Christmas LED Tree Decoration

Wooden Christmas tree decoration, with led rows representing string lights of a Christmas tree and a star on top of it.

Dec 30, 2019

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16848 views

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3 respects

Devices & Components

Arduino Nano

Through Hole Resistor, 33 kohm

Resistor 220 ohm

Resistor 475 ohm

Through Hole Resistor, 680 ohm

Through Hole Resistor, 20 kohm

Resistor 330 ohm

5 mm LED: Green

5 mm LED: Yellow

SparkFun Solder-able Breadboard

5 mm LED: Red

Resistor 100 ohm

General Purpose Transistor NPN

Hardware & Tools

Soldering iron (generic)

Drill / Driver, Cordless

Hot glue gun (generic)

Software & Tools

Arduino IDE

Project description

Code

Simple lightshow

c_cpp

1// LED PINS (n € N)
2//  green: 2n+1, n<5
3//  red: 2n+2, n<5
4//  yellow: n+11, n<3
5
6#define SHORT unsigned short
7
8void setup() {
9  
10  for(SHORT pin=1; pin<14; pin++) 
11    pinMode(pin, OUTPUT);
12}
13
14void  clearLeds() {
15    
16  for(SHORT pin=1; pin<14; pin++)
17    digitalWrite(pin,  LOW);
18}
19
20void firstProgramme() {
21  
22  for(SHORT pin=1; pin<14; pin++)
23    digitalWrite(pin, HIGH);
24
25  delay(3000);
26
27  clearLeds();
28}
29
30void  secondProgramme() {
31
32  delay(700);
33
34  for(SHORT n=0; n<5; n++) {
35    
36    digitalWrite(2*n+1, HIGH);
37    digitalWrite(2*n+2, HIGH);
38    
39    delay(700);
40  }
41
42  for(SHORT pin=11; pin<14; pin++)
43    digitalWrite(pin,  HIGH);
44
45  delay(700);
46
47  for(SHORT i=0; i<6; i++)
48    for(SHORT n=13;  n>10; n--) {
49      
50      for(SHORT pin=11; pin<14; pin++)
51         digitalWrite(pin,  pin == n);
52
53      delay(100);
54    }
55
56 digitalWrite(11, LOW);
57
58  for(SHORT pin=13; pin>10; pin--) {
59    digitalWrite(pin, HIGH);
60    delay(100);
61  }
62
63  clearLeds();
64}
65
66void thirdProgramme() {
67
68  SHORT counter  = 0;
69  
70  for(SHORT pin=11; pin<14; pin++)
71    digitalWrite(pin, HIGH);
72
73  while(counter<31) {
74    
75    for(SHORT pin=1; pin<11; pin++)
76      digitalWrite(pin,  (pin + counter)%2);
77
78    delay(300);
79    counter++;
80  }
81
82  clearLeds();
83}
84
85void  loop() {
86
87  firstProgramme();
88  secondProgramme();
89  thirdProgramme();
90   
91}

// LED PINS (n € N)
//  green: 2n+1, n<5
//  red: 2n+2, n<5
//  yellow: n+11, n<3

#define SHORT unsigned short

void setup() {
  
  for(SHORT pin=1; pin<14; pin++) 
    pinMode(pin, OUTPUT);
}

void  clearLeds() {
    
  for(SHORT pin=1; pin<14; pin++)
    digitalWrite(pin,  LOW);
}

void firstProgramme() {
  
  for(SHORT pin=1; pin<14; pin++)
    digitalWrite(pin, HIGH);

  delay(3000);

  clearLeds();
}

void  secondProgramme() {

  delay(700);

  for(SHORT n=0; n<5; n++) {
    
    digitalWrite(2*n+1, HIGH);
    digitalWrite(2*n+2, HIGH);
    
    delay(700);
  }

  for(SHORT pin=11; pin<14; pin++)
    digitalWrite(pin,  HIGH);

  delay(700);

  for(SHORT i=0; i<6; i++)
    for(SHORT n=13;  n>10; n--) {
      
      for(SHORT pin=11; pin<14; pin++)
         digitalWrite(pin,  pin == n);

      delay(100);
    }

 digitalWrite(11, LOW);

  for(SHORT pin=13; pin>10; pin--) {
    digitalWrite(pin, HIGH);
    delay(100);
  }

  clearLeds();
}

void thirdProgramme() {

  SHORT counter  = 0;
  
  for(SHORT pin=11; pin<14; pin++)
    digitalWrite(pin, HIGH);

  while(counter<31) {
    
    for(SHORT pin=1; pin<11; pin++)
      digitalWrite(pin,  (pin + counter)%2);

    delay(300);
    counter++;
  }

  clearLeds();
}

void  loop() {

  firstProgramme();
  secondProgramme();
  thirdProgramme();
   
