# Glowing Skullcandy Headphones Mod ## Overview https://www.youtube.com/watch?v=Y4X2TXiSFMY Mod your headphones to glow! Express your personal blinken-style by adding 14 color-changing NeoPixels to a white pair of Skullcandy headphones. This intermediate-level soldering project embeds a FLORA main board in one earphone and uses a piece of ribbon wire to connect to the other earphone. Each pixel is addressable, so the colors an animation possibilities are endless! ![](https://cdn-learn.adafruit.com/assets/assets/000/010/437/medium800/flora_RisaRose_Skullcandy_LED_Headphones.jpg?1396905769) Project assistance and modeling by the inimitable Risa Rose! # Glowing Skullcandy Headphones Mod ## Tools & Supplies Prerequisite guides: - [Getting Started with FLORA](http://learn.adafruit.com/getting-started-with-flora) - [FLORA RGB smart NeoPixels](http://learn.adafruit.com/flora-rgb-smart-pixels) You will need the following materials: - [FLORA main board](http://www.adafruit.com/products/659) - 14 [FLORA NeoPixels](http://www.adafruit.com/products/1260) or 2 [NeoPixel rings](http://www.adafruit.com/products/1463) - [Tactile on/off switch](http://www.adafruit.com/products/1092) - [Tiny lipoly battery](http://www.adafruit.com/products/1317) with [charger](http://www.adafruit.com/products/1304) - Stranded ribbon wire (at least three conductors, this [fabric ribbon 4-channel wire](http://www.adafruit.com/products/1373) is good if you don't already have some regular ribbon cable in your toolbox) - [Solid-core hookup wire](http://www.adafruit.com/products/290) - [Heat-shrink tubing](http://www.adafruit.com/products/344) - Clear packing tape You will need the following tools: Any entry level 'all-in-one' soldering iron that you might find at your local hardware store should work. As with most things in life, you get what you pay for. Upgrading to a higher end soldering iron setup, like the [Hakko FX-888 that we stock in our store](https://www.adafruit.com/product/1204), will make soldering fun and easy. Do not use a "ColdHeat" soldering iron! They are not suitable for delicate electronics work and can damage the Flora ([see here](http://www.epemag.wimborne.co.uk/cold-soldering2.htm)). [Click here to buy our entry level adjustable 30W 110V soldering iron.](http://adafruit.com/products/180) [Click here to upgrade to a Genuine Hakko FX-888 adjustable temperature soldering iron.](https://www.adafruit.com/product/1204 "Link: http://adafruit.com/products/303") [Learn how to solder with tons of tutorials!](http://learn.adafruit.com/adafruit-guide-excellent-soldering) ![flora_hakko-soldering-iron.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/451/medium640/flora_hakko-soldering-iron.jpg?1396904398) ![flora_simple-soldering-iron.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/452/medium640/flora_simple-soldering-iron.jpg?1396906065) You will want rosin core, 60/40 solder. Good solder is a good thing. Bad solder leads to bridging and cold solder joints which can be tough to find. [Click here to buy a spool of leaded solder (recommended for beginners).](http://adafruit.com/products/145 "Link: http://adafruit.com/products/145") [Click here to buy a spool of lead-free solder.](http://adafruit.com/products/734 "Link: http://adafruit.com/products/734") ![flora_solder.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/453/medium640/flora_solder.jpg?1396906076) You will need a good quality basic multimeter that can measure voltage and continuity. [Click here to buy a basic multimeter.](http://adafruit.com/products/71) [Click here to buy a top of the line multimeter.](http://adafruit.com/products/308) [Click here to buy a pocket multimeter.](http://adafruit.com/products/850) [Don't forget to learn how to use your multimeter too!](http://learn.adafruit.com/multimeters "Link: http://learn.adafruit.com/multimeters") ![flora_multimeter.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/454/medium640/flora_multimeter.jpg?1396906090) Don't forget your [wire strippers](https://www.adafruit.com/products/527), [pliers](https://www.adafruit.com/products/146), and [flush snips](https://www.adafruit.com/products/152)! ![flora_wire-strippers.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/455/medium640/flora_wire-strippers.jpg?1396906105) ![flora_pliers.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/458/medium640/flora_pliers.jpg?1396906141) ![flora_snips.