building RGB LED screens is one of the most fascinating programming as well as engineering difficulties we see right here on Hackaday. Not only do the creators of big screens as well as LED cubes have to offer with the power demands of driving a whole lot of LEDs, however there’s likewise the problem of getting the frame rate high sufficient to screen video. It’s a non-trivial task, however [Paul Stoffregen] has an fascinating solution. He composed an LED strip library that can manage eight meter-long LED strips that can likewise be utilized on daisy chained Teensy 3.0 microcontrollers for truly big displays.
[Paul]’s LED library works with LED strips based on the WS2811 LED controller IC. These chips are the most typical controller chips for the individually controllable LED strips you can discover at Adafruit or numerous Chinese resellers. The library needs DMA transfer to screen images, so if you’re seeking to develop a ginormous RGB LED display, you may want to pick up a few of [Paul]’s Teensy 3.0 boards
[Paul] likewise produced a Processing app that takes a video data as well as turns it into serial data for his LED strip library. You can inspect out a video of this app, library, as well as a 60×32 RGB LED screen after the break.