# LED Trinket Tree Topper ## 3D Printing # What your Christmas tree needs this year is a Trinket-LED animated Moravian Star! Moravian Stars come in various sizes and number of facets... the most common is the 26-point form which is composed of eighteen square and eight triangular shaped points. The star featured here is an adaption, using one of the points / facets to mount the star atop a tree. ![](https://cdn-learn.adafruit.com/assets/assets/000/012/620/medium800/trinket_IMG_0449.jpg?1386049186) The shape is technically known as an Augmented Rhombicuboctahedron. Say that ten times fast... If you favor durability, print-up your parts as-is with your favorite transparent or semi-transparent filament. If you want something lighter, you can go with one layer + zero in-fill. [3D Models (.stl files)](http://learn.adafruit.com/system/assets/assets/000/012/621/original/MoravianStar.zip) # LED Trinket Tree Topper ## Assembly I'm big into RC aircraft and ran into Ultimate RC Foam Glue a long time ago... it's awesome stuff. Until it was discontinued that is (major sad). A friend of mine suggested Beacon 3-in-1; it turns out that it has many of the desirable characteristics of URCFG. ![](https://cdn-learn.adafruit.com/assets/assets/000/012/623/medium800/trinket_IMG_8911.jpg?1386050245) It comes out like normal glue. ![](https://cdn-learn.adafruit.com/assets/assets/000/012/626/medium800/trinket_IMG_8903.jpg?1386050279) It can get a little stringy during application - make sure that you cover your entire surface with a thin coat. ![](https://cdn-learn.adafruit.com/assets/assets/000/012/627/medium800/trinket_IMG_8904.jpg?1386050306) Here's the trick in application. Press the two parts together lightly, then pull them apart two to three times - until you can feel the adhesive resist being pulled apart. You may need to blow gently on the glue a bit to help things along. Now, press the parts firmly together; you can make small adjustments for some time after. ![](https://cdn-learn.adafruit.com/assets/assets/000/012/628/medium800/trinket_IMG_8906.jpg?1386050329) Glue a few segments at a time, leaving them to dry / cure for at least an hour between. The final result will be strong but slightly flexible. ![](https://cdn-learn.adafruit.com/assets/assets/000/012/629/medium800/trinket_IMG_8909.jpg?1386050351) # LED Trinket Tree Topper ## Electronics This is what I used to mount the Neo Pixel Rings inside the star... ![](https://cdn-learn.adafruit.com/assets/assets/000/012/630/medium800/trinket_IMG_8926.jpg?1386050403) [3D Model (.stl file)](http://learn.adafruit.com/system/assets/assets/000/012/636/original/NeoPixel_Ring16_Mounting_Post.stl?1386052911) The two rings fit back-to-back with a Trinket in the middle ([here's a refresher on how to wire-up your NeoPixel Rings](http://learn.adafruit.com/kaleidoscope-eyes-neopixel-led-goggles-trinket-gemma "Link: http://learn.adafruit.com/kaleidoscope-eyes-neopixel-led-goggles-trinket-gemma")). ![](https://cdn-learn.adafruit.com/assets/assets/000/012/631/medium800/trinket_IMG_8927.jpg?1386050434) USB port pointing up for easy access... ![](https://cdn-learn.adafruit.com/assets/assets/000/012/632/medium800/trinket_IMG_8928.jpg?1386050467) The LED rings will get a little warm... we need to let the star 'breathe' a bit. Either drill or melt vent holes in the top and bottom of the star. ![](https://cdn-learn.adafruit.com/assets/assets/000/012/633/medium800/trinket_IMG_8931.jpg?1386050487) Pass your power leads through one of your vent holes on the bottom and terminate with your female DC power adapter. ![](https://cdn-learn.adafruit.com/assets/assets/000/012/634/medium800/trinket_IMG_8932.jpg?1386050525) What about the code? Really... the rainbow animation in the Neo Pixel strandtest example is beautiful. If you prefer [something else](http://learn.adafruit.com/adafruit-neopixel-uberguide/overview), those examples provide a great base to work with. # LED Trinket Tree Topper ## Decorate! When you're done... slap that thing on the top of your tree and enjoy! ![](https://cdn-learn.adafruit.com/assets/assets/000/012/635/medium800/trinket_IMG_8934.jpg?1386050740) ## Featured Products ### MakerBot Adafruit Edition [MakerBot Adafruit Edition](https://www.adafruit.com/product/1292) [Please see our post](https://www.adafruit.com/blog/2013/11/27/breaking-news-stratasys-sues-afinia-ramifications-for-the-desktop-3d-printing-industry/) - Is Adafruit going to continue to sell Stratasys/MakerBot products and use their services? **We do not know yet.