bkolin wrote:Should either of the two leds (red or green) be blinking when the built in (pin 13) led is blinking down below on the main Arduino board? According to the traces and a little poking with my meter, I think I see the leds on the shield just end in holes to be used in the future, just looking for confirmation. Also, since I am posting I'll tack on a second question - what makes the caps on the shield optional (to be left off if using a medium size breadboard)? This is what scares me about the digital electronics world, if they are optional but good, how would one have known to design them in there in the first place? Many thanks.
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