ES-02        16-LEDs Running Lights Kit   (DC 9V)

 

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This is a pet project for many school students. The kit creates a visual effect of two lighted "balls"  chasing in the clockwise direction.  A trimmer pot. is provided for adjustment of running speed.  In this kit, you learn the operation of transistor astable flip-flop & the CMOS 4017 decade counter IC ( with 1-of-10 outputs)