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In this tutorial, I’ll show you how you can make DIY Piano by connecting IC555 timer in ASTABLE multivibrator Mode with variable frequency to a speaker. The piano is a wonderful musical instrument and one can make a cheap one using IC555 timer. This concept of the piano is achieved by making the timer generate 5-15 different kind of sounds. The different sounds are generated through timer by allowing it to run as a free-running mode or astable mode or square wave mode, with variable frequency output option.
So without any further ado Lets built it!”

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