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Product Details
✓PCB blank board Size: 80mm x 60mm
✓The circular circuit is the running water lamp circuit, which is composed of CD4017, NE555 and leds, which can be used to work after being welded.
✓Add 2pcs of QFP44 chip, double sided component layout, double welding.
✓High quality PCB, has clearly marked the electronics components, even beginners can easily solder successfully.
✓Please make sure all components in right direction and right place; and check whether pseudo and float welding, this is very important in practicing and testing.