Simple Circuits

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  Materials Required:- 1.  Arduino UNO 2.  9V Battery 3.  220 Ohm Resistors 4.  Breadboard 5.  Male to Male Jumper Wires 6.  Red LED's

int LED1 = 2; int LED2 = 3; int LED3 = 4; int LED4 = 5; int LED5 = 6; int LED6 = 7; int LED7 = 8; int LED8 = 9; int LED9 = 10; int LED10 = 11; int LED11 = 12; int LED12 = 13; int t=30; void setup() {    pinMode(LED1, OUTPUT);    pinMode(LED2, OUTPUT);    pinMode(LED3, OUTPUT);    pinMode(LED4, OUTPUT);    pinMode(LED5, OUTPUT);    pinMode(LED6, OUTPUT);    pinMode(LED7, OUTPUT);    pinMode(LED8, OUTPUT);    pinMode(LED9, OUTPUT);    pinMode(LED10, OUTPUT);    pinMode(LED11, OUTPUT);    pinMode(LED12, OUTPUT);      } void loop(){ digitalWrite(LED12, HIGH);       delay(t);                    digitalWrite(LED11, HIGH);       delay(t);                     digitalWrite(LED10, HIGH);    delay(t);                    digitalWrite(LED9, HIGH);     delay(t);                     digitalWrite(LED8, HIGH);       delay(t);                    digitalWrite(LED7, HIGH);       delay(t);                    digitalWrite(LED6, HIGH);     delay(t);                  digitalWrite(LED5, HIGH);    delay(t);    

 int LED1 = 2; int LED2 = 3; int LED3 = 4; int LED4 = 5; int LED5 = 6; int LED6 = 7; int LED7 = 8; int LED8 = 9; int LED9 = 10; int LED10 = 11; int LED11 = 12; int LED12 = 13; int t=20; int y=100; void setup() {    pinMode(LED1, OUTPUT);    pinMode(LED2, OUTPUT);   pinMode(LED3, OUTPUT);     pinMode(LED4, OUTPUT);    pinMode(LED5, OUTPUT);    pinMode(LED6, OUTPUT);    pinMode(LED7, OUTPUT);    pinMode(LED8, OUTPUT);    pinMode(LED9, OUTPUT);    pinMode(LED10, OUTPUT);    pinMode(LED11, OUTPUT);    pinMode(LED12, OUTPUT);      } void loop() {                        digitalWrite(LED12, HIGH);       delay(t);                    digitalWrite(LED11, HIGH);       delay(t);                     digitalWrite(LED10, HIGH);    delay(t);                    digitalWrite(LED9, HIGH);     delay(t);                     digitalWrite(LED8, HIGH);       delay(t);                    digitalWrite(LED7, HIGH);       delay(t);                    digitalWrite(LED6, HIGH);     delay(t);                  digita

  #define t   30 #define t1  20 #define t2  100 #define t3  50 void setup() {   // set up pins 2 to 13 as outputscf   for (int i = 2; i <= 13; i++) {     pinMode(i, OUTPUT);   } } void loop(){ effect_1(); effect_1();  effect_2();  effect_2();  effect_3();  effect_3();  effect_4();  effect_4();  effect_5();  effect_5();  effect_6();  effect_6();  effect_7();  effect_7();   } //left to right and right to left void effect_1() { for(int i=2; i<14; i++){ digitalWrite(i, HIGH); delay(t1); digitalWrite(i+1, HIGH); delay(t1); digitalWrite(i+2, HIGH); delay(t1); digitalWrite(i, LOW); delay(t1); digitalWrite(i+1, LOW); delay(t1); } for(int i=13; i>1; i--){ digitalWrite(i, HIGH); delay(t1); digitalWrite(i-1, HIGH); delay(t1); digitalWrite(i-2, HIGH); delay(t1); digitalWrite(i, LOW); delay(t1); digitalWrite(i-1, LOW); delay(t1); } } void effect_2() { int count = 13; // keeps track of second LED movement   // move first LED from left to right and second from right to left   for (int i = 2;