Thursday, February 17, 2011

The LEDs are a little dimmer than they can safely be operated.  A quick Google later I find this from the Arduino  site:
Note that the pullup resistors provide enough current to dimly light an LED connected to a pin that has been configured as an input. If LED's in a project seem to be working, but very dimly, this is likely what is going on, and the programmer has forgotten to use pinMode() to set the pins to outputs.
So I will take a look at the code again tonight and see if I missed something obvious.

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