Scanning at 80 frames per second he gets a nice, flickerless display. To make both the LED matrix circuit board and the control board, [Joekutz] carved out isolation paths in copper clad boards ...

Each side of the board contains 4,480 LEDs driven as two parallel chains. [asjackson] dove into its guts, decoding circuits, fixing misaligned logic levels, and designing custom circuit boards in ...

LED displays, message, are typically commercial or industrial signs. They allow for larger characters and longer viewing distances than digital LED displays. Light-emitting diode (LED) displays are ...