Describe: The text in the picture is formed by using a motor to drive the LED to rotate and a microcontroller to control the lighting and extinguishing of the LED. At first glance these words words suspended in the air with no worries up down left or right giving people a beautiful feeling. Memories and enjoyment. For electronics enthusiasts The happiness and joy that the successful production of such a work brings to you is simply indescribable. Specification: Power supply: DC 5V(DC power socket) Number of : 16 red 16 blue Display characters: 60 Chinese characters or 100 English characters (scrolling display) type: A-LED Display DIY Kit+Program Downloader Material: PCB+electronic components+acrylic colour: Multicolor Package Contents: 1 x LED Display DIY Kit(It's diy kits. Need to solder by yourself) 1 x program downloader Only the above package content other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.