# Punk LED Collar ## Overview http://www.youtube.com/watch?v=tpAJYmFkJ3A Make your own studded choker with an LED twist! Use these instructions with our [kit of parts that comes with all the materials you'll need for a punk style LED collar](http://www.adafruit.com/products/1454), or use materials you may already have! Ten juicy diffused red LEDs adorn a high-quality black leather collar that fits necks 12-15 inches (30 to 38 centimeters). Attach the included battery holder and potentiometer, used to adjust the brightness of the LEDs. The simple circuit is powered by a single CR2032 battery. Build one yourself and be the star of your next party or parade! Project assistance and modeling by Risa Rose! ![](https://cdn-learn.adafruit.com/assets/assets/000/009/791/medium800/braincrafts_risarose_punk_LED_collar.jpg?1396897110) ![](https://cdn-learn.adafruit.com/assets/assets/000/009/790/medium800/braincrafts_risa_rose_LED_punk_collar_.jpg?1396897064) ![](https://cdn-learn.adafruit.com/assets/assets/000/009/792/medium800/braincrafts_risa_rose_punk_led_collar_nycskyline.jpg?1396897157) # Punk LED Collar ## Tools & Supplies ![](https://cdn-learn.adafruit.com/assets/assets/000/009/784/medium800/braincrafts_StuddedLEDcollar_img1.jpg?1396896895) The Punk LED Collar Kit contains ([buy the kit](http://www.adafruit.com/products/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://www.adafruit.com/products/845 "Link: http://www.adafruit.com/products/845") - [Sewable coin cell CR2032 battery holder](http://www.adafruit.com/products/653 "Link: http://www.adafruit.com/products/653") - Strip of faux suede fabric to line collar - 1K trimpot small potentiometer - Small piece of wire - 2 x [CR2032 coin cell batteries](http://www.adafruit.com/products/654) You'll need some very common electronics tools to make this project: - [Soldering iron](http://www.adafruit.com/products/180) and [solder](http://www.adafruit.com/products/145) - [Wire cutters](http://www.adafruit.com/products/152) and [wire stripper](http://www.adafruit.com/products/147)(or a tool that does both) - [Pliers](http://www.adafruit.com/products/146) - [3rd hand tool](http://www.adafruit.com/products/291) or [Panavise](http://www.adafruit.com/products/151)or some other way to keep your work steady - A [basic multimeter](http://www.adafruit.com/products/71) is handy as well - [Fine tip curved tweezers](http://www.adafruit.com/products/422) make assembly a breeze And just a few craft supplies: - Craft knife or utility blade with cutting-safe mat or surface - E6000 or similar craft glue - Ruler - Marker or pencil # Punk LED Collar ## Circuit Diagram ![](https://cdn-learn.adafruit.com/assets/assets/000/009/814/medium800/braincrafts_punk-collar-diagram.jpg?1396897531) Ten LEDs are wired in parallel with a coincell battery and potentiometer. Wire all the (shorter) negative leads to the center 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 the potentiometer is not used. # Punk LED Collar ## Install LEDs ![](https://cdn-learn.adafruit.com/assets/assets/000/009/788/medium800/braincrafts_StuddedLEDcollar_img2.jpg?1396896963) Put the collar on and decide where you want the LEDs to be in relation to the buckle (your placement may vary depending on your neck size). Start by measuring and marking the locations for the 10 LEDs along the collar (make marks on the inside surface). Use a ruler and space them just a little less than one inch apart. Use a sharp utility or craft knife on a cutting-safe surface and slice small vertical slits for the LED legs to pierce through. ![](https://cdn-learn.adafruit.com/assets/assets/000/009/793/medium800/braincrafts_StuddedLEDcollar_img3.jpg?1396897189) 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). ![braincrafts_StuddedLEDcollar_img4.jpg](https://cdn-learn.adafruit.com/assets/assets/000/009/794/medium640/braincrafts_StuddedLEDcollar_img4.jpg?1396897222) ![braincrafts_StuddedLEDcollar_img5.jpg](https://cdn-learn.adafruit.com/assets/assets/000/009/795/medium640/braincrafts_StuddedLEDcollar_img5.jpg?1396897253) 