12 LED Chaser with Arduino Nano

        This project is concerning how to make LED chaser utilizing Arduino Nano with 7 impacts(7 effects). The LEDs lights individually for a time of second and the cycle continues giving the running light appearance.

COMPONENT REQUIREMENTS:

     1. Arduino Nano

       2. Arduino cable

       3. Resistor - 220 Ohm

       4. LED's

       5. Breadboard

       6. Jumper wire

PROCEDURE:

STEP - 1

     Addition the resistor and LED's into the breadboard. Interface LED's negative and positive as given beneath in the image. 

STEP - 2

    Insert the Arduino Nano in the breadboard. 
     

STEP - 3

     Interface the jumper wire with the LED's positive leg and furthermore resistor. 

STEP - 4

     Connect jumper wire in the Arduino board as given.

                1. LED's positive in Arduino Nano pin D2 to D13

                2. Resistor to Arduino Nano GND

STEP - 5

    Upload the source code to the Arduino Nano board.

#define t 30 #define t1 20 #define t2 100 #define t3 50 void setup() { // set up pins 2 to 13 as outputs for (int i = 2; i <= 13; i++) { pinMode(i, OUTPUT); } } /////////////////////////////////////////////////////////////////////////////////Effect 1 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); } } /////////////////////////////////////////////////////////////////////////////////Effect 2 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; i < 13; i++) { clear(); digitalWrite(i, HIGH); // chaser 1 digitalWrite(count, HIGH); // chaser 2 count--; // stop LEDs from appearing to stand still in the middle if (count != 7) { delay(t2); } } // move first LED from right to left and second LED from left to right for (int i = 13; i > 2; i--) { clear(); digitalWrite(i, HIGH); // chaser 1 digitalWrite(count, HIGH); // chaser 2 count++; // stop LEDs from appearing to stand still in the middle if (count != 8) { delay(t2); } } } ////////////////////////////////////////////////////////////////////////////////Effect 3 void effect_3() { for(int i=2; i<14; i++){ digitalWrite(i, HIGH); delay(t3); } for(int i=2; i<14; i++){ digitalWrite(i, LOW); delay(t3); } for(int i = 14; i>=2; i--){ digitalWrite(i, HIGH); delay(t3); } for(int i = 14; i>=2; i--){ digitalWrite(i, LOW); delay(t3); } } ///////////////////////////////////////////////////////////////////////////Effect 4 void effect_4() { for(int j = 2; j <= 13; j++){ digitalWrite(j, HIGH); delay(t2); j=j+1; } for(int j = 2; j <= 13; j++){ digitalWrite(j, LOW); delay(t2); } for(int k = 15; k > 2; k--){ digitalWrite(k, HIGH); delay(t2); k=k-1; } for(int k = 15; k > 2; k--){ digitalWrite(k, LOW); delay(t2); } } //////////////////////////////////////////////////////////////////////////////Effect 5 void effect_5() { for(int pin = 13; pin >= 2; pin--) { digitalWrite(pin, HIGH); delay(t1); digitalWrite(pin+1, LOW); delay(t1); } for(int pin = 13; pin >= 2; pin--) { digitalWrite(pin+1, HIGH); delay(t1); digitalWrite(pin+2, LOW); delay(t1); } for(int pin = 13; pin >= 2; pin--) { digitalWrite(pin+2, HIGH); delay(t1); digitalWrite(pin+3, LOW); delay(t1); } for(int pin = 13; pin >= 2; pin--) { digitalWrite(pin+3, HIGH); delay(t1); digitalWrite(pin+4, LOW); delay(t1); } for(int pin = 13; pin >= 2; pin--) { digitalWrite(pin+4, HIGH); delay(t1); digitalWrite(pin+5, LOW); delay(t1); } for(int pin = 13; pin >= 2; pin--) { digitalWrite(pin+5, HIGH); delay(t1); digitalWrite(pin+6, LOW); delay(t1); } for(int pin = 13; pin >= 2; pin--) { digitalWrite(pin+6, HIGH); delay(t1); digitalWrite(pin+7, LOW); delay(t1); } for(int pin = 13; pin >= 2; pin--) { digitalWrite(pin+7, HIGH); delay(t1); digitalWrite(pin+8, LOW); delay(t1); } for(int pin = 9; pin >= 2; pin--) { digitalWrite(pin+8, HIGH); delay(t1); digitalWrite(pin+9, LOW); delay(t1); } for(int pin = 9; pin >= 2; pin--) { digitalWrite(pin+9, HIGH); delay(t1); digitalWrite(pin+10, LOW); delay(t1); } for(int pin = 9; pin >= 2; pin--) { digitalWrite(pin+10, HIGH); delay(t1); digitalWrite(pin+11, LOW); delay(t1); } for(int pin = 14; pin >= 2; pin--) { digitalWrite(pin+11, HIGH); delay(t1); } for(int pin = 13; pin >= 2; pin--) { digitalWrite(pin, LOW); delay(t1); } } /////////////////////////////////////////////////////////////////////////////Effect 6 void effect_6() { for(int j=2; j<14; j++){ digitalWrite(j, LOW); delay(t); digitalWrite(j, HIGH); delay(t); digitalWrite(j-2, LOW); delay(t); digitalWrite(j, HIGH); } for(int k = 15; k>2; k--){ digitalWrite(k, LOW); delay(t); digitalWrite(k, HIGH); delay(t); digitalWrite(k+2, LOW); delay(t); digitalWrite(k, HIGH); } for(int k = 2; k<14; k++){ digitalWrite(k, LOW); delay(t); digitalWrite(k, HIGH); delay(t); digitalWrite(k-2, LOW); delay(t); digitalWrite(k, HIGH); } for(int k = 15; k>2; k--){ digitalWrite(k, LOW); delay(t); digitalWrite(k, HIGH); delay(t); digitalWrite(k+4, LOW); delay(t); digitalWrite(k, HIGH); } for(int k = 2; k<14; k++){ digitalWrite(k, LOW); delay(t); digitalWrite(k, HIGH); delay(t); digitalWrite(k-4, LOW); delay(t); digitalWrite(k, HIGH); } } ///////////////////////////////////////////////////////////////////////////////////Effect 7 void effect_7() { for(int j=2; j<14; j++){ digitalWrite(j, HIGH); delay(t); digitalWrite(j+2, LOW); delay(t); } for(int k = 15; k>2; k--){ digitalWrite(k, HIGH); delay(t); digitalWrite(k+2, LOW); delay(t); } } // function to switch all LEDs off void clear(void) { for (int i = 2; i <= 13; i++) { digitalWrite(i, LOW); } }

STEP - 6

    

    Run the project to get the 7 effects of LED's.