Features: 1. Double-layer circuit board design, simple circuit, easy to weld stable and durable. 2. This is a mini ultrasonic levitating standing wave controller making kit, which can levitate minor items. 3. The kit includes ultrasonic transmitter, receiver, control circuit board and most of the selection of in-line components, higher welding success rate. The preferred in-line component is convenient for welding, higher reliability, and can suspend slight items, such as foam, which can be suspended for a long time. Small and compact, experience DIY fun, easy for students or DIY electronics enthusiasts to learn about ultrasonic standing wave suspension. Product introduction This is a mini ultrasonic levitating standing wave controller builder kit that can levitate minor items. The package includes ultrasonic transmitters, receivers, control boards, and most optional in-line components for better welding success. The kit mainly provides users with an experimental platform to help them understand and explore the application of ultrasonic technology in the field of levitation control, as well as the principles and applications of standing wave effects. Product parameters: Kit name: Ultrasonic suspension standing wave controller manufacturing kit Power supply :DC9~12V Operating voltage :9V or 12V Working current: 36mA for 9V, 45mA for 12V Adapter input voltage: AC110-220V Power interface: DC5.5 x 2.1MM PCB length: radius 25MM, pure manual measurement, there is 1~2mm error Kit height :46MM or 46+5MM adjustable The levator operates at a frequency of 40KHZ in the air, can capture light mass objects with a density diameter of 2-3MM, and can suspend light items, such as foam, for a long time. Note: DIY spare parts need to be welded and assembled by themselves, and need to bring their own weldin