Comprehensive Training: Flow Water Lamp Circuit is CD4017, NE555, with 125 components and 274 welding points, you have ample opportunity to practice and perfect your welding skills. Quick Assessment: After completing your welding, apply power (3-12V) to easily see the results and evaluate the quality of your work. Structured Practice: Features three columns on the PCB board for practicing welding, each column equipped with multiple test points. Clear Markings: Components are clearly marked on the PCB board, making assembly straightforward and intuitive. Versatile Application: Suitable for DIY enthusiasts, electronics hobbyists, and STEM students. This kit helps you enjoy the fun of DIY electronics while learning new circuits and improving your weldin.