The lucky wheel is a tool that first predicts where the rotating disk will stop when it stops. It can also be used as a number estimation game, electronic dice, lottery machine, etc. The electronic lucky wheel achieves the same function electronically. This kit configures 10 LEDs into a circle. When the button is pressed, each LED lights up in turn in sequence. At the beginning, the flow speed is very fast, and it looks like all the LEDs are flashing together. The flow speed will gradually slow down, and finally stop moving on a certain LED. If the LED that lights up at the end matches the player's prediction, it means "winning".