Gikfun DIY SMD SMT Welding Practice Soldering Skill Training Board NE555 CD4017 Water Flowing Led Diy Kit EK1885
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<b>[Product Information]</b><br>
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<li>PCB blank board Size: 80mm x 60mm</li>
<li>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.</li>
<li>Add 2pcs of QFP44 chip, double sided component layout, double welding.</li>
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