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 ...

For discussion, let us use the simple example of a single cell lithium-ion battery (4.2V to 3.0V) used to power four white LEDs (LED forward voltage, VF, is typically 3.6V to 2.5V, depending on ...