Introduction: Bright Little LED Christmas Tree - 9V

Items:
x15 - LEDs (green red yellow)
x5   - 47 OHM Resistor (YellowPurpleBlack
12 inches of Thick Gauge wire for tree frame
x2 solid core thin wire for Power Rails (22awg)
9V battery with latching clip
Single Pole Single throw switch.
Solder tools
A project box

Make 53 sets of 3 LED each in triangle formation Anode to Cathode  leaving The last joint open to patch into the resistor and 9v GND Rails.

Make one set of 3 LED shorter foward the Tip of the Tree.

In last set leave a yellow LED pointed up, this will be the star. 

Strip to solid core wires to be the GND and 9V rails going up the tree.

Solder the Anode side of the LED sets to the Resistor and solder the resistor to the 9V rail. Solder cathode to the GND Rail.



Schematic:
                                                                                                                         
                                       Yellow                                                                       X
|---Resistor----LED-----LED-----LED-----|                                                 O O                           
|                                                                     |                                                 
|                                                                     |                                                   
|---Resistor----LED-----LED-----LED-----|                                           O       O      O
|                                                                     |
|                                                                     |  
|---Resistor----LED-----LED-----LED-----|                                        O         O           O
|                                                                     |
|                                                                     | 
|---Resistor----LED-----LED-----LED-----|                                   O               O                 O
|                                                                     |
|                                                                     | 
|---Resistor----LED-----LED-----LED-----|                            O                       O                         O
|                                                                     |
|                                                                     |
|     ON/OFF                                                 |
|__SWITCH___+Battery-_________GND




1 Coil your thick wire using your hands. Make sure you leave the Insulation on it to prevent shorts.
2  LED Assembly.
  

              +LED 
                   /\
      +LED<    >+LED
Resistor[]    |
                 |     |
              9V  GND

Comments

author
wilgubeast (author)2013-12-11

Cool. And great reuse of a SparkFun box. :D

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