# Sound Reactive NeoPixel Peace Pendant ## Overview https://youtu.be/0NRY9WaExDg?t=6 This Peace pendant project is a great way to hone your 3D printing + electronics skills. The circuitry for this wearable project isn't that complex, and the 3D printed enclosure will provide a compact pendant that you can wear to your next party or event. Info: **Features:** - Sound reactive - Rechargeable - On/Off switch - Programmable Before you begin, please read the following prerequisite guides: - [Adafruit Guide To Excellent Soldering](../../../adafruit-guide-excellent-soldering) - [Battery Powering your Wearable Electronics](https://www.youtube.com/watch?v=U_Q3djsktQs) - [Introducing Gemma](../../../introducing-gemma) or [Introducing Gemma M0](../../../../adafruit-gemma-m0/) **Parts:** - [Gemma M0](https://www.adafruit.com/product/3501) or [Gemma v2](http://www.adafruit.com/products/1222) (M0 type is recommended!) - [NeoPixel Ring (12 LEDs).](https://www.adafruit.com/products/1643) - [Switch.](https://www.adafruit.com/products/805) - [#4 3/8 inch Screws (x2)](http://www.homedepot.com/p/Everbilt-4-x-3-8-in-Zinc-Plated-Phillips-Flat-Head-Wood-Screw-12-per-Pack-806861/204283336) or similar. - [Li-Po battery 3.7V 150mAh.](https://www.adafruit.com/product/1317) - [Lipoly battery charger.](https://www.adafruit.com/products/1904) - [Mic Amp [MAX4466]](https://www.adafruit.com/products/1063) or [Mic Amp [MAX9814] ](https://www.adafruit.com/product/1713)either will work - Necklace and ring. - Micro USB cable for programming/charging. - [22 AWG hook-up wire](https://www.adafruit.com/products/290) or any other suitable wire. **Tools and Supplies:** - Access to a 3D printer with filament. - Soldering Iron with solder. - Wire Strippers and pliers. - Hot glue gun and super glue. ![](https://cdn-learn.adafruit.com/assets/assets/000/029/531/medium800/led_pixels_parts.jpg?1452189127) - [Next Page](https://learn.adafruit.com/sound-reactive-neopixel-peace-pendant/3d-printing.md) ## Featured Products ### Adafruit GEMMA M0 - Miniature wearable electronic platform [Adafruit GEMMA M0 - Miniature wearable electronic platform](https://www.adafruit.com/product/3501) The **Adafruit Gemma M0** is a super small microcontroller board, with just enough built-in to create many simple projects. It may look small and cute: round, about the size of a quarter, with friendly alligator-clip sew pads. But do not be fooled! The Gemma M0 is incredibly... In Stock [Buy Now](https://www.adafruit.com/product/3501) [Related Guides to the Product](https://learn.adafruit.com/products/3501/guides) ### Adafruit GEMMA v2 - Miniature wearable electronic platform [Adafruit GEMMA v2 - Miniature wearable electronic platform](https://www.adafruit.com/product/1222) **Deprecation Warning: The Gemma bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So while we still carry the Gemma so that people can maintain some older projects, we no longer recommend it.** No Longer Stocked [Buy Now](https://www.adafruit.com/product/1222) [Related Guides to the Product](https://learn.adafruit.com/products/1222/guides) ### NeoPixel Ring - 12 x 5050 RGB LED with Integrated Drivers [NeoPixel Ring - 12 x 5050 RGB LED with Integrated Drivers](https://www.adafruit.com/product/1643) Round and round and round they go! 12 ultra bright smart LED NeoPixels are arranged in a circle with 1.5" (37mm) outer diameter. The rings are 'chainable' - connect the output pin of one to the input pin of another. Use only one microcontroller pin to control as many as you can... In Stock [Buy Now](https://www.adafruit.com/product/1643) [Related Guides to the Product](https://learn.adafruit.com/products/1643/guides) ### Adafruit Micro-Lipo Charger for LiPo/LiIon Batt w/MicroUSB Jack [Adafruit Micro-Lipo Charger for LiPo/LiIon Batt w/MicroUSB Jack](https://www.adafruit.com/product/1904) Oh so handy, this little lipo charger is so small and easy to use you can keep it on your desk or mount it easily into any project! Simply plug it via any MicroUSB cable into a USB port and a 3.7V/4.2V lithium polymer or lithium ion rechargeable battery into the JST plug on the other end.... In Stock [Buy Now](https://www.adafruit.com/product/1904) [Related Guides to the Product](https://learn.adafruit.com/products/1904/guides) ### Electret Microphone Amplifier - MAX4466 with Adjustable Gain [Electret Microphone Amplifier - MAX4466 with Adjustable Gain](https://www.adafruit.com/product/1063) Add an ear to your project with this well-designed electret microphone amplifier. This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use the Maxim MAX4466, an op-amp specifically designed for this delicate task! The amplifier... In Stock [Buy Now](https://www.adafruit.com/product/1063) [Related Guides to the Product](https://learn.adafruit.com/products/1063/guides) ### Electret Microphone Amplifier - MAX9814 with Auto Gain Control [Electret Microphone Amplifier - MAX9814 with Auto Gain Control](https://www.adafruit.com/product/1713) Add an ear to your project with this well-designed electret microphone amplifier with AGC. This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use the Maxim MAX9814, a specialty chip that is designed for amplifying electret... In Stock [Buy Now](https://www.adafruit.com/product/1713) [Related Guides to the Product](https://learn.adafruit.com/products/1713/guides) ### Breadboard-friendly SPDT Slide Switch [Breadboard-friendly SPDT Slide Switch](https://www.adafruit.com/product/805) These nice switches are perfect for use with breadboard and perfboard projects. They have 0.1" spacing and snap in nicely into a solderless breadboard. They're easy to switch no matter what size fingers you have, but not so easy that they'll get flipped by accident. Work great as... In Stock [Buy Now](https://www.adafruit.com/product/805) [Related Guides to the Product](https://learn.adafruit.com/products/805/guides) ## Related Guides - [Spy Theme Playback Device](https://learn.adafruit.com/spy-theme-playback-device.md) - [Capacitive Touch Unicorn Horn](https://learn.adafruit.com/capacitive-touch-unicorn-horn.md) - [AdaBox 007](https://learn.adafruit.com/adabox007.md) - [Twinkly Earwarmer Headband](https://learn.adafruit.com/twinkly-ear-warmer.md) - [VU Meter Baseball Hat](https://learn.adafruit.com/vu-meter-baseball-hat.md) - [Princess Peach LED Crown](https://learn.adafruit.com/bowsette.md) - [Ray Gun Blaster](https://learn.adafruit.com/ray-gun-blaster.md) - [Gemma LightTouch](https://learn.adafruit.com/gemma-lighttouch.md) - [Battery Powering Wearable Electronics](https://learn.adafruit.com/battery-powering-wearable-electronics.md) - [NeoPixel Punk Collar](https://learn.adafruit.com/neopixel-punk-collar.md) - [Playa Festival Bike](https://learn.adafruit.com/playa-festival-bike.md) - [Color-sensor Driven NeoPixel Dress](https://learn.adafruit.com/color-sensor-driven-neopixel-dress.md) - [Gemma M0 Sheikah Pendant](https://learn.adafruit.com/gemma-m0-sheikah-pendant.md) - [NeoPixels on Raspberry Pi](https://learn.adafruit.com/neopixels-on-raspberry-pi.md) - [Adafruit Microphone Amplifier Breakout](https://learn.adafruit.com/adafruit-microphone-amplifier-breakout.md)