Quote:
Originally Posted by Qbranch
Remember to put resistors in series with your leds or you'll easily go over the 2.5mA per line drive current.
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2.5mA is likely not going to cut it. We typically supply 10mA to LEDs in our projects, and that is acceptable but usually not super-bright, and this is for regular status LEDs that are not multiplexed. When you multiplex them, they're only on for a fraction of the time, making them appear even dimmer than usual.