Easy, Low Cost LED Bracelet!!!!!!!




For this Instructable I will be showing how to make an awsome and easy L.E.D. bracelet made with stuff you probebly have in your house!!!

Step 1: Tools and Supplies

You will be needing the following tools:
X-acto knife (a box knife will do just fine)
Needle nosed pliers
Soldering iron

And you will be needing these supplies:
6-10 L.E.D.'s depending on the size of wrist (the color of your choice)
Ample amount of 1/4'' I.D. (inside diameter)  vinly tubing
One button or switch
One AAAA battery (yes i said AAAA for a reason)

Step 2: Aquiring the AAAA Batteries

Now you could go out and spend around $5 alone just for the AAAA battery or you could get them from a regular 9v battery

The first step would be to start opening the case of the 9v battery.

After you get it open you will find 6 AAAA batteries. Thats what we will be using to power our bracelet 

Sorry for the blurry pics

Step 3: Making the Strand of LEDS's

Now to start making the bracelet.

First you're going to want to cut just enough tubing to go around the largest part of your hand

Now set that to the side and lets start working on the LED's

we are going to run them inline like they are in the diagram checking to make sure they are conected properly by testing the strand every time you add a light

You're gonna want to make a strand the is about an inch and a half (1 1/2") shorter than the tubing
(I ended up using around 8 in my strand)

After the strand is done solder 1 long wire onto each lead of  the LED (at least as long as your tubing) then put a piece of tabe between the 2 leads to keep from shorting

Step 4: Finishing the Bracelet

so now you need to feed the wires on the strand of LED's through the tube and pull the LED's through with the wires where there is about 3/4" of empty space in the tube

Now cut the negative side of wire with about 2 inches of it sticking out
solder that end to the switch
then solder a 1" piece to the other terminal of the switch

once your done with that
i took a piece of the metal contacts that were holding the batteries together in the 9v and bent it to make a L shape with a bend on the back to hold it in place inside the tube

now do the same thing on the other side with the positive terminal and NO button

slide the positive end of the battery in the positive side and the negative in the negative

mount the switch and tape the battery in so it doesnt came apart



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    11 Discussions


    3 years ago

    Where did you get your supplies? The switch/ button especially


    4 years ago on Introduction

    How the heck do you power a white LED with a 1.5V battery? Are those magic LEDs?


    5 years ago

    If I can't find the AAAA batteries can I use something else? And if I can what would it be?


    5 years ago

    If I can't find the AAAA batteries can I use something else? And if I can what would it be?


    5 years ago

    If I can't find the AAAA batteries can I use something else? And if I can what would it be?


    6 years ago on Introduction

    Are you sure with 1.5v battery and all these LEDs in parallel, u didn't need any resister? If you used any resister, what size (ohm) you used? Please tell us.


    9 years ago on Introduction

    the "L" shaped piece is for the positive and negative contacts for the battery

    and as for the switch
    the negative wire needs to go to one terminal on the switch and negative wire from the led's need the be soldered to the other terminal. i hope that helps


    9 years ago on Step 4

    could you clarify what needs to do to the switch and batteries and the "L" shaped metal part you're referring to with pictures and/or diagrams? That would really help


    9 years ago on Introduction

    Last couple 9V alkaline batteries I opened up had a different internal cell type.  The 9V I opened up where I found AAAA batteries was a carbon-zinc, a type getting harder to find any more.

    Driving LEDs with a single 1.5V cell?  Where's the boost converter circuit?

    Great concept, decent functional design, good step by step, great low light pictures; but man, you gotta learn how to take macro shots. I swore I needed glasses for a few frames there.