Zum Selbermachen Kits CD4017 + NE555 rotierend LED SMD Löten Praxis Skill Training Board
2,27 €
The circular circuit in the middle is a running water lamp circuit, which is composed of CD4017, NE555, and light-emitting diodes. It can work after being energized after welding. The design of the PCB board is reasonable, and the commonly used SMD components are used.
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