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LED Pattern-Flasher, Astable 555 Timer, 4017 Counter and 2N2222A Transistors With Variable Resistance 0-500KΩ at 100%

555 Timer With Flashing LED and Instructions

LED Pattern-Flasher, Astable 555 Timer, 4017 Counter and 2N2222A Transistors With Variable Resistance 0-500K at 100%

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