Up-cycling a cheap Christmas tree's lights

Video on upgrading some cheap battery powered lights on a Christmas tree. Source code further down.

Source code

#define LEDPin 3
#define DOT_DURATION 200        // Time in milliseconds of a dot in morse code

static const char *alpha[] = {
    ".-",   //A
    "-...", //B
    "-.-.", //C
    "-..",  //D
    ".",    //E
    "..-.", //F
    "--.",  //G
    "....", //H
    "..",   //I
    ".---", //J
    "-.-",  //K
    ".-..", //L
    "--",   //M
    "-.",   //N
    "---",  //O
    ".--.", //P
    "--.-", //Q
    ".-.",  //R
    "...",  //S
    "-",    //T
    "..-",  //U
    "...-", //V
    ".--",  //W
    "-..-", //X
    "-.--", //Y
    "--..", //Z
};
static const char *num[] = {
    "-----", //0
    ".----", //1
    "..---", //2
    "...--", //3
    "....-", //4
    ".....", //5
    "-....", //6
    "--...", //7
    "---..", //8
    "----.", //9
};

void setup() {
  // put your setup code here, to run once:
  pinMode(LEDPin,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  MorseCode("MERRY CHRISTMAS");                         // OUTPUT THIS IN MORSE CODE  
  Flash(10,1,0.25);            // Flash 10 times, On of 1 seconds, off for 0.25s
  Flash(20,0.1,0.1);           // Flash 20 times, On of 0.5seconds, off for 0.5
  Pulse(10,1,1);               // Pulse (fade up then down) 10 times, 1 second fade up, 1s fade down
  Flash(10,1,0.5);             // Flash 20 times, On of 1 seconds, off for 0.5
  FadeUp(3);                   // Start at off, fade to max brightness over 3 seconds
  Flash(5,1.5,1.5);
  FadeDown(3);                 // Start at full one, fade to off over 3 seconds
  Pulse(10,1.5,0.5);           // Pulse (fade up then down) 10 times, 1.5 second fade up, 0.5 fade down
  SwitchLights(true,4);        // switch on for four seconds
  Flash(50,0.05,0.05);
  FadeDown(3);
  Pulse(20,0.5,0.5); 
  SwitchLights(false,4);        // switch off for four seconds
}

void SwitchLights(bool State, float Duration)
{
  // switch lights on or off according to state, true for on, false for off
  // on or off for what ever duration is (in seconds)
  digitalWrite(LEDPin,State);   
  delay(Duration*1000);       // convert to milliseconds  
}

void MorseCode(char* Message)
{
  // outputs the "Message" as a morse code, any none alphnumeric char is ignored
  char character;
  for(uint16_t i=0;i<strlen(Message);i++)
  {
    character=toupper(Message[i]);
    if((character>=65) &(character<=90))
    {
      // alpha character
      MorseDecode(alpha[character-65]);   // subtract 65 so that range of codes is 0 to 25 (for A-Z)
    }
    else
    {
      if((character>=48)&(character<=57))
      {
        // number
        MorseDecode(num[character-48]);   // subtract 48 so that range of codes is 0 to 9 (for 0-9)
      }
      else
      {
        if(character==32)  //Space
          delay(DOT_DURATION*4);          // time between words is 7 dot periods, as we'll have just done 3 from end of last char this would give 7
      }
    }
  }
}

void MorseDecode(char* Morse)
{
  // flashes the morse contained in "Morse"
  for(uint8_t i=0;i<strlen(Morse);i++)
  {
    digitalWrite(LEDPin,true);
    if(Morse[i]=='.')
    {
      delay(DOT_DURATION);               // short flash for dot
    }
    else
    {      
      delay(600);               // long flash for dah
    }
    digitalWrite(LEDPin,false);
    delay(DOT_DURATION);        // delay between a dot or a dash is one dot duration
  }
  delay(DOT_DURATION*3);        // delay between letters of a word is 3 dot periods
}

void Flash(uint8_t NumFlashes,float OnDuration,float OffDuration)
{
  // Duration is in seconds
  OnDuration*=1000;                   // convert to milliseconds
  OffDuration*=1000;                   // convert to milliseconds
  for(uint8_t i=0;i<NumFlashes;i++)
  {
    digitalWrite(LEDPin,true);
    delay(OnDuration);
    digitalWrite(LEDPin,false);
    delay(OffDuration);
  }
}

void Pulse(uint8_t NumberPulses, float OnDuration, float OffDuration)
{
  for(uint8_t i=0;i<NumberPulses;i++)
  {
    FadeUp(OnDuration);
    FadeDown(OffDuration);
  }
}

void FadeUp(float FadeTime)  // FadeTime is in seconds
{
  float Value=0;
  float AmountToFadeBy=255/(FadeTime*100);      // we are going to change the brightness every 1/100 of a second
  for(uint16_t i=FadeTime*100;i>0;i--)
  {
    analogWrite(LEDPin,Value);
    Value+=AmountToFadeBy;
    delay(10);
  }
}

void FadeDown(float FadeTime)  // FadeTime is in seconds
{
  float Value=255;
  float AmountToFadeBy=255/(FadeTime*100);      // we are going to change the brightness every 1/100 of a second
  for(uint16_t i=FadeTime*100;i>0;i--)
  {
    analogWrite(LEDPin,Value);
    Value-=AmountToFadeBy;
    delay(10);
  }
}

