One problem with acoustic stethoscopes is that the sound level is extremely low. Electronic stethoscopes utilize advanced technology to overcome these low sound levels by electronically amplifying body sounds. Digital stethoscope; These units work by detecting sound through the electronic stethoscope sensor, converting that sound energy to electricity and running it through circuitry which can amplify it, filter it by frequency, and finally convert the data from analog to a digital. In this project, we are interfacing Stethoscope to the Arduino via microphone and amplifier. Arduino will convert the body sound into analog signal and send this signal to the NodeMCU. Node MCU will converts this analog signal into tone and sent through speaker.

The major building blocks of this project are:

• Adapter.
• NodeMCU.
• Arduino UNO.
• Stethoscope.
• Microphone.
• Amplifier.
• Speakers.

Software’s Used:

• Embedded C programming.
• Arduino IDE Studio compiler for dumping code into Microcontroller.
• Express SCH for circuit designing.

   

  Regulated power supply:    

Block Diagram:       video: