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Topic: newbie question (Read 762 times) previous topic - next topic


Hi, just new to arduino...
when I plug to usb port pwr led lights up then a yellow led labeled (L) blinks : is this the normal behaviour ?

I tried the leb blink example connecting a led to pin 12 with a 220homs resistor then to ground, modified the led blink example but nothing happens but if I plug the led into port 13 it blinks even though the loaded program specifies pin 12

any enlightnement welcome....

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