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Topic: Tutoria shif out error (Read 635 times) previous topic - next topic

lesto

Hi,
in the
http://www.arduino.cc/en/Tutorial/ShiftOut
we can see the shifout chip using the 5V from arduino to light up to 8 led in first example and 16 led in the seconds.

But arduino 5V pin can give at maximum 200mA, and many USB will give at max 100m.

Also the tutorial does never alert the user about power consumption and arduino's regulator limit
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