Simple Electronic PianoElectronic Piano Circuit uses 555 Timer

Electronic Piano




Circuit Components

+9 to +12 supply voltage

555 timer IC

100Ω, 10KΩ (5pieces) and 2K2Ω resistors

100KΩ pot or variable resistor

0.1µF and 10µF capacitors, 100µF capacitor (not a compulsory, connected in parallel to power)

Buttons (6 pieces)

Speaker (8Ω,0.5WATT).

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