OVERHAULING LED MARQUEES

In a previous job, [sprite_tm] was accountable for wrangling many different LED text ad marquees. The hardware was relatively simple as well as he always figured they might be pushed much further with a bit work. He just recently obtained ten 32×16 LED screens a decided to see what he might do with them. By the end of the project, he had full movement video running on the display. This is a excellent job to checked out up on if you’ve ever wondered about LED matrix displays. He starts by reverse engineering the electronics on the board. He then connected an ATmega88 to drive the screen module. several screen modules were daisy chained together over serial. The article covers PWM manage as well as refresh timing as well. inspect out one of a few demo videos below.