Diwali Lights

1/*
2 * Author: ***** *** <rohroexperiment@gmail.com>
3 * File: diwali_lights.ino
4  * Description: Diwali lights
5*/
6/*
7 * Pin connections:
8   * 74HC595
9      * Pins 1-7 -> LED(of your choice)
10      * Pin 8 -> GND
11      * Pin 9  -> N/C
12      * Pin 10 -> VCC
13      * Pin 11 -> Arduino pin 3
14      * Pin  12 -> Arduino pin 4
15      * Pin 13 -> GND
16      * Pin 14 -> Arduino pin 5
17      * Pin 15 -> LED(of your choice)
18      * Pin 16 -> VCC
19   * Other:
20    * Push button
21      * One side to arduino pin 2 
22      * Other side to  GND
23*/
24#define MAXANIMATIONS 6
25int data = 5;
26int clock = 3;
27int latch  = 4;
28int brightness = 200;
29int animation = 1;
30//Used for single LED manipulation
31int  ledState = 0;
32const int ON = HIGH;
33const int OFF = LOW;
34byte pattern[]  =
35{
36  B00000001,
37  B00000010,
38  B00000100,
39  B00001000,
40  B00010000,
41  B00100000,
42  B01000000,
43  B10000000,
44  B01000000,
45  B00100000,
46  B00010000,
47  B00001000,
48  B00000100,
49  B00000010
50};
51byte pattern2[]  { 129, 66, 36, 24, 36, 66};
52byte pattern3[] {B10000000, B00100000, B00001000,  B00000010, B00000001, B00000100, B00010000, B01000000};
53void setup()
54{
55  pinMode(2, INPUT_PULLUP);
56  attachInterrupt(0, nextAnimation, FALLING);
57  pinMode(data, OUTPUT);
58  pinMode(clock, OUTPUT);
59  pinMode(latch, OUTPUT);
60  Serial.begin(9600);
61
62}
63void nextAnimation () {
64  if (digitalRead(2)  == LOW) {
65    delayMicroseconds(10000);
66    if (digitalRead(2) == LOW) {
67      if (animation == MAXANIMATIONS) animation = 1;
68      else animation++;
69    }
70    while (digitalRead(2) == LOW);
71  }
72}
73/*
74   loop() - this  function will start after setup finishes and then repeat
75   we set which LEDs  we want on then call a routine which sends the states to the 74HC595
76*/
77void  loop()                     // run over and over again
78{
79
80
81
82  if (animation  == 1) animation1();
83  else if (animation == 2) animation2();
84  else if (animation  == 3) animation3();
85  else if (animation == 4) animation4();
86  else if (animation  == 5) animation5();
87  else if (animation == 6) animation6();
88}
89void animation1  () {
90
91  updateLEDs(0x55);
92  delay(1000);
93  updateLEDs(B10101010);
94  delay(1000);
95
96}
97void animation2 () {
98
99  for (int i = 0; i < sizeof(pattern);  i++) {
100    updateLEDs(pattern[i]);
101    delay(250);
102
103  }
104}
105void  animation3() {
106
107  randomSeed(analogRead(A1));
108  updateLEDs(random(255));
109  delay(1000);
110
111}
112void animation4() {
113  updateLEDs(0xff);
114  delay(100);
115  updateLEDs(0);
116  delay(100);
117}
118void animation5() {
119  for (int i =  0; i < sizeof(pattern2); i++) {
120    updateLEDs(pattern2[i]);
121    delay(250);
122  }
123}
124void animation6() {
125  for (int i = 0; i < sizeof(pattern3); i++)  {
126    updateLEDs(pattern3[i]);
127    delay(250);
128  }
129}
130/*
131   updateLEDs()  - sends the LED states set in ledStates to the 74HC595
132   sequence
133*/
134void  updateLEDs(int value) {
135  //digitalWrite(latch, LOW);     //Pulls the chips latch  low
136  //shiftOut(data, clock, LSBFIRST, value); //Shifts out the 8 bits to the  shift register
137  //digitalWrite(latch, HIGH);   //Pulls the latch high displaying  the data
138  digitalWrite(latch, LOW);    //Pulls the chips latch low
139  for  (int i = 0; i < 8; i++) { //Will repeat 8 times (once for each bit)
140    int bit  = value & B10000000; //We use a "bitmask" to select only the eighth
141    //bit  in our number (the one we are addressing this time through
142    value = value  << 1;          //we move our number up one bit value so next time bit 7 will be
143    //bit 8 and we will do our math on it
144    if (bit == 128) {
145      digitalWrite(data,  HIGH); //if bit 8 is set then set our data pin high
146    }
147    else {
148      digitalWrite(data,  LOW);
149    }
150    //if bit 8 is unset then set the data pin low
151    digitalWrite(clock,  HIGH);                //the next three lines pulse the clock pin
152    delay(1);
153    digitalWrite(clock, LOW);
154  }
155  digitalWrite(latch, HIGH);
156}
157
158
159
160

1/*
2 * Author: ***** *** <rohroexperiment@gmail.com>
3 * File: diwali_lights.ino
4
