Ultrasonic Levitation Acoustique Electronic DIY Kit Levitator Simple and Affordable TinyLev Portable Acoustic Tractor

Haven’t put it together yet. Looks good. Will update after. Shipping was fast

Package arrived very quickly (less than 2 weeks for France) and very well packed in a stong cardboard box. All works well (I built & tested it before giving feedback) - EXTREMELY PLEASED ! Notes : the power supply is with US plug (should have asked if european plug was possible) - the transducers do need to be polarity tested (about 1/3 wrongly labeled) - Nano needs to be programmed with code from "Instructables" (select board Atmega328P old boot loader) - had 4 extra transducers = very useful for tests with scope as receiver and as spares (once mounted, scope tests showed one of the 72 was not transmitting properly) - power consumption is about 0.7A @ 9V, so hbridge module gets hot (but is OK).