ATmega8 Based WiFi Radio

This project uses an ATmega8 microcontroller in order to create a WiFi Internet Radio that can be tuned in online stations as it removes the limits of location.

The hardware components of the project includes the vacuum fluorescent display, USB audio adapter, processor board, various knobs/buttons, and Asus WL-520gu router. The board holds the microprocessor, a MAXIM MAX233 serial level converter, a pull-up resistor for the reset line, the headers for the connecting cables, and a few capacitors. The use of MAX233 is to purely limit potential problems with the Atmel for not being able to drive the serial line of the display properly since the display accepts RS232C voltages and the 12V levels.

For the USB audio adapter, there are several types that will work in this project. The display filter uses an acrylic that is placed in front of fluorescent displays since the character cells are in the VFD. In mounting the board, only one bracket bolts directly to the display and anchors at the bottom of the box to keep from sliding around. The output of the microprocessor to drive the input of the relay is buffered by ULN2003 Darlington array.

Rest of the project