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Arduino Door Bell With VU Meter

Basic idea is - upon pushing the door bell push button, LEDs will start to rhythmically glow along with buzzer sound, after a time two events will automatically stop. The LEDs can be outside the door for entertaining the visitor or inside. In this instructable, I am demonstrating the basic project keeping it quite simple.
I described the basic of this project as door bell project on my technology blog, shared on Hackstar, Fritzing etc places. Reader unlikely to face trouble building it. On Instructables, I will add more ideas to improve, customize this project for real life usage. VU Meter is somewhat subjective phrase.”

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