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. ![braincrafts_StuddedLEDcollar_img6.jpg](https://cdn-learn.adafruit.com/assets/assets/000/009/796/medium640/braincrafts_StuddedLEDcollar_img6.jpg?1396897285) ![braincrafts_StuddedLEDcollar_img7.jpg](https://cdn-learn.adafruit.com/assets/assets/000/009/797/medium640/braincrafts_StuddedLEDcollar_img7.jpg?1396897321) The last negative lead should line up with the center lead of the potentiometer. ![braincrafts_StuddedLEDcollar_img8.jpg](https://cdn-learn.adafruit.com/assets/assets/000/009/798/medium640/braincrafts_StuddedLEDcollar_img8.jpg?1396897353) # Punk LED Collar ## 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. ![braincrafts_StuddedLEDcollar_img9.jpg](https://cdn-learn.adafruit.com/assets/assets/000/009/815/medium640/braincrafts_StuddedLEDcollar_img9.jpg?1396897846) ![braincrafts_StuddedLEDcollar_img10.jpg](https://cdn-learn.adafruit.com/assets/assets/000/009/816/medium640/braincrafts_StuddedLEDcollar_img10.jpg?1396897874) ![braincrafts_StuddedLEDcollar_img11.jpg](https://cdn-learn.adafruit.com/assets/assets/000/009/817/medium640/braincrafts_StuddedLEDcollar_img11.jpg?1396897905) 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](http://learn.adafruit.com/led-punk-collar/circuit-diagram) in this guide if you get confused! ![braincrafts_StuddedLEDcollar_img14.jpg](https://cdn-learn.adafruit.com/assets/assets/000/009/810/medium640/braincrafts_StuddedLEDcollar_img14.jpg?1396897755) ![braincrafts_StuddedLEDcollar_img15.jpg](https://cdn-learn.adafruit.com/assets/assets/000/009/811/medium640/braincrafts_StuddedLEDcollar_img15.jpg?1396897786) Use a little double stick tape or E6000 glue to affix the battery holder in place after soldering. ![](https://cdn-learn.adafruit.com/assets/assets/000/009/812/medium800/braincrafts_StuddedLEDcollar_img16.jpg?1396897814) # Punk LED Collar ## Test & Finish ![](https://cdn-learn.adafruit.com/assets/assets/000/009/818/medium800/braincrafts_Screen_Shot_2013-07-24_at_12.09.31_PM.png?1396897494) Check your connections using the circuit diagram as a reference, then insert the battery and turn the knob to test the circuit. It will need to be turned all the way on one direction to light up. If your LEDs don't turn on, your battery holder may be connected backwards! ![](https://cdn-learn.adafruit.com/assets/assets/000/009/819/medium800/braincrafts_Screen_Shot_2013-07-24_at_12.17.03_PM.png?1396897983) Once you've verified everything's working properly, apply an even layer of E6000 or similar craft glue (not all fabric glues will bond to leather) to the inside surface of the collar where the faux suede will protect and insulate the circuit from your neck. Info: 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. ![braincrafts_Screen_Shot_2013-07-24_at_12.20.52_PM.png](https://cdn-learn.adafruit.com/assets/assets/000/009/820/medium640/braincrafts_Screen_Shot_2013-07-24_at_12.20.52_PM.png?1396898072) ![braincrafts_Screen_Shot_2013-07-24_at_12.21.06_PM.png](https://cdn-learn.adafruit.com/assets/assets/000/009/821/medium640/braincrafts_Screen_Shot_2013-07-24_at_12.21.06_PM.png?1396898132) # Punk LED Collar ## Wear it! ![](https://cdn-learn.adafruit.com/assets/assets/000/009/824/medium800/braincrafts_infocus_ledpunkcollar.jpg?1396898176) Buckle up and show off your new electro-punk fashion! To clean it, simply remove the battery and wipe with a damp cloth, allowing to dry before re-inserting the battery. Since the battery is exposed, we don't recommend wearing your collar out in the rain unless you take further action to make it water-resistant. The faux suede is made from polyester and so shouldn't hold too much moisture if you're sweating, but take the collar off if you are _really_ sweaty to avoid quickly draining the battery. =] Info: ![](https://cdn-learn.adafruit.com/assets/assets/000/009/825/medium800/braincrafts_risa_rose_LED_punk_collar_.jpg?1396898231) Info: ![](https://cdn-learn.adafruit.com/assets/assets/000/009/826/medium800/braincrafts_risarose_punk_LED_collar.jpg?1396898278) ## Featured Products ### Punk LED Collar