Date: 16 December, 2013
Location: New Delhi
Team Size: 1
Details: Recently I got around to experimenting with Arduino coding after a gap of a few months. The LED Matrix Shield was built on a general purpose PCB with a little help from a friend with far superior soldering skills than I. To use the minimum number of Arduino Uno pins, two 74HC595N shift registers were used, which reduced the number of pins used from 16 to 6. The code, 74HC595 datasheet, extra circuit & code details, pinout & schematic diagram, and a sample video can be found here.