The CPU is an AMD K5 running 75 MHz. Theres 16 meg ram, and the operating system is Linux (Red Hat 5.2). MPG123 handles the MP3 decoding, and I wrote a control program in Perl.
I built the remote control in an old Blaupunkt CD-changer remote case which I emptied completely. It now has a backlit 40x2 LCD and a PIC 16F84 microcontroller. It communicates serially at 2400 baud and also turns the players power supply on and off. It has a few inputs and can sense if the car stereo is on.
This player has survived winter in central Oregon and summer in Phoenix. Before I built the remote Id have to manually turn the power off, and sometimes Id forget. I could still start the car after running 15 hours on the battery, and it a