Huge Interactive Game of Tetris

Overview

This interactive Tetris game is similar to a kiosk touch screen which can be controlled by touching buttons directly on frame.

Details

240 buttons make up this Tetris game which comprise of 720 LEDs as it was built around the ATmega8 microcontroller that runs at 16MHz with two shift registers and a ULN2003 sink driver. The Tetris board is made of 10x20 cells and there are 1 to 7 different block colors which are lighten up by each cell. Also, 15 separate 4x4 button pads make up the total array of 12x20 buttons. In order to possibly light any button with any color, an RGB LED is placed behind each button.

To update all picture and read all button state, the processing power should be enough and with the entire board running fully illuminated, a 1.5A current is drawn by the system. A computer power supply was use which can provide 12V at 2A but opted to use the 5V rail instead. This 460W PSU can give 30A at 5V which is a lot of power.

For the SPI interface, the board contains a 6-pin connector for CS, SCK, MOSI, MISO, GND, & 5V.