/tinylev_small.mp4 but for impedance curves I did not keep any. Send my an email asier.marzo @ unavarra.es and will be able to provide some impedance charts.

[@nopoliticalparties]

With a specific freq and more power and transceivers you're definitely able to shoot through the walls with this, the same technology being abused in cities globally

[@azamatjonmalikov9553]

Cool stuff

[@pablotorres9830]

Thank you, that's amazing. Is controlling by Java?

[@UpnaLab]

Yep, the software platform is in Java but I am porting some parts to Matlab since it is the preferred environment of Physicists and Mechanical engs. Glad that you like it, I feel that it is quite specific, only of interest for researchers. I am preparing a directional speaker and a big array, I think those would be better : )

[@bladethirst1]

What is they type of the ultrasonic speaker? Is that important?

[@UpnaLab]

10mm diameter 40khz, in the link to the instructables you have the different models that can work and where to purchase them.

[@bladethirst1]

@@UpnaLab Thx, and what is the pin inter-space of the MOLEX 2*8, I cannot open the link of it

[@UpnaLab]

@@bladethirst1 2.54mm

[@bladethirst1]

@@UpnaLab (1)I have soldered the driverboard, the sync signal is 40kHz and 5volts=arduino power, but the output pins are 20kHz and the voltage is approximately the same as the DC power of the driver board, are these expected? (2) what is the suggested DC power voltage and maximum current? （3）After testing , I found 5 out of the 64 output pins of the driverboard is not functioning correct(zero or strange waveform), how could I find the corresponding MOSFET ? (4) I am trying to build an array for directional speaker, but in the video, a different driverboard is used for that section, is the previously built driverboard OK for the directional speaker? And which firmware should I use for the directional speaker?

[@박창현-s9z]

@@bladethirst1 Hi. I have the same problem (1). Did you solve it?The sync signal is 40kHz but output pins are 20kHz. Is it okay?

[@vilautad3872]

Can we use another arduino mega to phase detector and pin assignment function?

[@UpnaLab]

Totally, just double check the pin mapping, Megas have different pin mapping than Uno&Nano

[@vilautad3872]

Yes, I checked out the pin mapping but I can't do the pin assignment function properly. I connect the Arduino normally, and press start and it works. But when I click check button nothing happens and then the program breaks . What can I do wrong?

[@vilautad3872]

Congrats!

[@Tadesan]

Are these sounds fields dangerous? PSI to decibels (relative) is a humbling conversion. A pressure gradient of one atmosphere (100kpa) produces a sound of 194 decibels relative to the threshold of audibility. Which is enough to kill you dead. One gram of water sitting on one square centimeter generates 98pa of pressure. This is equivalent to 133 decibels. Definitely still enough to kill you. These steady state conversations are deceptive because they are done at DC and so contain infinite volume and this infinite energy. A pocket of air cycling at 30khz to 133 decibels is probably quite tiny, but large enough to fit a droplet in... Did you look into this stuff during your research? All I know about acoustic levitation is they used to do it back in the day with air fed whistles. Whistles are extremely efficient...

[@UpnaLab]

Inside the levitators you can reach 140db easily and I have some levitators that reach 165db, certainly they will not kill you. Main concern is the hearing but ultrasound is focused at specific position and also attenuates quite quickly. I do not know if a whistle generates enough dbs to do so, any link to that would be great. Thanks!!!

[@andrewlankford9634]

Shrek would be impressed. The sound track of this video ought to make geeky chicks' hearts flutter.

[@blakes8901]

i said holy shit like 3 separate times while watching this

[@maddercat]

Do you think it would be possible to break kidney stones or image with this kind of technology?

[@TheFlyre]

Hello there do you have a number to call?

[@UpnaLab]

could write an email to asier.marzo @ unavarra.es?

[@carlosalfonsotopetesanchez469]

Vi tu vídeo del rayo tractor sónico. Asier soy o eres mi doppelganger. Contactame amigo

[@87arty12]

good

[@nopoliticalparties]

11:30 & 5:43

[@curtis_chip]

nice video.. but ...never put solder first on solder iron ::) never

[@julianebug8409]

I just wouldnt want to mess up and make a frequency that could kill

[@Piccolo_Sun]

i can improve it