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my arduino based LED cube 3X3X3

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My LED cube - 3X3X3.. arduino based. Hello people.. I'm Saksham Prakash from Lucknow, India. Recently I made a really simple LED cube which can display numbers, alphabets, patterns and designs etc.    The Arduino Micreocontroller The Cube 3X3X3 Random LED Program Program : int i; int a; void setup () {                                                                   for (i=4; i<14; i++){     pinMode(i, OUTPUT); } Serial.begin(9600); } void loop(){   digitalWrite (13, HIGH);   digitalWrite (2, HIGH);   digitalWrite (3, HIGH); ...