# Trellis Python Library ## Overview Danger: ![](https://cdn-learn.adafruit.com/assets/assets/000/014/246/medium800/adafruit_products_qHF6tXM.jpg?1392267680) [Adafruit Trellis](http://www.adafruit.com/products/1616) is a great system for adding backlit keys to your own projects. Trellis' elastomer keypad acts as both an input and fully addressable LED display. You can even tile multiple Trellises together to form large, captivating displays. Now there's a Python library to control Trellis from any computer with Python and I2C, like the Beaglebone Black or Raspberry Pi. Follow this guide for information on installing and using the [Trellis python library](https://github.com/tdicola/Adafruit_Trellis_Python). - [Next Page](https://learn.adafruit.com/trellis-python-library/beaglebone-black.md) ## Featured Products ### Adafruit Trellis Monochrome Driver PCB for 4x4 Keypad & 3mm LEDs [Adafruit Trellis Monochrome Driver PCB for 4x4 Keypad & 3mm LEDs](https://www.adafruit.com/product/1616) **This item is just for the Trellis driver PCB assembly: LEDs and buttons not included.** Trellis is an open source backlight keypad driver system. It is easy to use, works with any 3mm LEDs and eight tiles can be tiled together on a shared I2C bus. This PCB is... Out of Stock [Buy Now](https://www.adafruit.com/product/1616) [Related Guides to the Product](https://learn.adafruit.com/products/1616/guides) ### Silicone Elastomer 4x4 Button Keypad - for 3mm LEDs [Silicone Elastomer 4x4 Button Keypad - for 3mm LEDs](https://www.adafruit.com/product/1611) So squishy! These silicone elastomer keypads are just waiting for your fingers to press them. Go ahead, squish all you like! (They're durable and easy to clean, just wipe with mild soap and water) These are just like the light up rubber buttons you find on stuff like appliances and tools,... Out of Stock [Buy Now](https://www.adafruit.com/product/1611) [Related Guides to the Product](https://learn.adafruit.com/products/1611/guides) ### BeagleBone Black - Rev B [BeagleBone Black - Rev B](https://www.adafruit.com/product/1278) **[Adafruit is no longer shipping the BeagleBone Black Rev B, it has been replaced with the Rev C as of 5/12/14](https://www.adafruit.com/products/1876) - the Rev C now has 4G flash and also comes with Debian, it also costs slightly more. There are no exchanges or...** No Longer Stocked [Buy Now](https://www.adafruit.com/product/1278) [Related Guides to the Product](https://learn.adafruit.com/products/1278/guides) ### Raspberry Pi Model B 512MB RAM [Raspberry Pi Model B 512MB RAM](https://www.adafruit.com/product/998) Adafruit ships the **Raspberry Pi Model B 512MB RAM** as of 10/18/2012. The Raspberry Pi® is a single-board computer developed in the UK by the Raspberry Pi Foundation with the intention of stimulating the teaching of basic computer science in schools. The Raspberry... No Longer Stocked [Buy Now](https://www.adafruit.com/product/998) [Related Guides to the Product](https://learn.adafruit.com/products/998/guides) ## Related Guides - [NeoTrellis MIDI Feedback Controller](https://learn.adafruit.com/neotrellis-midi-feedback-controller.md) - [Mini UNTZtrument: 3D Printed MIDI Controller](https://learn.adafruit.com/mini-untztrument-3d-printed-midi-controller.md) - [Trellis Feather DSP-G1 Synthesizer](https://learn.adafruit.com/feather-trellis-dsp-g1-synthesizer.md) - [AdaBox 010](https://learn.adafruit.com/adabox010.md) - [Trellis 3D Printed Enclosure](https://learn.adafruit.com/trellis-3d-printed-enclosure.md) - [NeoTrellis Tabletop RPG Soundboard](https://learn.adafruit.com/neotrellis-dungeon-crawl-soundboard.md) - [Introducing Adafruit Trellis ](https://learn.adafruit.com/adafruit-trellis-diy-open-source-led-keypad.md) - [UNTZtrument: a Trellis MIDI Instrument](https://learn.adafruit.com/untztrument-trellis-midi-instrument.md) - [Christmas Soundboard with NeoTrellis M4](https://learn.adafruit.com/xmas-sound-board.md) - [Trellis M4 Expressive MIDI Controller](https://learn.adafruit.com/trellis-m4-midi-keypad-and-tilt-controller.md) - [NeoTrellis M4 Animated Dice Roller](https://learn.adafruit.com/neotrellis-dice.md) - [Wireless NeoPixel Controller](https://learn.adafruit.com/neotrellis-neopixel-controller.md) - [Trellis M4 Audio Filter Visualizer](https://learn.adafruit.com/trellis-m4-audio-visualizer-and-filter.md) - [Star Trek Soundboard with NeoTrellis](https://learn.adafruit.com/star-trek-sound-board-with-neotrellism4.md) - [Read-Only Raspberry Pi](https://learn.adafruit.com/read-only-raspberry-pi.md)