| Components | Description |
| Arduino | A microchip also known as microcontroller. As we need the data of inputs and outputs, in this paper it is used by Arduino to control the system. |
| Sound Transducer | A sound transducer converts sound energy into electrical energy. In this paper, it is used to convert sound energy into electrical energy. |
| Step-up Transformer | As we increase the input voltage, the secondary coil has more turns than the primary coil. In this paper, it is used to maximize the obtained voltage. |
| Diode | Diode only conducts when forward biased. We know the diode conducts in half cycles and insulates during other cycles. This property is used for rectification of AC into DC. In this paper, a diode is used for storing voltage into a battery. |
| Battery | A 9V power supply is utilized to help store the generated voltage and to power the LED via the microcontroller. |
| LDR | A light dependent resistor is called LDR. In this paper, it will work as a sensor at night and to run the Arduino to supply output. |
| LED | It is used to show stored voltage and other readings. |
| Wires | Flexible wire having connections on both ends enables the wires to be joined to other pins. |