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/459/medium640/flora_snips.jpg?1396906156) A helping third hand tool really makes this project a joy to build. [Click here to buy a helping third hand tool.](https://www.adafruit.com/products/291) ![flora_helping-hands.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/461/medium640/flora_helping-hands.jpg?1396906225) # Glowing Skullcandy Headphones Mod ## Circuit Diagram ![](https://cdn-learn.adafruit.com/assets/assets/000/010/414/medium800/flora_headphones-diagram.jpg?1396905195) Click to enlarge! Two rings of seven NeoPixels each are connected to FLORA: VBATT to (+), GND to (-), and D6 to the inward facing arrow on the first pixel. The second ring's first pixel is connected to the first ring's last (center) pixel so that each LED in the project is individually addressable, but if you wanted the rings to animate exactly the same patterns all the time, you could wire both rings' inputs to D6. The tiny lipoly battery is connected to FLORA through the JST connector, and the tactile on/off switch interrupts one of its wires. FLORA's onboard switch will be hidden inside the earphone, so this switch can stick out one of the earphones and allow you to turn the circuit on and off! # Glowing Skullcandy Headphones Mod ## Disassemble & Prep Headphones Grab a bin to store all the headphone parts. Even a big zip-top bag works! Think ahead about how you're going to keep all the parts together, especially if you're not doing the project all in one day. Remove the foam pads from the ears and store them for later. Use a screwdriver to remove the earphones, being careful not to rip the delicate wires soldered to them (you can always re-solder it if one does break) ![flora_glowing-skullcandy-headphones-adafruit-00.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/379/medium640/flora_glowing-skullcandy-headphones-adafruit-00.jpg?1396904386) ![](https://cdn-learn.adafruit.com/assets/assets/000/010/382/medium800/flora_glowing-skullcandy-headphones-adafruit-02.jpg?1396904451) Drill a hole in the top of the earphones big enough for a three-conductor piece of ribbon wire to go through. This will connect the output of one LED ring to the input of the other. Leave plenty of slack in the wire, as you can always store it in the earphone but can't add more length later. # Glowing Skullcandy Headphones Mod ## Make Pixel Rings For full light coverage, we made a ring from FLORA NeoPixels. However if you want to do less soldering, pick up two NeoPixel rings and skip this step! Lay a piece of wide tape on your work surface, sticky side up. Tape this piece to the table at the edges so it doesn't slide around or lift up! Use tweezers to arrange six pixels in a circle, with the + sides towards the inside of the circle. Strip a piece of wire and form it into a circle appropriately sized to match up with all the + pads on the pixels and solder in place. Remove the ring from the tape. ![flora_glowing-skullcandy-headphones-adafruit-03.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/381/medium640/flora_glowing-skullcandy-headphones-adafruit-03.jpg?1396904419) ![flora_glowing-skullcandy-headphones-adafruit-04.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/386/medium640/flora_glowing-skullcandy-headphones-adafruit-04.jpg?1396904478) Place the ring in the jaws of a pair of helping hands, and use small staple-shaped bits of wire to connect the data lines as outlined in the circuit diagram (outward facing arrows to inward facing arrows) in all the gaps except one. ![flora_glowing-skullcandy-headphones-adafruit-05.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/388/medium640/flora_glowing-skullcandy-headphones-adafruit-05.jpg?1396904596) To diffuse inside the earphone, the LEDs need to be spaced a small distance away from the outer plastic surface. Solder small lengths of wire sticking straight out from all the - pads on the pixels. Make them longer than you think you need, since you can always trim them later. Use a long piece of wire in another circle to connect all the grounds (-) together. To reduce the possibility of shorts, we used an insulated wire that's had the insulation stripped just in the spots where the wire meets the pixel. Solder the circle to the "posts." Connect the seventh pixel in the center, soldering + to the center circle, - with an insulated wire to the outer ground ring, and the data input from the data output of the last unconnected pixel in the ring as shown. ![flora_glowing-skullcandy-headphones-adafruit-06.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/394/medium640/flora_glowing-skullcandy-headphones-adafruit-06.jpg?1396904723) ![flora_glowing-skullcandy-headphones-adafruit-07.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/395/medium640/flora_glowing-skullcandy-headphones-adafruit-07.jpg?1396904754) ![](https://cdn-learn.adafruit.com/assets/assets/000/010/396/medium800/flora_glowing-skullcandy-headphones-adafruit-09.jpg?1396904773) One ring finished! Now make another just like it. # Glowing Skullcandy Headphones Mod ## Program & Test ![](https://cdn-learn.adafruit.com/assets/assets/000/010/384/medium800/flora_glowing-skullcandy-headphones-adafruit-08.jpg?1396904513) Hook up your rings to the FLORA main board with alligator clips and load up the NeoPixel test code to ensure they're working properly before proceeding. Below is the animation code we used for the headphones, which is just a very minor modification to the standard strandtest sketch, altered to wipe the pixels to various colors. Copy and paste this code into the Adafruit Arduino IDE: ``` #include <Adafruit_NeoPixel.h> // Parameter 1 = number of pixels in strip // Parameter 2 = pin number (most are valid) // Parameter 3 = pixel type flags, add together as needed: // NEO_RGB Pixels are wired for RGB bitstream // NEO_GRB Pixels are wired for GRB bitstream // NEO_KHZ400 400 KHz bitstream (e.g. FLORA pixels) // NEO_KHZ800 800 KHz bitstream (e.g. High Density LED strip) Adafruit_NeoPixel strip = Adafruit_NeoPixel(14, 6, NEO_GRB + NEO_KHZ800); void setup() { strip.begin(); strip.show(); // Initialize all pixels to 'off' } void loop() { // Some example procedures showing how to display to the pixels: colorWipe(strip.Color(255, 0, 0), 50); // Red colorWipe(strip.Color(0, 255, 0), 50); // Green colorWipe(strip.Color(200, 0, 218), 50); // Blue colorWipe(strip.Color(17, 249, 230), 50); // Blue colorWipe(strip.Color(235, 249, 17), 50); // Blue colorWipe(strip.Color(17, 93, 249), 50); // Blue colorWipe(strip.Color(255, 164, 56), 50); // Blue colorWipe(strip.Color(255, 56, 112), 50); // Blue colorWipe(strip.Color(56, 164, 255), 50); // Blue colorWipe(strip.Color(255, 56, 140), 50); // Blue //rainbow(20); //rainbowCycle(20); } // Fill the dots one after the other with a color void colorWipe(uint32_t c, uint8_t wait) { for(uint16_t i=0; i<strip.numPixels(); i++) { strip.setPixelColor(i, c); strip.show(); delay(wait); } } void rainbow(uint8_t wait) { uint16_t i, j; for(j=0; j<256; j++) { for(i=0; i<strip.numPixels(); i++) { strip.setPixelColor(i, Wheel((i+j) & 255)); } strip.show(); delay(wait); } } // Slightly different, this makes the rainbow equally distributed throughout void rainbowCycle(uint8_t wait) { uint16_t i, j; for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel for(i=0; i< strip.numPixels(); i++) { strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255)); } strip.show(); delay(wait); } } // Input a value 0 to 255 to get a color value. // The colours are a transition r - g - b - back to r. uint32_t Wheel(byte WheelPos) { if(WheelPos < 85) { return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0); } else if(WheelPos < 170) { WheelPos -= 85; return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3); } else { WheelPos -= 170; return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3); } } ``` # Glowing Skullcandy Headphones Mod ## Install Circuit Replace the speaker/plastic earphone plate and screw it back together. If your headphones have an easily-accessible channel running over the head, you can run your ribbon wire through it. Ours didn't so we just tucked the wire against the over-head piece and glued it in place (these Skullcandy headphones have a silicone over-head piece that necessitated a silicone-based adhesive). ![flora_glowing-skullcandy-headphones-adafruit-15.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/399/medium640/flora_glowing-skullcandy-headphones-adafruit-15.jpg?1396904865) Position the ring in the center of the earphone and use clear packing tape across the back and up the insides of the plastic earphone. The ring doesn't need much help to stay in place, so the tape helps just enough, and has the added bonus of insulating the back of the LED ring from the exposed contacts on the back of the earphone's speaker. Use a pair of tweezers or pliers to gently pull a small amount of wire slack into the earphone through the hole you drilled earlier. This will allow you to easily adjust the headphones without yanking any of your solder joints. ![flora_glowing-skullcandy-headphones-adafruit-13.