# Infinity Mirror Collar
## Overview
An infinity mirror displays endless reproductions of whatever sits between its two reflective surfaces. This wearable design puts a twist on the typical infinity mirror project. By using holographic vinyl as the reflective material and EVA foam as a base, we are able to form the flexible materials into a circular collar, creating an appealing statement necklace.
The two Side Light NeoPixel strips nestled between the vinyl layers produce colorful, dynamic patterns multiplied many times over in the resulting reflections. Controlled with CircuitPython code running on an ItsyBitsy nrf52840 Express, this unique wearable accessory lets you choose custom colors and animation patterns on the go with the Bluefruit phone app interface.
## Parts List
### Adafruit ItsyBitsy nRF52840 Express - Bluetooth® LE
[Adafruit ItsyBitsy nRF52840 Express - Bluetooth® LE](https://www.adafruit.com/product/4481)
What's smaller than a Feather but larger than a Trinket? It's an **Adafruit ItsyBitsy nRF52840 Express** featuring the **Nordic nRF52840 Bluetooth® LE** processor! Teensy & powerful, with an fast nRF52840 Cortex M4 processor running at 64 MHz and 1 MB...
In Stock
[Buy Now](https://www.adafruit.com/product/4481)
[Related Guides to the Product](https://learn.adafruit.com/products/4481/guides)
### Adafruit NeoPixel LED Side Light Strip - Black 60 LED
[Adafruit NeoPixel LED Side Light Strip - Black 60 LED](https://www.adafruit.com/product/3636)
Fancy new _side light_ LED strips are a great alternative for folks who have loved and used Adafruit LED strips for a few years but want gorgeous, glowy light emitting at 90 degrees. They're very skinny so you can run them along a thin edge and curve them around shapes and...
Out of Stock
[Buy Now](https://www.adafruit.com/product/3636)
[Related Guides to the Product](https://learn.adafruit.com/products/3636/guides)
### Adafruit LiIon/LiPoly Backpack Add-On for Pro Trinket/ItsyBitsy
[Adafruit LiIon/LiPoly Backpack Add-On for Pro Trinket/ItsyBitsy](https://www.adafruit.com/product/2124)
If you have an ItsyBitsy or Pro Trinket you probably know it's the perfect little size for a portable project. This LiPoly backpack makes it really easy to do! Instead of wiring 2 or 3 boards together to make a charging system, this little PCB sits on top of the PCB and allows a...
In Stock
[Buy Now](https://www.adafruit.com/product/2124)
[Related Guides to the Product](https://learn.adafruit.com/products/2124/guides)
### Lithium Ion Polymer Battery - 3.7v 500mAh
[Lithium Ion Polymer Battery - 3.7v 500mAh](https://www.adafruit.com/product/1578)
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 500mAh for a total of about 1.9 Wh. If you need a larger (or smaller!) battery,
Out of Stock
[Buy Now](https://www.adafruit.com/product/1578)
[Related Guides to the Product](https://learn.adafruit.com/products/1578/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)
## Additional Parts/Materials:
- Transparent holographic vinyl, like [this roll from Amazon](https://www.amazon.com/11-8x54-3inch-Iridescent-Transparent-Symphony-Water-Proof/dp/B07QFHN2XD) that is partially reflective and approximately 4 mil (0.4 mm) thick. Not all holographic vinyl is transparent so check the description carefully before purchasing.
- One sheet of black, 2mm thick EVA foam with adhesive backing that is 12" wide or wider. Etsy vendors such as [this one](https://www.etsy.com/listing/741185737/sticky-back-2mm-set-of-3-pcs-sized-12x18) can be a good source for EVA foam sheets.
- Double-sided clear adhesive tape that either comes in a 1/8" roll or in a sheet that can be cut to size. This [clear craft tape](https://www.amazon.com/iCraft-SuperTape-Permanent-Double-sided-Adhesive/dp/B0018N6KOI/ref=sr_1_7) works well
- A 6" length of black, 1/2" wide self-adhesive Velcro (hook and loop) strip, like [this one](https://www.amazon.com/VELCRO-Brand-Sticky-Fabrics-sewing/dp/B00N0W89Z8)
- Painters' tape or other low-tack, easily removable masking tape
- Electrical tape
- A sturdy cylindrical base, such as large aluminum can, to build the collar around
- Optional but helpful: a good glue for sticking EVA foam to itself, such as [Gorilla Clear Glue](https://www.amazon.com/gp/product/B074J7XQZT)
- Hookup wire
- Shrink tube
## Tools:
- Soldering iron/solder
- Wire cutter/stripper
- Scissors
- Pen
- Printer and printer paper
- Craft knife
- Cutting mat or surface
- Ruler/straightedge
- [Next Page](https://learn.adafruit.com/infinity-mirror-collar/assemble-the-electronics.md)
## Featured Products
### Adafruit ItsyBitsy nRF52840 Express - Bluetooth® LE
[Adafruit ItsyBitsy nRF52840 Express - Bluetooth® LE](https://www.adafruit.com/product/4481)
What's smaller than a Feather but larger than a Trinket? It's an **Adafruit ItsyBitsy nRF52840 Express** featuring the **Nordic nRF52840 Bluetooth® LE** processor! Teensy & powerful, with an fast nRF52840 Cortex M4 processor running at 64 MHz and 1 MB...
