Open LEV

Open Source Analog Acoustic Levitation PCB

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Similar to Arduino/Atmega based Acoustic Levitation Builds

The Circuit is completely analog and requires no programing.

SMD an THRU hole versions

Built in 1-5min on/off timer for acoustic safety

Hearing protection Recommended

Single Board

  • 1 × 100nF - 0805 Capacitor
  • 1 × 100pF - 0805 Capacitor
  • 1 × 22uH - 06030 Inductor - 06030, 22uH, 3A
  • 2 × 10uF - 0805 Capacitor
  • 1 × SS34 (SMA) Discrete Semiconductors / Diodes and Rectifiers

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alpha le ciel wrote 06/25/2020 at 07:06 point

Your Project is really cool!

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S James Parsons Jr wrote 06/20/2020 at 06:36 point

What a fantastic project.  I’m curious about using a levitating drop in a laser microscope.  [[]]  A laser microscope shines a laser through a drop of water and the shape of the drop acts as the lens to project and magnify the contents of the drop.  I wonder if the drop is smooth or is agitated by the sound waves.  If this works, it wouldn't be too much work to add a laser diode to the PCB.

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John Loefler wrote 06/30/2020 at 01:20 point

That is actually an intriguing concept.  I think I will need either higher power or more speakers to achieve that.

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S James Parsons Jr wrote 06/30/2020 at 01:48 point

why would you need more speakers or higher power? 

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Derrick wrote 06/19/2020 at 02:50 point

Hi amazing work, is this powerful enough to assemble images with the liquid? Much like the acoustic tweezers in this video?

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John Loefler wrote 06/19/2020 at 11:58 point

unfortunately not at the moment. That will require a larger array (maybe 10 speakers).   

I anticipate once I build a schlieren imaging apparatus I can fine tune the speakers and create an array that creates more powerful nodes to trap water.   

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M. Bindhammer wrote 06/19/2020 at 14:11 point

I think you should write more about the operation of the device

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bobricius wrote 06/18/2020 at 06:46 point

Purpose of attiny85? you write "requires no programing" If I use 12V power supply can I remove half of schematic nad use only Ultrasonic driver?

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John Loefler wrote 06/18/2020 at 22:03 point

It was a backup just in case the 4047 didn't work.   It works but I kept breaking it it turns out the DRV8833 has a voltage limit of 10.8V.  

I was using it to 12V, opps.

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morgan wrote 06/15/2020 at 18:44 point

You could add a slot & tab to make the board to board mounting more solid. Also adding vias will prevent the solder pads from pulling up too easily.

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John Loefler wrote 06/15/2020 at 19:21 point

There is a slot.  Good idea on the vias.  That was a problem on one of the boards.  

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bobricius wrote 06/10/2020 at 18:37 point

I have never seen a more beautiful PCB in my life and so effectively designed !!! Great job!

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