Instructables
Picture of 101-Led Wreath
This wreath is made out of 101 LEDs and two pieces of wire, with no other components. It can run on a 9-volt battery.

A chance encounter with a 100-pack of green LEDs inspired my daughter and me to make an wreath totally out of LEDs. We wound up using 96 of the green ones, plus 5 red LEDs left over from a previous flea market visit, for a total of 101 LEDs.

It can be twisted together without tools, but soldering makes it sturdier and a pair of needle-nosed pliers and a third hand jig will make it easier.

ROHS LEDs (about a dollar more per pack) and lead-free solder is always an option, or just wash your hands and don't stick your fingers in your mouth.

 
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Step 1: Parts and Tools Required

The parts
100 Green LEDs
5 Red LEDs
A few feet of solid tinned hook-up wire, small gauge such as #26.
Use tinned wire, as plain copper wire would be a distracting color. You may also find special-purpose "bus wire" but don't use a gauge that's too big as it will be hard to sew.

Also Starring
You'll need a power supply or batteries capable of delivering about 0.6-1 amp at 8-10 volts, but that design is not included in this Instructable. Instead, you might like this Super-Simple LED Driver Instructable. Or just use a 9V battery.

For testing the LEDs during construction, If you don't have a power supply, you'll also need one slightly-depleted 9V battery or one fresh 9V battery and a 330 Ohm resistor.

The Tools
To finish the job, you'll need the following tools:
Solder and iron if you wish to solder (recommended but not necessary)
Needle-nosed pliers with wire cutter
Third hand jig (or make your own
Alligator-clip test leads
compukit5 years ago
i post hire a link to my youtube video from my xmis decaration and if promis the ld wreath is in it .
i hope you enyou it.
http://www.youtube.com/watch?v=lJtLA7EfgGQ
leighklotz (author)  compukit5 years ago
Excellent and beautiful decorations you have made over the years.   I'm proud to have you add the 101 LED Wreath, which I see in your upper window at 3:00.  Thank you and Happy Holidays!
o and a happy holidays to you to :)
thnx and youre welkom :).
compukit5 years ago
waw. sees nicely and is also still makelijk make. but how you confirm 5 the red leds. p, s if that of me ready is I put a small film on youtube and place I a link or the small film here:).
leighklotz (author)  compukit5 years ago
Thank you, compukit.  A video of your wreath would be nice to show here.

If you want to do something to show in a video, a PWM power supply like this might be fun: http://www.instructables.com/id/SKGS2GVFOVX0VOK/

For the red LEDs, they are 5 in series.  Voltage drop for red LEDs is about 1.7v, which is lower than for green (~2.2v), so 5 red in series is a little brighter than 4 green at the same supply voltage. See  http://www.instructables.com/community/Green-Led-voltage/

If your 5 red LEDs are too bright reduce the current by putting in a small resistor (10 ohms, 1/8th watt or more)  in series with the 5 red LEDs.


No okay I understand that but how do you confirm them so they walk around and they do + and - given
leighklotz (author)  compukit5 years ago
The red LEDs should be connected plus to minus to plus to minus etc.

+   -   +   -   +  -   +  -   +   -
--|>|-- --|>|-- --|>|-- --|>|-- --|>|--

Connect the left end (+) to the inner ring of the wreath.
Connect the right end (-) to the outer ring of the wreath.

In my wreath design, the red LEDs are always on, and do not blink.  You could use a timer circuit to blink just the red ones together.  If you want the red ones to flash individually, you will need a more complicated circuit.

Does this help?

thanx :) 
i think that i now how to coneckt them now :)
blugyblug5 years ago
HAHA! Just the Instructable for the LED Obsessed Instructables user. But seriously, this is awesome lol. When I saw it I was like "Lolwtf, cool"
I'll have to make this for this Christmas. =] Great instructable and easy directions.