In Stock
[Buy Now](https://www.adafruit.com/product/4481)
[Related Guides to the Product](https://learn.adafruit.com/products/4481/guides)
### Adafruit NeoPixel LED Side Light Strip - Black 60 LED
[Adafruit NeoPixel LED Side Light Strip - Black 60 LED](https://www.adafruit.com/product/3636)
Fancy new _side light_ LED strips are a great alternative for folks who have loved and used Adafruit LED strips for a few years but want gorgeous, glowy light emitting at 90 degrees. They're very skinny so you can run them along a thin edge and curve them around shapes and...
Out of Stock
[Buy Now](https://www.adafruit.com/product/3636)
[Related Guides to the Product](https://learn.adafruit.com/products/3636/guides)
### Lithium Ion Polymer Battery - 3.7v 500mAh
[Lithium Ion Polymer Battery - 3.7v 500mAh](https://www.adafruit.com/product/1578)
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 500mAh for a total of about 1.9 Wh. If you need a larger (or smaller!) battery,
Out of Stock
[Buy Now](https://www.adafruit.com/product/1578)
[Related Guides to the Product](https://learn.adafruit.com/products/1578/guides)
### Adafruit LiIon/LiPoly Backpack Add-On for Pro Trinket/ItsyBitsy
[Adafruit LiIon/LiPoly Backpack Add-On for Pro Trinket/ItsyBitsy](https://www.adafruit.com/product/2124)
If you have an ItsyBitsy or Pro Trinket you probably know it's the perfect little size for a portable project. This LiPoly backpack makes it really easy to do! Instead of wiring 2 or 3 boards together to make a charging system, this little PCB sits on top of the PCB and allows a...
In Stock
[Buy Now](https://www.adafruit.com/product/2124)
[Related Guides to the Product](https://learn.adafruit.com/products/2124/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
- [Adafruit ItsyBitsy nRF52840 Express](https://learn.adafruit.com/adafruit-itsybitsy-nrf52840-express.md)
- [Rezz-Inspired NeoPixel Glasses](https://learn.adafruit.com/rezz-inspired-neopixel-glasses.md)
- [Animated Flying Toaster OLED Jewelry](https://learn.adafruit.com/animated-flying-toaster-oled-jewelry.md)
- [Morning Star POV Double Staffs](https://learn.adafruit.com/pov-dotstar-double-staff.md)
- [Zelda Guardian Robot Terrako Companion](https://learn.adafruit.com/terrako.md)
- [Color Balancing Video Camera Light feat. DotStars](https://learn.adafruit.com/color-balancing-light-box-with-dotstar-cool-warm-white-leds.md)
- [NeoPixel LED Necklace Insert with USB Charging](https://learn.adafruit.com/neopixel-led-necklace-insert-with-usb-charging.md)
- [Introducing Bluefruit LE Micro](https://learn.adafruit.com/bluefruit-le-micro-atmega32u4-microcontroller-usb-bluetooth-le-in-one.md)
- [Introducing Pro Trinket](https://learn.adafruit.com/introducing-pro-trinket.md)
- [MASLOW: an Open WiFi Detector with Adafruit Pro Trinket and CC3000](https://learn.adafruit.com/wifi-hotspot-finder-adafruit-pro-trinket-cc3000.md)
- [LED Campfire](https://learn.adafruit.com/led-campfire.md)
- [Fiber Optic Whip](https://learn.adafruit.com/fiber-optic-whip.md)
- [NeoPixel Infinity Mirror Coaster](https://learn.adafruit.com/infinity-mirror-coaster.md)
- [CircuitPython BLE Advertising Beacons](https://learn.adafruit.com/circuitpython-ble-advertising-beacons.md)
- [NeXT Bus Mouse to USB HID with CircuitPython](https://learn.adafruit.com/next-bus-mouse-to-usb-hid-with-circuitpython.md)