Published December 9, 2017 © GPL3+

Project 11

Every birthday is special. So that the party is remembered, the table decoration plays an essential role. Look at this.

BeginnerFull instructions provided8 hours1,762

Things used in this project

Hardware components

Arduino Nano R3

Arduino UNO

Software apps and online services

Arduino IDE

Story

Every birthday is special. So that the party is remembered, the table decoration plays an essential role. To support the balloons, confetti and streamers, I've considered an electronic variant with Arduino technology.

My family is used to place the birthday year on the table. So far, these numbers were mostly made of paper, cardboard or wood. I wanted to surpass that time. The idea was directly pretty clear. It should be an 11 with different LEDs that are flashing.

At the beginning I wanted to take a simple bistable flip-flop and let the LEDs flash alternately. But I quickly rejected that. Who likes it when it only blinks all evening?

So it was clear that the project needed also a bit of programming. The Arduino Uno suits perfect for this. It offers the necessary numbers of outputs and programming is easy.

Symbolically, each LED is connected in this simple way directly to the pin via a resistor:

But you must not be fooled. If you use all the outputs, you have to handle a lot of wires. The resistors of the LEDs are placed on a small board, which also contains a plug for the Arduino. As a result, there is only one wire to the individual LEDs.

The wire to GND ist connected from LED to LED.

The power supply is implemented via 4 x 1.5 V batteries, which can be set on and off by a switch.

Light-Effects

How the LEDs are switched on an off, is decided by your on imagination. The effects I used can you watch in this video.

The Source-Code

The effects are stored in the voids Effect1 to Effect5.

Have fun with the next birthday party.

PS: Wenn Sie diesen Artikel in deutsch lesen möchten, schauen Sie doch auf techpluscode.de.

Code

projekt_11.ino

int PinA1=0;
int PinB1=7;



void setup() {
  for (int i=PinA1;i<PinA1+7;++i)
    pinMode(i,OUTPUT);  
  for (int i=PinB1;i<PinB1+7;++i)
    pinMode(i,OUTPUT);  
}


void Effekt1() {
   int i;
  
    for (int i=1;i<=10;++i) {
      digitalWrite(PinA1+0,HIGH);
      digitalWrite(PinA1+2,HIGH);
      digitalWrite(PinA1+4,HIGH);
      digitalWrite(PinA1+6,HIGH);
      digitalWrite(PinA1+1,LOW);
      digitalWrite(PinA1+3,LOW);
      digitalWrite(PinA1+5,LOW);
      delay(300);
      digitalWrite(PinA1+0,LOW);
      digitalWrite(PinA1+2,LOW);
      digitalWrite(PinA1+4,LOW);
      digitalWrite(PinA1+6,LOW);
      digitalWrite(PinA1+1,HIGH);
      digitalWrite(PinA1+3,HIGH);
      digitalWrite(PinA1+5,HIGH);
      delay(300);
      digitalWrite(PinB1+0,HIGH);
      digitalWrite(PinB1+2,HIGH);
      digitalWrite(PinB1+4,HIGH);
      digitalWrite(PinB1+6,HIGH);
      digitalWrite(PinB1+1,LOW);
      digitalWrite(PinB1+3,LOW);
      digitalWrite(PinB1+5,LOW);
      delay(300);
      digitalWrite(PinB1+0,LOW);
      digitalWrite(PinB1+2,LOW);
      digitalWrite(PinB1+4,LOW);
      digitalWrite(PinB1+6,LOW);
      digitalWrite(PinB1+1,HIGH);
      digitalWrite(PinB1+3,HIGH);
      digitalWrite(PinB1+5,HIGH);
      delay(300);  
    } 
}