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/398/medium640/flora_glowing-skullcandy-headphones-adafruit-13.jpg?1396904838) ![flora_glowing-skullcandy-headphones-adafruit-14.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/406/medium640/flora_glowing-skullcandy-headphones-adafruit-14.jpg?1396904917) Solder one wire to each power and ground (+ and -) lines of the pixel ring. Solder the third wire to the input of the first pixel in the ring. This is the "all alone" ring that goes in the second earphone. ![flora_glowing-skullcandy-headphones-adafruit-12.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/397/medium640/flora_glowing-skullcandy-headphones-adafruit-12.jpg?1396904805) Strip and tin the three wires of your ribbon cable that connects between earphones. ![flora_glowing-skullcandy-headphones-adafruit-11.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/389/medium640/flora_glowing-skullcandy-headphones-adafruit-11.jpg?1396904622) Trim down the spacer posts so they're all the same length. "Dry fit" the ring in the earphone to see if the posts are a good length. You want them to hold the ring away from the outer plastic, but not get in the way of closing the earphones up again. The ring in the same earphone as the FLORA and battery may have to sit a bit closer to the outer plastic of the earphone to allow space for the additional components. ![flora_glowing-skullcandy-headphones-adafruit-09.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/385/medium640/flora_glowing-skullcandy-headphones-adafruit-09.jpg?1396904534) ![flora_glowing-skullcandy-headphones-adafruit-10.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/387/medium640/flora_glowing-skullcandy-headphones-adafruit-10.jpg?1396904565) Run the ribbon wire into the other earphone and solder the power and ground wires to the + and - rings on the LED ring, as before, but solder the data wire to the output pad on the center pixel. Following the [circuit diagram](http://learn.adafruit.com/glowing-skullcandy-headphones-mod/circuit-diagram), solder the ring's inner power bus to VBATT on the FLORA main board. Solder the ring's outer ground bus to any pad marked GND on FLORA. Use tape to stick the ring in position, with FLORA sitting right on top of it. Plug in the charged tiny lipoly and flip the tiny power switch on FLORA to ON. Do all your pixels light up and change color? If so, great! If not, flip it off and check your circuit for shorts or missed connections, and double check your wiring against the [circuit diagram](http://learn.adafruit.com/glowing-skullcandy-headphones-mod/circuit-diagram "Link: http://learn.adafruit.com/glowing-skullcandy-headphones-mod/circuit-diagram"). Now we need a way to turn the circuit on and off from outside the earphones! Insert the leads of the tactile on/off switch through the hold you drilled in the earphone. Make sure FLORA's power switch is set to OFF, and snip one of the battery's wires. ![flora_glowing-skullcandy-headphones-adafruit-16.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/400/medium640/flora_glowing-skullcandy-headphones-adafruit-16.jpg?1396904893) ![flora_glowing-skullcandy-headphones-adafruit-17.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/407/medium640/flora_glowing-skullcandy-headphones-adafruit-17.jpg?1396905025) Info: Strip and tin the leads of the switch and the newly cut battery wire, then pair them up (one switch wire to one battery wire), twist and solder. Use heat shrink tubing to insulate these new solder joints. ![flora_glowing-skullcandy-headphones-adafruit-18.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/408/medium640/flora_glowing-skullcandy-headphones-adafruit-18.jpg?1396905049) ![flora_glowing-skullcandy-headphones-adafruit-19.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/409/medium640/flora_glowing-skullcandy-headphones-adafruit-19.jpg?1396905069) ![flora_glowing-skullcandy-headphones-adafruit-20.jpg](https://cdn-learn.adafruit.com/assets/assets/000/010/410/medium640/flora_glowing-skullcandy-headphones-adafruit-20.jpg?1396905092) ![](https://cdn-learn.adafruit.com/assets/assets/000/010/411/medium800/flora_glowing-skullcandy-headphones-adafruit-21.jpg?1396905119) Set the FLORA's onboard switch to ON, and give your external power switch a click. Your circuit should power up, illuminating the earphones according to the Arduino code. Tuck the wire connections in and use a little tape and/or Sugru to insulate the FLORA board from the headphone input board. If we had