Rgb Led Flashing Christmas Tree Diy Kit Electronics Soldering Colorful 3D Xmas Tree Diy Kit For Soldering Practice 4713464825954

Rgb Led Flashing Christmas Tree Diy Kit Electronics Soldering Colorful 3D Xmas Tree Diy Kit For Soldering Practice 4713464825954

Tlily

Working principle: When connected to a 3-5 V power supply, 37 LEDs are divided into four groups. Whenever the power is turned , the four transistors...

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