![]() ![]() You should see a red light going ON as soon as you power on, after few moments the LED will flash and the song will start playing. Just insert the SD card with any number of MP3 songs and power on the module. The working of this mp3 player circuit is very simple. I carried out these connections a breadboard and my hardware looks like this The three terminal boxes to the left are connect to ground through a push button. The rightmost three terminals are pulled up to 3.3V using a 220K pull-up resistor. The speaker is directly connected to the SP+ and SP- pins.įor connecting push button simply follow the schematics above, but you might want to solder some wires to make it breadboard friendly. A 0.1uF capacitor is connected across the Vcc and Ground to filter noise. A On/Off switch is connected to the trigger pin to Turn On or Turn Of the module. We have used a 9V battery and a KIA78R Voltage regulator to regulate the battery’s 9V to 3.3V. The circuit diagram shown above will show how we can connect push button to the MP3 module so that we can control the track and volume. MP3 Player Circuit Diagram and Explanation: The functions of the button are shown below. The speaker pins can be directly connected to any speaker there is no need for any Amplifier circuit since the module itself in houses an Audio Amplifier.Īs shown above there are options to use three buttons on the MP3 module. The Vcc pin can accept either 3.3V or 5V, but they should be regulated voltage. The picture of the module with its pin-outs marked are shown below It also has provision for three buttons which can be used to Play/Pause songs, Change track and Increase/decrease volume. The module has four holes namely Battery Positive, Ground, Speaker positive and Speaker negative. ![]() This module has a SD card slot in which we can insert an SD card with MP3 songs, and when we power the module it will start playing those songs. ![]() The heart of this mp3 player project is the GPD2846 MP3 Player Audio Decoder module. The list above might seem a bit long but they are all very cheap and easily available. ![]() Sounds interesting right, so let us build it. With some extra effort you can build your own pocket MP3 Music player and take it with you on the go. In this tutorial we will learn how to build a simple yet powerful MP3 player that could play any MP3 song, the volume and track can also be adjusted with the help of push buttons. It is always interesting to build things that could be used in our day to day life and it gets more interesting when the same can be built easily at a very low cost. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |