# Circuit Playground Express Head-Tilt Ears
## Overview
This project is a reuse of the project built in the [Circuit Playground Express Perk-up Ears](https://learn.adafruit.com/perk-up-ears) guide. It's a good example of how you can find new and interesting ways to reuse or extend an cool bit of hardware.
So if you built the perk-up ears headband from that guide, charge up the battery, and plug in the USB cable. Otherwise, work thought [that guide](https://learn.adafruit.com/perk-up-ears) to build the servo-ears headband.
## Parts
This project uses a Circuit Playground Express, 2 servos, and a LiPo battery. Any size battery can be used, but the 1200 mAh model is a good balance between size and lifespan.
### Circuit Playground Express
[Circuit Playground Express](https://www.adafruit.com/product/3333)
**Circuit Playground Express** is the next step towards a perfect introduction to electronics and programming. We've taken the original Circuit Playground Classic and made it even better! Not only did we pack even more sensors in, we also made it even easier to...
In Stock
[Buy Now](https://www.adafruit.com/product/3333)
[Related Guides to the Product](https://learn.adafruit.com/products/3333/guides)
### Micro servo
[Micro servo](https://www.adafruit.com/product/169)
Tiny little servo can rotate approximately 180 degrees (90 in each direction) and works just like the standard kinds you're used to but _smaller_. You can use any servo code, hardware, or library to control these servos. Good for beginners who want to make stuff move without...
Out of Stock
[Buy Now](https://www.adafruit.com/product/169)
[Related Guides to the Product](https://learn.adafruit.com/products/169/guides)
### Lithium Ion Polymer Battery - 3.7v 1200mAh
[Lithium Ion Polymer Battery - 3.7v 1200mAh](https://www.adafruit.com/product/258)
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 1200mAh for a total of about 4.5 Wh. If you need a larger battery,
In Stock
[Buy Now](https://www.adafruit.com/product/258)
[Related Guides to the Product](https://learn.adafruit.com/products/258/guides)
## Supplies
- Headband
- Construction paper
- Corrugated cardboard
- Hot glue and glue gun
- 2 rubber bands of an appropriate size
- Felt, faux fur, or fabric as desired to cover the ears
- Jumper wire with male pins if you want to solder to the CPX for a more robust connection
- flexible/stranded wire to use as an actuator
- 4 pieces of stiff wire (long male header pins work well) and wire to mechanically connect the servo
- [Next Page](https://learn.adafruit.com/circuit-playground-express-head-tilt-ears/hardware.md)
## Featured Products
### Circuit Playground Express
[Circuit Playground Express](https://www.adafruit.com/product/3333)
**Circuit Playground Express** is the next step towards a perfect introduction to electronics and programming. We've taken the original Circuit Playground Classic and made it even better! Not only did we pack even more sensors in, we also made it even easier to...
In Stock
[Buy Now](https://www.adafruit.com/product/3333)
[Related Guides to the Product](https://learn.adafruit.com/products/3333/guides)
### Micro servo
[Micro servo](https://www.adafruit.com/product/169)
Tiny little servo can rotate approximately 180 degrees (90 in each direction) and works just like the standard kinds you're used to but _smaller_. You can use any servo code, hardware, or library to control these servos. Good for beginners who want to make stuff move without...
Out of Stock
[Buy Now](https://www.adafruit.com/product/169)
[Related Guides to the Product](https://learn.adafruit.com/products/169/guides)
### Lithium Ion Polymer Battery - 3.7v 1200mAh
[Lithium Ion Polymer Battery - 3.7v 1200mAh](https://www.adafruit.com/product/258)
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 1200mAh for a total of about 4.5 Wh. If you need a larger battery,
In Stock
[Buy Now](https://www.adafruit.com/product/258)
[Related Guides to the Product](https://learn.adafruit.com/products/258/guides)
### Small Alligator Clip to Male Jumper Wire Bundle - 6 Pieces
[Small Alligator Clip to Male Jumper Wire Bundle - 6 Pieces](https://www.adafruit.com/product/3448)
When working with unusual non-header-friendly surfaces, these handy cables will be your best friends! No longer will you have long, cumbersome strands of alligator clips. These compact jumper cables have a premium male header on one end and a grippy mini alligator clip on the...
