Today Free Circuit Diagrams 4U is going to give you a useful circuit diagram.This circuit is mainly operated by two ICs.One is NE555 and IC 4017.When you build this circuit use a PCB.If you use blue colour LEDs it would be so attractive.
Note:-
# Don't supple over 9V
# Build this circuit on a PCB
Excellent explanation and discussion about the topic, people learn a lot by these blogs.
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