Not all LEDs are created exactly the same, there may be small variation even in the same batch. Multiple parallel LEDs aren't good for this reason. It's better to multiplex the LED matrix even if all you wanted to do is light up all 64 LEDs.
Not all LEDs are created exactly the same, there may be small variation even in the same batch. Multiple parallel LEDs aren't good for this reason. It's better to multiplex the LED matrix even if all you wanted to do is light up all 64 LEDs.