Punk LED Collar - Adafruit IndustriesTen LEDs are wired in parallel with a coincell battery and...

Punk LED CollarCreated by Becky Stern

Last updated on 2018-08-22 03:36:31 PM UTC

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Guide Contents

Guide ContentsOverviewTools & SuppliesCircuit DiagramInstall LEDsSolder ComponentsTest & FinishWear it!

© Adafruit Industries https://learn.adafruit.com/led-punk-collar of 17

OverviewMake your own studded choker with an LED twist! Use these instructions with our kit of parts that comes with all thematerials you'll need for a punk style LED collar (http://adafru.it/1454), or use materials you may already have! Ten juicydiffused red LEDs adorn a high-quality black leather collar that fits necks 12-15 inches (30 to 38 centimeters). Attach theincluded battery holder and potentiometer, used to adjust the brightness of the LEDs. The simple circuit is powered bya single CR2032 battery. Build one yourself and be the star of your next party or parade!

Project assistance and modeling by Risa Rose!


http://www.adafruit.com/products/1454

Tools & Supplies

The Punk LED Collar Kit contains (buy the kit (http://adafru.it/1454) or gather your own supplies):

Leather collar size S/M - (collar measures measures 18" x 1" x 0.1"/457mm x 25mm x 2.74mm)10 x 10mm diffused red LEDs (http://adafru.it/845)Sewable coin cell CR2032 battery holder (http://adafru.it/653)Strip of faux suede fabric to line collar1K trimpot small potentiometerSmall piece of wire2 x CR2032 coin cell batteries (http://adafru.it/654)

You'll need some very common electronics tools to make this project:

Soldering iron (http://adafru.it/180) and solder (http://adafru.it/145)Wire cutters (http://adafru.it/152) and wire stripper (http://adafru.it/147)(or a tool that does both)Pliers (http://adafru.it/146)3rd hand tool (http://adafru.it/291) or Panavise (http://adafru.it/151)or some other way to keep your work steadyA basic multimeter (http://adafru.it/71) is handy as wellFine tip curved tweezers (http://adafru.it/422) make assembly a breeze

And just a few craft supplies:

Craft knife or utility blade with cutting-safe mat or surfaceE6000 or similar craft glueRulerMarker or pencil















Circuit Diagram


Ten LEDs are wired in parallel with a coincell battery and potentiometer. Wire all the (shorter) negative leads to thecenter lead of the potentiometer, then wire all the (longer) positive LED leads to the positive side of the battery holder.Wire the negative side of the battery holder to the leftmost lead of the potentiometer. The rightmost pin of thepotentiometer is not used.


Install LEDs

Put the collar on and decide where you want the LEDs to be in relation to the buckle (your placement may varydepending on your neck size). Start by measuring and marking the locations for the 10 LEDs along the collar (makemarks on the inside surface). Use a ruler and space them just a little less than one inch apart. Use a sharp utility orcraft knife on a cutting-safe surface and slice small vertical slits for the LED legs to pierce through.

Make one extra slit at the end of the row, where the potentiometer will go.


Start inserting LEDs through the slits you made in the

collar, making sure that they are oriented the same way

(all long leads facing one way, all short leads facing the

other).


https://learn.adafruit.com/assets/9794


Buckle the collar, adjusting it to the same size as it will

be on your neck. Ahh, the LED leads look like some sort

of torture device! Fold the negative (shorter) legs of your

LEDs all down in the same direction, towards the end of

the row where the battery will go. Allow the leads to

curve, following the contour of the collar.

Insert the potentiometer into the final slit, and bend the

leads at the inside of the collar to hold it in place-- the

center lead should be bent one way, while the outer two

leads should be bent the other way. This leaves more

room for soldering with less chance of shorting anything

out.

The last negative lead should line up with the center

lead of the potentiometer.





Solder Components

Solder all the negative leads to each other, and solder

the last negative LED lead to the center lead of the

potentiometer. Clip the excess wire.

Repeat the process of folding down the leads, this time

with the positive leads of the LEDs. They should follow

the curve of the collar as if you had it on, and should all

be soldered together.

Solder the last positive LED lead to a piece of wire, then solder the wire to the positive terminal of the battery holder.





The battery holder will rest on the outside of the collar

next to the potentiometer. Solder a piece of wire to one

of the outer potentiometer leads, then connect the other

end of it to the negative side of the battery holder

(marked with a little - sign).

Refer to the circuit diagram (https://adafru.it/ckS) in this

guide if you get confused!

Use a little double stick tape or E6000 glue to affix the battery holder in place after soldering.




http://learn.adafruit.com/led-punk-collar/circuit-diagram

Test & Finish

Check your connections using the circuit diagram as a reference, then insert the battery and turn the knob to test thecircuit. It will need to be turned all the way on one direction to light up. If your LEDs don't turn on, your battery holdermay be connected backwards!


Once you've verified everything's working properly, apply an even layer of E6000 or similar craft glue (not all fabricglues will bond to leather) to the inside surface of the collar where the faux suede will protect and insulate the circuitfrom your neck.

Affix the kit's included strip of faux suede fabric to the

inside of the collar and allow to dry for 24 hours before

wearing.

Do not attempt to lay your collar flat when not in use! The LED leads are soldered in a circle, andunnecessarily bending the collar could break your connections. Treat with care and store the collar buckled!




Wear it!

Buckle up and show off your new electro-punk fashion! To clean it, simply remove the battery and wipe with a dampcloth, allowing to dry before re-inserting the battery. Since the battery is exposed, we don't recommend wearing yourcollar out in the rain unless you take further action to make it water-resistant. The faux suede is made from polyesterand so shouldn't hold too much moisture if you're sweating, but take the collar off if you are really sweaty to avoidquickly draining the battery. =]

Treat your new creation with care! Store it in the round, buckled, and take caution not to bend or flatten it, asthese actions could break your LED connections!


At this time we recommend making this project with RED LEDs only! Blue LEDs have too high of a forwardvoltage for a single coincell to power them all brightly, but try other colors at your own risk.

© Adafruit Industries Last Updated: 2018-08-22 03:36:26 PM UTC of 17

Punk LED Collar - Adafruit IndustriesTen LEDs are wired in parallel with a coincell battery and...

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