Referring to the above circuit diagram, it shows a complete circuit in implementing an electronic stethoscope.
The circuit shows from the connection of the chest piece to the pre-amplifier circuit using the TL072 op-amp, then towards the filtering part, then the main part of the circuit is the power amplifier circuit then lastly towards the output which is the stereo jack to the speaker/graphic LCD.
By having Audioguru as the reference to this project, the project is most possibly can be done successfully. Through out the process, including assembling the circuit, to soldering part, then to the testing part.
Some complications occurred, might be because of the unstable of the components, or the soldering part is way too much disturbance. Nevertheless, the project are still ongoing process to achieve the objectives.
Since the added value towards this project is the LCD graphic that is needed to be assemble as the output of the project, in order to display the phonocardiogram display, some coding needed to be done in this project. Arduino, the microcontroller, is then used to operate this LCD with the coding coded.
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