void Effekt2() {
    for (int i=1;i<=4;++i) {
       //Blau
      digitalWrite(PinA1+0,HIGH);
      digitalWrite(PinA1+2,HIGH);
      digitalWrite(PinA1+4,HIGH);
      digitalWrite(PinA1+6,HIGH);
      digitalWrite(PinB1+0,HIGH);
      digitalWrite(PinB1+2,HIGH);
      digitalWrite(PinB1+4,HIGH);
      digitalWrite(PinB1+6,HIGH);
      digitalWrite(PinA1+1,LOW);
      digitalWrite(PinA1+3,LOW);
      digitalWrite(PinA1+5,LOW);
      digitalWrite(PinB1+1,LOW);
      digitalWrite(PinB1+3,LOW);
      digitalWrite(PinB1+5,LOW);
      delay(2000);
      //Rot
      digitalWrite(PinA1+1,HIGH);
      digitalWrite(PinA1+3,HIGH);
      digitalWrite(PinA1+5,HIGH);
      digitalWrite(PinB1+1,HIGH);
      digitalWrite(PinB1+3,HIGH);
      digitalWrite(PinB1+5,HIGH);
      digitalWrite(PinA1+0,LOW);
      digitalWrite(PinA1+2,LOW);
      digitalWrite(PinA1+4,LOW);
      digitalWrite(PinA1+6,LOW);
      digitalWrite(PinB1+0,LOW);
      digitalWrite(PinB1+2,LOW);
      digitalWrite(PinB1+4,LOW);
      digitalWrite(PinB1+6,LOW);
      delay(2000);
    }
  
}

void Effekt3() {
 
  int i;

  for (i=6;i>=0;--i) {
    digitalWrite(PinA1+i,HIGH);
    digitalWrite(PinB1+i,HIGH);
    delay(1000);
  }
  
}


void Effekt4() {
 
  int i;

  for (i=0;i<=6;++i) {
    digitalWrite(PinA1+i,HIGH);
    digitalWrite(PinB1+i,HIGH);
    delay(1000);
  }
  
}

void Effekt4b() {
 
  int i;

  for (i=0;i<=6;++i) {
    digitalWrite(PinA1+i,LOW);
    digitalWrite(PinB1+i,LOW);
    delay(1000);
  }
  
}


void AlleEin() {
 
  int i;

  for (i=0;i<=6;++i) {
    digitalWrite(PinA1+i,HIGH);
    digitalWrite(PinB1+i,HIGH);
  }
  
}

void AlleAus() {
 
  int i;

  for (i=0;i<=6;++i) {
    digitalWrite(PinA1+i,LOW);
    digitalWrite(PinB1+i,LOW);
  }
  
}


void Effekt5() {
 
  int i;

  for (i=0;i<=6;++i) {
    AlleAus();
    digitalWrite(PinB1+i,HIGH);
    delay(300);
  }
  for (i=0;i<=6;++i) {
    AlleAus();
    digitalWrite(PinA1+i,HIGH);
    delay(300);
  }
 AlleAus();
  
}


void loop() {
  /*
  for (int i=PinA1;i<PinA1+8;++i) {
    digitalWrite(i,HIGH);
    delay(50);
    digitalWrite(i,LOW);
  }
  */
 Effekt5();
 Effekt4();
 Effekt4b();
 Effekt5();
 Effekt3();
 Effekt4b();
 Effekt5();
 Effekt2();
 Effekt1();
 Effekt5();
 AlleEin();
 delay(10000); 
 AlleAus(); 
}

Credits

Thomas Angielsky

18 projects • 36 followers

Mechanical engineer, maker, love woodwork, like Lazarus

Project 11

Things used in this project

Hardware components

Software apps and online services

Story

Light-Effects

The Source-Code

Schematics

Schematics

Code

projekt_11.ino

Credits

Thomas Angielsky

Comments

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Project 11

Project 11

Things used in this project

Hardware components

Software apps and online services

Story

Light-Effects

The Source-Code

Schematics

Schematics

Code

projekt_11.ino

Credits

Thomas Angielsky

Comments

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