CREATE AN LED SIGN CONTROLLER: A TUTORIAL

摘要

I bought a used LED sign from a local electronics store and took it apart.It contained two rows of 14 large 5x7 LED modules.The display lit up with messages from an old arcade game,but I couldn't figure out how to get it to display new information.With the help of a logic analyzer,I determined how the controller worked and decided to keep the display board,then scrap the controller and create my own.