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#define LEDPin 3

#define DOT_DURATION 200 // Time in milliseconds of a dot in morse code

static const char *alpha[] = {

".-", //A

"-...", //B

"-.-.", //C

"-..", //D

".", //E

"..-.", //F

"--.", //G

"....", //H

"..", //I

".---", //J

"-.-", //K

".-..", //L

"--", //M

"-.", //N

"---", //O

".--.", //P

"--.-", //Q

".-.", //R

"...", //S

"-", //T

"..-", //U

"...-", //V

".--", //W

"-..-", //X

"-.--", //Y

"--..", //Z

};

static const char *num[] = {

"-----", //0

".----", //1

"..---", //2

"...--", //3

"....-", //4

".....", //5

"-....", //6

"--...", //7

"---..", //8

"----.", //9

};

void setup() {

// put your setup code here, to run once:

pinMode(LEDPin,OUTPUT);

}

void loop() {

// put your main code here, to run repeatedly:

MorseCode("MERRY CHRISTMAS"); // OUTPUT THIS IN MORSE CODE

Flash(10,1,0.25); // Flash 10 times, On of 1 seconds, off for 0.25s

Flash(20,0.1,0.1); // Flash 20 times, On of 0.5seconds, off for 0.5

Pulse(10,1,1); // Pulse (fade up then down) 10 times, 1 second fade up, 1s fade down

Flash(10,1,0.5); // Flash 20 times, On of 1 seconds, off for 0.5

FadeUp(3); // Start at off, fade to max brightness over 3 seconds

Flash(5,1.5,1.5);

FadeDown(3); // Start at full one, fade to off over 3 seconds

Pulse(10,1.5,0.5); // Pulse (fade up then down) 10 times, 1.5 second fade up, 0.5 fade down

SwitchLights(true,4); // switch on for four seconds

Flash(50,0.05,0.05);

FadeDown(3);

Pulse(20,0.5,0.5);

SwitchLights(false,4); // switch off for four seconds

}

void SwitchLights(bool State, float Duration)

{

// switch lights on or off according to state, true for on, false for off

// on or off for what ever duration is (in seconds)

digitalWrite(LEDPin,State);

delay(Duration*1000); // convert to milliseconds

}

void MorseCode(char* Message)

{

// outputs the "Message" as a morse code, any none alphnumeric char is ignored

char character;

for(uint16_t i=0;i<strlen(Message);i++)

{

character=toupper(Message[i]);

if((character>=65) &(character<=90))

{

// alpha character

MorseDecode(alpha[character-65]); // subtract 65 so that range of codes is 0 to 25 (for A-Z)

}

else

{

if((character>=48)&(character<=57))

{

// number

MorseDecode(num[character-48]); // subtract 48 so that range of codes is 0 to 9 (for 0-9)

}

else

{

if(character==32) //Space

delay(DOT_DURATION*4); // time between words is 7 dot periods, as we'll have just done 3 from end of last char this would give 7

}

void MorseDecode(char* Morse)

{

// flashes the morse contained in "Morse"

for(uint8_t i=0;i<strlen(Morse);i++)

{

digitalWrite(LEDPin,true);

if(Morse[i]=='.')

{

delay(DOT_DURATION); // short flash for dot

}

else

{

delay(600); // long flash for dah

}

digitalWrite(LEDPin,false);

delay(DOT_DURATION); // delay between a dot or a dash is one dot duration

}

delay(DOT_DURATION*3); // delay between letters of a word is 3 dot periods

}

void Flash(uint8_t NumFlashes,float OnDuration,float OffDuration)

{

// Duration is in seconds

OnDuration*=1000; // convert to milliseconds

OffDuration*=1000; // convert to milliseconds

for(uint8_t i=0;i<NumFlashes;i++)

{

digitalWrite(LEDPin,true);

delay(OnDuration);

digitalWrite(LEDPin,false);

delay(OffDuration);

}

void Pulse(uint8_t NumberPulses, float OnDuration, float OffDuration)

{

for(uint8_t i=0;i<NumberPulses;i++)

{

FadeUp(OnDuration);

FadeDown(OffDuration);

}

void FadeUp(float FadeTime) // FadeTime is in seconds

{

float Value=0;

float AmountToFadeBy=255/(FadeTime*100); // we are going to change the brightness every 1/100 of a second

for(uint16_t i=FadeTime*100;i>0;i--)

{

analogWrite(LEDPin,Value);

Value+=AmountToFadeBy;

delay(10);

}

void FadeDown(float FadeTime) // FadeTime is in seconds

{

float Value=255;

float AmountToFadeBy=255/(FadeTime*100); // we are going to change the brightness every 1/100 of a second

for(uint16_t i=FadeTime*100;i>0;i--)

{

analogWrite(LEDPin,Value);

Value-=AmountToFadeBy;

delay(10);

}