**... No Longer Stocked [Buy Now](https://www.adafruit.com/product/1292) [Related Guides to the Product](https://learn.adafruit.com/products/1292/guides) ### Adafruit Trinket - Mini Microcontroller - 5V Logic [Adafruit Trinket - Mini Microcontroller - 5V Logic](https://www.adafruit.com/product/1501) **Deprecation Warning: The Trinket 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 Trinket so that people can maintain some older projects, we no longer recommend it.** In Stock [Buy Now](https://www.adafruit.com/product/1501) [Related Guides to the Product](https://learn.adafruit.com/products/1501/guides) ### NeoPixel Ring - 16 x 5050 RGB LED with Integrated Drivers [NeoPixel Ring - 16 x 5050 RGB LED with Integrated Drivers](https://www.adafruit.com/product/1463) Round and round and round they go! 16 ultra bright smart LED NeoPixels are arranged in a circle with 1.75" (44.5mm) 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/1463) [Related Guides to the Product](https://learn.adafruit.com/products/1463/guides) ### Female DC Power adapter - 2.1mm jack to screw terminal block [Female DC Power adapter - 2.1mm jack to screw terminal block](https://www.adafruit.com/product/368) If you need to connect a DC power wall wart to a board that doesn't have a DC jack - this adapter will come in very handy! There is a 2.1mm DC jack on one end, and a screw terminal block on the other. The terminals are labeled with positive/negative assuming a positive-tip configuration... In Stock [Buy Now](https://www.adafruit.com/product/368) [Related Guides to the Product](https://learn.adafruit.com/products/368/guides) ### 5V 2A (2000mA) switching power supply - UL Listed [5V 2A (2000mA) switching power supply - UL Listed](https://www.adafruit.com/product/276) This is an FCC/CE certified and UL listed power supply. Need a lot of 5V power? This switching supply gives a clean regulated 5V output at up to 2000mA. 110 or 240 input, so it works in any country. The plugs are "US 2-prong" style so you may need a plug adapter, but you can pick one... In Stock [Buy Now](https://www.adafruit.com/product/276) [Related Guides to the Product](https://learn.adafruit.com/products/276/guides) ## Related Guides - [Tap Tempo Trinket](https://learn.adafruit.com/tap-tempo-trinket.md) - [Kaleidoscope Eyes (Trinket-Powered NeoPixel LED Ring Goggles)](https://learn.adafruit.com/kaleidoscope-eyes-neopixel-led-goggles-trinket-gemma.md) - [3D Printed NeoPixel LED Gas Mask](https://learn.adafruit.com/3d-printed-el-wire-laser-neopixel-led-gas-mask.md) - [NeoPixel Arcade Buttons](https://learn.adafruit.com/neopixel-arcade-button.md) - [Halo Energy Sword by Mattel NeoPixel Upgrade](https://learn.adafruit.com/halo-energy-sword-by-mattel-neopixel-upgrade.md) - [2014 Halloween 3D Printed Projects Roundup](https://learn.adafruit.com/2014-halloween-3d-printed-projects-roundup.md) - [3D Printed Flora Band](https://learn.adafruit.com/3d-printed-flora-band.md) - [Trinket Classic USB Foot Switch](https://learn.adafruit.com/usb-foot-switch.md) - [Free-Wired 3x3x3 NeoPixel Cube](https://learn.adafruit.com/free-wire-3x3x3-neopixel-cube.md) - [Starduino: 8-Bit Super Mario Tree Topper](https://learn.adafruit.com/starduino-neopixel-8-bit-mario-star-tree-topper.md) - [FLORA NeoGeo Watch](https://learn.adafruit.com/flora-geo-watch.md) - [NeoPixel 60 Ring Wall Clock](https://learn.adafruit.com/neopixel-60-ring-clock.md) - [Larson Scanner Shades (Trinket-Powered NeoPixel LED Strip Glasses)](https://learn.adafruit.com/larson-scanner-shades.md) - [Trinket Ultrasonic Rangefinder](https://learn.adafruit.com/trinket-ultrasonic-rangefinder.md) - [NeoPixel Bracelet](https://learn.adafruit.com/neopixel-bracelet.md)