Ultrasonic Leviation

ultrasonic levitation — making objects hover in mid-air using just the energy in sound waves!

Yeah, we admit it, our Micro Ultrasonic Levitator won’t levitate any
heavy items. But it’s fascinating enough to watch tiny styrofoam balls hover like magic.

In contrast to magnetic levitation, the ultrasound method does not require a control loop to stabilize the hovering object. Using acoustic levitation, the object simply lodges itself into one of the nodes of a standing acoustic wave. And you can make multiple items hover on top of one another simultaneously, evenly spaced apart!

The transducers are designed to operate at 40kHz, the frequency at which
they work most efficiently. That signal will be generated by your Arduino Nano.

1)ARDUINO NANO

2)BATTERY

3)JUMPERS

4)MOTOR DRIVER(L298N)

5)ULTRASONIC SENSOR (HC-SR04)

BREAK IC AND OTHER STUFFS IN ULTRASONIC SENSOR ,LIKE THE PICTURE HERE AND MAKE IT AS TRANSDUCER AND ALSO SOLDER IT.

The Arduino sketch below performs most of its work in the setup() stage.
First, it sets all analog ports to be outputs. Then, Timer1 is configured to trigger a compare interrupt clocked at 80kHz. Each interrupt simply inverts the state of the analog ports. This turns an 80kHz square signal into a full wave cycling at 40kHz. There’s nothing left to do for the loop() part of the code!