to do this project over, we'd swap the contents of each earphone so that the FLORA main board wasn't so crowded. Home stretch! Re-install the speaker/earphone plate with the screws you removed earlier, and put the foam pads back on the headphones. ![](https://cdn-learn.adafruit.com/assets/assets/000/010/416/medium800/flora_glowing-skullcandy-headphones-adafruit-22.jpg?1396905271) # Glowing Skullcandy Headphones Mod ## Wear 'em! ![](https://cdn-learn.adafruit.com/assets/assets/000/010/438/medium800/flora_RisaRose_Skullcandy_LED_Headphones_Rockingout.jpg?1396905826) Enjoy your new glowing headphones! Keep your volume down if you want to hear the compliments you'll get from passers-by. To charge the battery or change the animations, you'll need to re-open the earphone containing the FLORA main board. Make sure your tactile switch is set to ON when charging the battery. ![](https://cdn-learn.adafruit.com/assets/assets/000/010/439/medium800/flora_RisaRose_Skullcandy_LED_Headphones.jpg?1396905870) You can see that there's slightly less diffusion from the earphone containing the bulk of the electronics. If your headphones have a LOT of room inside them, you could add an audio amplifier to the headphone input and make the animations sound-reactive! ## Featured Products ### FLORA - Wearable electronic platform: Arduino-compatible [FLORA - Wearable electronic platform: Arduino-compatible](https://www.adafruit.com/product/659) FLORA is Adafruit's fully-featured wearable electronics platform. It's a round, sewable, Arduino-compatible microcontroller designed to empower amazing wearables projects.FLORA comes with Adafruit's support, [tutorials and...](http://learn.adafruit.com/category/flora) In Stock [Buy Now](https://www.adafruit.com/product/659) [Related Guides to the Product](https://learn.adafruit.com/products/659/guides) ### Flora RGB Smart NeoPixel version 3 - Pack of 4 [Flora RGB Smart NeoPixel version 3 - Pack of 4](https://www.adafruit.com/product/1260) What's a wearable project without LEDs? Our favorite part of the Flora platform is these tiny smart pixels. Designed specifically for wearables, these updated Flora NeoPixels have ultra-cool technology: these ultra-bright LEDs have a constant-current driver cooked right into the LED... In Stock [Buy Now](https://www.adafruit.com/product/1260) [Related Guides to the Product](https://learn.adafruit.com/products/1260/guides) ### Tactile On/Off Switch with Leads [Tactile On/Off Switch with Leads](https://www.adafruit.com/product/1092) Squeeze once to turn on, squeeze again to turn off! This clicky switch makes a great power switch or mode toggler. We like this switch because it's easy to embed in a seam for easily powering up/off wearable and fabric projects. Can handle up to 14V and 2 Amps! This is a really satisfying... In Stock [Buy Now](https://www.adafruit.com/product/1092) [Related Guides to the Product](https://learn.adafruit.com/products/1092/guides) ### Lithium Ion Polymer Battery - 3.7v 150mAh [Lithium Ion Polymer Battery - 3.7v 150mAh](https://www.adafruit.com/product/1317) Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of 150mAh for a total of about 0.6 Wh. If you need a larger battery, Out of Stock [Buy Now](https://www.adafruit.com/product/1317) [Related Guides to the Product](https://learn.adafruit.com/products/1317/guides) ### Adafruit Micro Lipo - USB LiIon/LiPoly charger [Adafruit Micro Lipo - USB LiIon/LiPoly charger](https://www.adafruit.com/product/1304) Oh so adorable, this is the tiniest little lipo charger, so handy you can keep it any project box! Its also easy to use. Simply plug in the gold plated contacts into any USB port and a 3.7V/4.2V lithium polymer or lithium ion rechargeable battery into the JST plug on the other end. There are... Out of Stock [Buy Now](https://www.adafruit.com/product/1304) [Related Guides to the Product](https://learn.adafruit.com/products/1304/guides) ### Fine tip straight tweezers - ESD safe [Fine tip straight tweezers - ESD safe](https://www.adafruit.com/product/421) When soldering small surface-mount (SMD/SMT) components, one thing you'll need is a good pair of tweezers. These tweezers 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... In Stock [Buy Now](https://www.adafruit.com/product/421) [Related Guides to the Product](https://learn.adafruit.com/products/421/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) ### 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... 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