[sigplus] Critical error: Image gallery folder GoLDisplay is expected to be a path relative to the image base folder specified in the back-end.

Game of Life LED Display mounted

This display was designed and built as part of the "Passive Agressive" art show.

The display uses 100 blue LEDs to display various patterens. Many large scale LED displays are multiplexed, to save power and output pins. The drawbacks are reduced light output, and the need to rely on using Persistance of Vision to simulate a frame on the board. I ended up deciding to make each 'pixel' on my display individuallty adressable. I was able to do this because the number of outputs I needed (100) was reasonable to wire, and I didn't need to acheive a very high refresh rate.

The display is driven by an Atmega 328 running the Arduino Bootloader and programmed via the Arduino IDE. The arduino sends data to the 13 shift registers, and each register sends the correct signal to the correspsonding LED. A small subprogram I wrote in the Arduini IDE will take any 10x10 binary matrix, and 'draw' that matrix on the display.

The Arduino also handles communication to the Magnetic Card Reader. The arduino waits for someone to scan a card to initialize the program. Once scanned, the Arduino uses some of the data on the card to seed an initial matrix for the display. Once initialized, Conway's Game of Life is played on the display. Everytime a card is swiped, the same 'game' will be played.

Most cards will create a game that will leave the board dead at the end of the game. However some will leave patterns that will persist until an ew card is swiped.


Gallery


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{gallery}GoLDisplay{/gallery}


Video


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  • Arduino Code
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[sigplus] Critical error: Image gallery folder GoLDisplay is expected to be a path relative to the image base folder specified in the back-end.