LED Game Platform Using AVR

Overview

The project is an AVR LED game platform consisting of 8x8 dot LED matrix and is built around an ATmega32 microcontroller.

Details

The bi-color (red-green) LED matrix are being driven by the AVR ATmega32 microcontroller through the shift registers as well as generating sound and reading buttons. There is more fun to learn and program the game although it is hard to say how much fun is to play. In the design, a ribbon cable was used in place of a bunch of wires to make handling of things a lot easier. In order to write little programs which can be controlled by user input, the buttons were wired up. The setup makes the dot move around and change its color.

In the current design, some changes have been made wherein instead of using shift register, the ROW inputs are directly driven by transistors. The transistors will allow a decent amount of current through and no need for a shift register since there is enough I/O pins. The resistors are limiting the current coming out of the COLUMNS. ON columns, shift registers with a latch can be used which turns the LEDs really OFF.