My latest project is a scrolling text display.
Parola is a modular scrolling text display using MAX7219/21 LED matrix display controllers. The display is made up of any number of identical modules that are plugged together to create a wider/longer display.
The aim was to create a 'lego-like' approach to LED matrix display, using standard 8x8 LED matrices. The software supports this flexibility through a scalable approach that only requires the definition of the number of modules to adapt existing software to a new configuration.
The library implements functions to simplify the implementation of text special effects on the LED matrix.
* Text left, right or center justification in the display
* Text scrolling, appearance and disappearance effects
* Control display parameters and animation speed
* Support for hardware SPI interface
Hardware and software are available at http://parola.codeplex.com
A video of the system working at http://www.youtube.com/watch?v=JgzVCSFaz3I&feature=youtu.be