}

Simple lightshow

c_cpp

1// LED PINS (n € N)
2//  green: 2n+1, n<5
3//  red: 2n+2, n<5
4//   yellow: n+11, n<3
5
6#define SHORT unsigned short
7
8void setup() {
9   
10  for(SHORT pin=1; pin<14; pin++) 
11    pinMode(pin, OUTPUT);
12}
13
14void   clearLeds() {
15    
16  for(SHORT pin=1; pin<14; pin++)
17    digitalWrite(pin,   LOW);
18}
19
20void firstProgramme() {
21  
22  for(SHORT pin=1; pin<14; pin++)
23     digitalWrite(pin, HIGH);
24
25  delay(3000);
26
27  clearLeds();
28}
29
30void   secondProgramme() {
31
32  delay(700);
33
34  for(SHORT n=0; n<5; n++) {
35     
36    digitalWrite(2*n+1, HIGH);
37    digitalWrite(2*n+2, HIGH);
38    
39     delay(700);
40  }
41
42  for(SHORT pin=11; pin<14; pin++)
43    digitalWrite(pin,   HIGH);
44
45  delay(700);
46
47  for(SHORT i=0; i<6; i++)
48    for(SHORT n=13;   n>10; n--) {
49      
50      for(SHORT pin=11; pin<14; pin++)
51         digitalWrite(pin,   pin == n);
52
53      delay(100);
54    }
55
56 digitalWrite(11, LOW);
57
58   for(SHORT pin=13; pin>10; pin--) {
59    digitalWrite(pin, HIGH);
60    delay(100);
61   }
62
63  clearLeds();
64}
65
66void thirdProgramme() {
67
68  SHORT counter   = 0;
69  
70  for(SHORT pin=11; pin<14; pin++)
71    digitalWrite(pin, HIGH);
72
73   while(counter<31) {
74    
75    for(SHORT pin=1; pin<11; pin++)
76      digitalWrite(pin,   (pin + counter)%2);
77
78    delay(300);
79    counter++;
80  }
81
82  clearLeds();
83}
84
85void   loop() {
86
87  firstProgramme();
88  secondProgramme();
89  thirdProgramme();
90    
91}

// LED PINS (n € N)
//  green: 2n+1, n<5
//  red: 2n+2, n<5
//   yellow: n+11, n<3

#define SHORT unsigned short

void setup() {
   
  for(SHORT pin=1; pin<14; pin++) 
    pinMode(pin, OUTPUT);
}

void   clearLeds() {
    
  for(SHORT pin=1; pin<14; pin++)
    digitalWrite(pin,   LOW);
}

void firstProgramme() {
  
  for(SHORT pin=1; pin<14; pin++)
     digitalWrite(pin, HIGH);

  delay(3000);

  clearLeds();
}

void   secondProgramme() {

  delay(700);

  for(SHORT n=0; n<5; n++) {
     
    digitalWrite(2*n+1, HIGH);
    digitalWrite(2*n+2, HIGH);
    
     delay(700);
  }

  for(SHORT pin=11; pin<14; pin++)
    digitalWrite(pin,   HIGH);

  delay(700);

  for(SHORT i=0; i<6; i++)
    for(SHORT n=13;   n>10; n--) {
      
      for(SHORT pin=11; pin<14; pin++)
         digitalWrite(pin,   pin == n);

      delay(100);
    }

 digitalWrite(11, LOW);

   for(SHORT pin=13; pin>10; pin--) {
    digitalWrite(pin, HIGH);
    delay(100);
   }

  clearLeds();
}

void thirdProgramme() {

  SHORT counter   = 0;
  
  for(SHORT pin=11; pin<14; pin++)
    digitalWrite(pin, HIGH);

   while(counter<31) {
    
    for(SHORT pin=1; pin<11; pin++)
      digitalWrite(pin,   (pin + counter)%2);

    delay(300);
    counter++;
  }

  clearLeds();
}

void   loop() {

  firstProgramme();
  secondProgramme();
  thirdProgramme();
    
}

Downloadable files

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SIngle color series circuit

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henyte

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