IKEA Frekvens LED panel hacking - preview скачать в хорошем качестве

IKEA Frekvens LED panel hacking - preview

The IKEA FREKVENS LED panel looks neat and is very bright, but the built-in functionality is somewhat limited - just a bunch of static bitmap stacks advancing whenever there's sound present. The 256 LEDs are driven with 16 shift registers each operating 16 pixels. The signal protocol is a basic 3-wire latch-clock-data thing with 3V logic levels and leading edge pulses. The enable line is inverted logic and can be PWM driven for dimming control. You can trivially rip out the controller board and put in a small microprocessor such as a Teensy or a Feather type Arduino compatible and drive the LED shift registers from your own software. I've written a FREKVENS Arduino library compatible with the Adafruit GFX library. I'll upload it to Github over the weekend and do a project writeup, after I finish writing some optimized routines for some of the graphics primitives. Bitmap drawing, line drawing, all the basic stuff works. Happy hacking.