Kit - Red LEDs [Punk LED Collar Kit - Red LEDs](https://www.adafruit.com/product/1454) Make your own studded choker with an LED twist! This kit of parts comes with all the materials you'll need for a punk style LED collar. Ten juicy diffused red LEDs adorn a high-quality black leather collar that fits necks 12-15 inches (30 to 38 centimeters). Attach the included battery... No Longer Stocked [Buy Now](https://www.adafruit.com/product/1454) [Related Guides to the Product](https://learn.adafruit.com/products/1454/guides) ### Diffused Red 10mm LED (25 pack) [Diffused Red 10mm LED (25 pack)](https://www.adafruit.com/product/845) Need some big indicators? We are big fans of these huge diffused red LEDs. They are fairly bright so they can be seen in daytime, and from any angle. They go easily into a breadboard and will add that extra zing to your project. - Pack of 25 diffused red LEDs - 10mm... No Longer Stocked [Buy Now](https://www.adafruit.com/product/845) [Related Guides to the Product](https://learn.adafruit.com/products/845/guides) ### Sewable CR2032 Battery Holder [Sewable CR2032 Battery Holder](https://www.adafruit.com/product/653) This battery holder is by far the easiest way to add a battery to a small wearable project. By coincidence, there are two small 1mm diameter holes in the metal connection tabs, just large enough for a #5 or smaller needle to pass through. One tab connects to common ground (negative) and the... In Stock [Buy Now](https://www.adafruit.com/product/653) [Related Guides to the Product](https://learn.adafruit.com/products/653/guides) ### CR2032 Lithium Coin Cell Battery [CR2032 Lithium Coin Cell Battery](https://www.adafruit.com/product/654) A perfect match for our [sew-able coin cell holder](http://www.adafruit.com/products/653). This non-rechargeable coin cell is CR2032 sized: 20mm diameter, 3.2mm thick. It has a nominal voltage output of 3V (although it starts a little high at 3.2V and slowly drifts down to 2.5V as... In Stock [Buy Now](https://www.adafruit.com/product/654) [Related Guides to the Product](https://learn.adafruit.com/products/654/guides) ### Fine tip curved tweezers - ESD safe [Fine tip curved tweezers - ESD safe](https://www.adafruit.com/product/422) When soldering small surface-mount (SMD/SMT) components, one thing you'll need is a good pair of tweezers. These are a great pair of every-day tweezers. They're anti-static, anti-magnetic and made of hard stainless steel. The tips are fine and pointy to pick up any size component. This... In Stock [Buy Now](https://www.adafruit.com/product/422) [Related Guides to the Product](https://learn.adafruit.com/products/422/guides) ### Digital Genuine Hakko FX888DX-010SV (936 upgrade) [Digital Genuine Hakko FX888DX-010SV (936 upgrade)](https://www.adafruit.com/product/1204) Known by engineers for making excellent quality tools & soldering irons! This is a genuine Hakko FX-888D with **digital temperature control**! We worked hard to get the best and a great price, these are **not**  knock-offs. This iron is an upgrade to the... No Longer Stocked [Buy Now](https://www.adafruit.com/product/1204) [Related Guides to the Product](https://learn.adafruit.com/products/1204/guides) ### Helping Third Hand Magnifier W/Magnifying Glass Tool [Helping Third Hand Magnifier W/Magnifying Glass Tool](https://www.adafruit.com/product/291) The classic 'third hand tool,' as seen on every desk! We have one next to our [Panavise jr](//www.adafruit.com/products/151), they complement each other well. This tool is good for holding small PCBs and wires for tinning or soldering to parts.   - Every... In Stock [Buy Now](https://www.adafruit.com/product/291) [Related Guides to the Product](https://learn.adafruit.com/products/291/guides) ### Flush diagonal cutters [Flush diagonal cutters](https://www.adafruit.com/product/152) These are the best diagonal cutters, large super-comfortable grip to use and have strong nippers for perfect trimming of wires and leads. I've used my pair every day for years. 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