Out of Stock
[Buy Now](https://www.adafruit.com/product/3448)
[Related Guides to the Product](https://learn.adafruit.com/products/3448/guides)
### Plastic Pop Rivets for Cardboard Crafts (20-pack)
[Plastic Pop Rivets for Cardboard Crafts (20-pack)](https://www.adafruit.com/product/3822)
Enter the world of cardboard construction and build playful robot friends!
Instead of slapping on tape or waiting for your hot glue to warm up, you can use these **Large Plastic Rivets**! So easy to install. Just poke them through the cardboard and fasten with the back...
No Longer Stocked
[Buy Now](https://www.adafruit.com/product/3822)
[Related Guides to the Product](https://learn.adafruit.com/products/3822/guides)
### Circuit Playground Express - Base Kit
[Circuit Playground Express - Base Kit](https://www.adafruit.com/product/3517)
It's the **Circuit Playground Express Base Kit!** It provides the few things you'll need to get started with the new [Circuit Playground Express](https://www.adafruit.com/product/3333). This version of Circuit Playground is super powered, and will...
In Stock
[Buy Now](https://www.adafruit.com/product/3517)
[Related Guides to the Product](https://learn.adafruit.com/products/3517/guides)
### Circuit Playground Express Advanced Pack
[Circuit Playground Express Advanced Pack](https://www.adafruit.com/product/2769)
**Circuit Playground Express** is the next step towards a perfect introduction to electronics and programming. We've taken the original Circuit Playground Classic and made it even better! Not only did we pack even more sensors in, we also made it even easier to program....
In Stock
[Buy Now](https://www.adafruit.com/product/2769)
[Related Guides to the Product](https://learn.adafruit.com/products/2769/guides)
## Related Guides
- [Adafruit Circuit Playground Express](https://learn.adafruit.com/adafruit-circuit-playground-express.md)
- [Scratch 3 Walkthrough and Demo](https://learn.adafruit.com/guide-to-scratch-3.md)
- [Chatty Light-Up Circuit Playground Express Mask](https://learn.adafruit.com/chatty-light-up-cpx-mask.md)
- [Drama Piñata](https://learn.adafruit.com/customizable-reusable-pinata.md)
- [Using Servos With CircuitPython and Arduino](https://learn.adafruit.com/using-servos-with-circuitpython.md)
- [Using EduBlocks with Circuit Playground Express](https://learn.adafruit.com/using-edublocks-with-circuit-playground-express.md)
- [Circuit Playground Slouch Detector](https://learn.adafruit.com/circuit-playground-slouch-detector.md)
- [Circuit Playground Express USB MIDI Controller and Synthesizer](https://learn.adafruit.com/cpx-midi-controller.md)
- [Hacking Ikea Lamps with Circuit Playground Express](https://learn.adafruit.com/hacking-ikea-lamps-with-circuit-playground-express.md)
- [Glowing Slime Lunchbox](https://learn.adafruit.com/glowing-slime-lunchbox.md)
- [MicroBlocks Circuit Playground Express Ornament](https://learn.adafruit.com/microblocks-circuitplayground-express-ornament.md)
- [Paper Craft Zoetrope with Crickit](https://learn.adafruit.com/paper-craft-zoetrope-with-circuit-python.md)
- [Animatronic Hand](https://learn.adafruit.com/animatronic-hands.md)
- [Crawling Animatronic Hand](https://learn.adafruit.com/crawling-hand-with-cpx-and-makecode.md)
- [Motion Gift Box](https://learn.adafruit.com/motion-gift-box.md)
- [Infrared Transmit and Receive on Circuit Playground Express in C++](https://learn.adafruit.com/infrared-transmit-and-receive-on-circuit-playground-express-in-c-plus-plus-2.md)