Password protected Secret Telling Arduino!

I was fooling around with my Arduino UNO and started making some cool things. One of them was a password protected secret telling Arduino! You don't need anything but a computer and an Arduino! Programming This is the code I used! void setup() { pinMode(13, OUTPUT);   Serial.begin(9600); ...
By: simonfrfr

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Source: http://www.instructables.com/id/Password-protected-Secret-Telling-Arduino/

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