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Arduino Forum pins 12 , 13

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pins 12 , 13

Former Member over 10 years ago

are pins 12, 13 the only pins that can drive "hi" an led.... very new to this and trying to get all pins hi to drive leds, like a parallax

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jw0752 over 10 years ago

Hi John, As long as you set the pin as an OUTPUT you can digitalWrite any pin 0 to 13 HIGH or LOW.
John
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jw0752 over 10 years ago

Hi John, As long as you set the pin as an OUTPUT you can digitalWrite any pin 0 to 13 HIGH or LOW.
John
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mcb1 over 10 years ago in reply to jw0752

John and John

You are correct, however I generally caution people against using pins 0 and 1 since they are the Atmega328 Rx and Tx, and can cause issues.

You can also use the Analogue inputs as normal I/O so A0, 1, 2, 3, 4, 5 = Pin 14, 15, 16, 17, 18, 19 and can be set as an input or output.

Mark
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Robert Peter Oakes over 10 years ago in reply to mcb1

And many of the pins can also be used as PWM output in hardware, look for the "~" on some of the pins on an official Arduino to see which pins, or look at the arduino site for the pin definitions
Peter
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