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Paulp Paul

Very impressive website. Very good products you have. Easy to implement. Easy for application circuits. Very good blog so that users could easily do the circuit. Beautiful pictures and drawings. Good work.

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Latest Blog

Arduino MP3 player using VS1003, SD card module and Arduino UNO

Arduino MP3 player using VS1003, SD card module and Arduino UNO

Circuit is done as shown in the diagram. Volume can be controlled using 10K POT.

Program

VS1003-masterDownload

Copy and paste the program to your Arduino libraries folder. Compile and upload the example code to your Arduino board. A file named “2.mp3” will be played in my code. A file named “2.mp3” should be there in your SD card. Otherwise, it will give an error.

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Communication between ESP-12F IOT module and SD card module using Arduino

Communication between ESP-12F IOT module and SD card module using Arduino

References :

Refer http://www.haberocean.com/2019/05/esp-12f-iot-module-programmer-circuit/ to get the programming basics.

Upload the following program to ESP-12F IOT module.

/*
Listfiles

This example shows how print out the files in a
directory on a SD card

The circuit:
SD card attached to SPI bus as follows:
** MOSI – pin 11
** MISO – pin 12
** CLK – pin 13
** CS – pin 4

created Nov 2010
by David A.

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Working of low noise electret MIC pre-amplifier module

Working of low noise electret  MIC pre-amplifier module

Connect the output to a Digital Storage Oscilloscope to see the variations in output with the sound signals on electret MIC.

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