Product introduction: Shake the lucky turntable by NE555 and CD4017 chips combined with LED random output function. The control terminals are button control and vibration switch control. You only need to press the button or shake it, the LED will start to rotate, and the After a while it stops randomly, leaving only one LED light. | Power input: +3V~5V | Designed for Beginners：Special design for electronics starter to learn to solder electronics components. Soldering project kit will improve your electronic knowledge and soldering skills in practice | Easy to Assemble： Electronic DIY kits uses safety materials, effectively avoid corrosion and wear out. Components’ names have been marked on the PCB board and the circuit design is simple. Even beginners can easily solder successfully | Warm Reminder ：DIY electronic components kit requires buyer to assemble and welding, If you don't have any soldering experience, please read the soldering instructions and use soldering tools carefully to avoid safety problem