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Wednesday, 30 November 2016

MICROCONTROLLER BASED MP3 PLAYER

MP3 is a computerized sound encoding group utilizing a type of pressure. It is a typical sound arrangement for shopper sound stockpiling, and in addition an accepted standard encoding for the exchange and playback of music on advanced sound players. In this venture we are utilizing an Atmel micro controller, a LCD show, some push buttons, an mp3 decoder, and an advanced to simple converter.


We are additionally utilizing a SD (Secure Digital) card to store the MP3 documents. MP3 documents can be stacked into the SD card utilizing the PC. The card is designed by the FAT document framework that Microsoft Windows employments. The micro controller is then used to peruse this SD card to get the mp3 information. Melody titles are shown on the LCD screen. Push buttons on the STK500 are utilized for capacities, for example, skip to the following melody, stop, and play.


A smaller than normal RCA jack (3.5mm sound jack) is utilized as the yield of the mp3 player, which can be associated with an auto tape connector or a remote FM transmitter. A 12V DC fitting is the power source with the goal that it can be connected to the versatile charging port of an auto for power. The volume can be controlled by the auto's sound framework. As the plan just needs a 12V DC control source, no batteries are required. The mp3 player will never skip on uneven surfaces as its simply perusing streak memory furthermore, there's no plate drive or CD turning that is being perused. Since the SD card is removable, the capacity size can increment as new, bigger SD cards are made, instead of being a settled size like most mp3 players today. Applications: I pod's., CD players, VCDS, Cell telephones

Programming:
AVR studio programming
Embedded c programming
STK500 Programmer

Hard product:
AVR controller
MMC/SD
Speaker
LCD show
Push buttons

Sound codec

Control supply: This venture utilizes controlled 5v, 500mA power supply. 7805, a three terminal voltage controller is utilized for voltage direction. Connect sort full wave rectifier is utilized to correct the air conditioner yield of auxiliary of 230/12v stage down transformer.


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