Ultimate MP3 radio
Perusing through the impressive list of past projects, we decided to make our final project a combination of two technologies—wireless technology and the MP3 player. Specifically, we decided to create an MP3 player that broadcasted the songs to an FM dial. We call this the "MP3 Radio."
To accomplish this, we used an ATMEL ATmega32 MCU, a STA013 MP3 decoder, and an IF VCO MAX2606 FM transmitter as our main hardware components. On our software side, we used C and PHP-GTK as our programming languages; and CodeVision C Compiler and Visual Studio C++ as our compilers.
The user interface consists of two components: one on the PC side, and one on the external hardware piece. On the PC, using PHP-GTK, we created a GUI application, which allowed the user to create the playlist and then start the "broadcast." Externally, on the STK-500, the user can control the MP3 player with the following pushbuttons:
button 1: (un)pause song;
button 2: stop song;
button 3: play song;
button 4: go to next track;
button 5: go to previous track;
button 6: toggle mode (between normal, rock, jazz, & classical);
button 7: increase volume; and
button 8: decrease volume.
Using our "MP3 radio," users are no longer confined by the limits of traditional speakers. In fact, speakers are no longer needed, as long as there's a radio nearby. One very practicable application is to adapt this as an add-on to a PDA. Thus, you can transform your walkman and your car radio into MP3 players. Moreover, it was a great way for us to explore two distinct technologies we are interested in.
Link: http://instruct1.cit.cornell.edu/courses/e...eport/index.htm
Perusing through the impressive list of past projects, we decided to make our final project a combination of two technologies—wireless technology and the MP3 player. Specifically, we decided to create an MP3 player that broadcasted the songs to an FM dial. We call this the "MP3 Radio."
To accomplish this, we used an ATMEL ATmega32 MCU, a STA013 MP3 decoder, and an IF VCO MAX2606 FM transmitter as our main hardware components. On our software side, we used C and PHP-GTK as our programming languages; and CodeVision C Compiler and Visual Studio C++ as our compilers.
The user interface consists of two components: one on the PC side, and one on the external hardware piece. On the PC, using PHP-GTK, we created a GUI application, which allowed the user to create the playlist and then start the "broadcast." Externally, on the STK-500, the user can control the MP3 player with the following pushbuttons:
button 1: (un)pause song;
button 2: stop song;
button 3: play song;
button 4: go to next track;
button 5: go to previous track;
button 6: toggle mode (between normal, rock, jazz, & classical);
button 7: increase volume; and
button 8: decrease volume.
Using our "MP3 radio," users are no longer confined by the limits of traditional speakers. In fact, speakers are no longer needed, as long as there's a radio nearby. One very practicable application is to adapt this as an add-on to a PDA. Thus, you can transform your walkman and your car radio into MP3 players. Moreover, it was a great way for us to explore two distinct technologies we are interested in.
Link: http://instruct1.cit.cornell.edu/courses/e...eport/index.htm