MMC card based WAV player
This projects gives you a simple wav player with help of the MMC card connected to ATmega32. You can use any AVR microcontroller.
The MMC card works on 3.3v so a 3.3v regulator is used and the 5v to 3.3v level conversion is done by the combination of resistors. The LF33CV is used for the 3.3v regualtor.
The code is written for 1GB card and if you want to change then you need to change the line number 98 in the program. Now the line is "Test = 512 * 7800" you need to change this 7800 for other value of MMC card.
An 11.05Mhz crystal is used so you have to select the external high frequency crystal at the fuse bits.
The LM386 forms an audio amplifier which amplifies the audio signal. There are 3 buttons on the circuit and they are S1 for start/stop, S2 for Forward and S3 for reverse.
Circuit Diagram
12.12.2009 at 1:13 AM
vey cool project
12.24.2009 at 11:43 PM
Hi..i was build this project but not work :(. i use ATMega 8535, can u help me to solvr this problem?
12.24.2009 at 11:47 PM
hi..Please help me, i build this project with ATMega 8535 but not work,can u explain me why my project not work ?Thanks b4
1.04.2010 at 8:37 AM
Please use the forum at www.8051projects.info/.../forum
7.02.2010 at 6:20 PM
dear friend
if you have the file in codevision please mail it to me?
thanks a lot
7.04.2010 at 1:47 PM
Dear its not working! Please help
7.26.2010 at 11:25 AM
.hex file is enough to dump program what is the need of other files .cfg .rpt..etc