Homemade piano

 

How to make a piano at home 

Some your ideas 

You can create every tone from keypad 

This piano making for some components 

No 1- lm386 

No 2 -Mobile Speaker 

No 3 -104 Ceramic Capacitor 

No 4 -470uf 16 v polarize Capacitor 

No 5 -Aux cable mono type

No 6 -3.7 v battery 

This is the circuit diagram 

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LM386 IC is a popular low voltage power amplifier used mostly in consumer applications including: AM-FM Radio Amplifiers, line drivers, small servo drivers, power converters, TV sound systems and more. The LM386 IC operates from 4V to 15V, has a good adjustable gain value from 20 to 200 with the use of external resistors and capacitors. It can well drive loads from 4W to 32W . This IC is easy to use and integrate in your audio amplifier circuits.

Features of LM386 Low Voltage Audio Op-Amp IC

Wide Supply Voltage Range: 4 V–12 V

Voltage Gains from 20 to 200

Low Quiescent Current Drain: 4 mA

Low Distortion: 0.2%

Low noise circuitry

External circuitry only consists of small components

Quiescent power is only 24mW on a 6V supply

Easy to use