5  * Description: Diwali lights
6*/
7/*
8 * Pin connections:
9   * 74HC595
10
11      * Pins 1-7 -> LED(of your choice)
12      * Pin 8 -> GND
13      * Pin 9
14  -> N/C
15      * Pin 10 -> VCC
16      * Pin 11 -> Arduino pin 3
17      * Pin
18  12 -> Arduino pin 4
19      * Pin 13 -> GND
20      * Pin 14 -> Arduino pin 5
21
22      * Pin 15 -> LED(of your choice)
23      * Pin 16 -> VCC
24   * Other:
25
26    * Push button
27      * One side to arduino pin 2 
28      * Other side to
29  GND
30*/
31#define MAXANIMATIONS 6
32int data = 5;
33int clock = 3;
34int latch
35  = 4;
36int brightness = 200;
37int animation = 1;
38//Used for single LED manipulation
39int
40  ledState = 0;
41const int ON = HIGH;
42const int OFF = LOW;
43byte pattern[]
44  =
45{
46  B00000001,
47  B00000010,
48  B00000100,
49  B00001000,
50  B00010000,
51
52  B00100000,
53  B01000000,
54  B10000000,
55  B01000000,
56  B00100000,
57
58  B00010000,
59  B00001000,
60  B00000100,
61  B00000010
62};
63byte pattern2[]
64  { 129, 66, 36, 24, 36, 66};
65byte pattern3[] {B10000000, B00100000, B00001000,
66  B00000010, B00000001, B00000100, B00010000, B01000000};
67void setup()
68{
69
70  pinMode(2, INPUT_PULLUP);
71  attachInterrupt(0, nextAnimation, FALLING);
72
73  pinMode(data, OUTPUT);
74  pinMode(clock, OUTPUT);
75  pinMode(latch, OUTPUT);
76
77  Serial.begin(9600);
78
79}
80void nextAnimation () {
81  if (digitalRead(2)
82  == LOW) {
83    delayMicroseconds(10000);
84    if (digitalRead(2) == LOW) {
85
86      if (animation == MAXANIMATIONS) animation = 1;
87      else animation++;
88
89    }
90    while (digitalRead(2) == LOW);
91  }
92}
93/*
94   loop() - this
95  function will start after setup finishes and then repeat
96   we set which LEDs
97  we want on then call a routine which sends the states to the 74HC595
98*/
99void
100  loop()                     // run over and over again
101{
102
103
104
105  if (animation
106  == 1) animation1();
107  else if (animation == 2) animation2();
108  else if (animation
109  == 3) animation3();
110  else if (animation == 4) animation4();
111  else if (animation
112  == 5) animation5();
113  else if (animation == 6) animation6();
114}
115void animation1
116  () {
117
118  updateLEDs(0x55);
119  delay(1000);
120  updateLEDs(B10101010);
121
122  delay(1000);
123
124}
125void animation2 () {
126
127  for (int i = 0; i < sizeof(pattern);
128  i++) {
129    updateLEDs(pattern[i]);
130    delay(250);
131
132  }
133}
134void
135  animation3() {
136
137  randomSeed(analogRead(A1));
138  updateLEDs(random(255));
139
140  delay(1000);
141
142}
143void animation4() {
144  updateLEDs(0xff);
145  delay(100);
146
147  updateLEDs(0);
148  delay(100);
149}
150void animation5() {
151  for (int i =
152  0; i < sizeof(pattern2); i++) {
153    updateLEDs(pattern2[i]);
154    delay(250);
155
156  }
157}
158void animation6() {
159  for (int i = 0; i < sizeof(pattern3); i++)
160  {
161    updateLEDs(pattern3[i]);
162    delay(250);
163  }
164}
165/*
166   updateLEDs()
167  - sends the LED states set in ledStates to the 74HC595
168   sequence
169*/
170void
171  updateLEDs(int value) {
172  //digitalWrite(latch, LOW);     //Pulls the chips latch
173  low
174  //shiftOut(data, clock, LSBFIRST, value); //Shifts out the 8 bits to the
175  shift register
176  //digitalWrite(latch, HIGH);   //Pulls the latch high displaying
177  the data
178  digitalWrite(latch, LOW);    //Pulls the chips latch low
179  for
180  (int i = 0; i < 8; i++) { //Will repeat 8 times (once for each bit)
181    int bit
182  = value & B10000000; //We use a "bitmask" to select only the eighth
183    //bit
184  in our number (the one we are addressing this time through
185    value = value
186  << 1;          //we move our number up one bit value so next time bit 7 will be
187
188    //bit 8 and we will do our math on it
189    if (bit == 128) {
190      digitalWrite(data,
191  HIGH); //if bit 8 is set then set our data pin high
192    }
193    else {
194      digitalWrite(data,
195  LOW);
196    }
197    //if bit 8 is unset then set the data pin low
198    digitalWrite(clock,
199  HIGH);                //the next three lines pulse the clock pin
200    delay(1);
201
202    digitalWrite(clock, LOW);
203  }
204  digitalWrite(latch, HIGH);
205}
206
207
208
209