# NeoTrellis M4 Noisy Grains of Sand ## Overview ![](https://cdn-learn.adafruit.com/assets/assets/000/071/003/medium800thumb/led_matrices_gos_simple_tilt.jpg?1549899752) The 'grains of sand' code is a great way to demo any LED matrix with an accelerometer, and the NeoTrellis M4 can make this even more entrancing by adding tactile, tap, and sound interaction as well. This guide will show you how to get this code up and running on the NeoTrellis M4. A walk through the code will show you how you can get started making your own styles of interactions. WARNING: This demo can be addictive - do not loan your NeoTrellis M4 running this demo out to others without being prepared to point them to this article and/or buy/setup one for them yourself! ## Parts Featured ### Adafruit NeoTrellis M4 with Enclosure and Buttons Kit Pack [Adafruit NeoTrellis M4 with Enclosure and Buttons Kit Pack](https://www.adafruit.com/product/4020) So you've got a cool/witty name for your band, a Soundcloud account, [a 3D-printed Daft Punk helmet](https://learn.adafruit.com/3d-printed-daft-punk-helmet-with-bluetooth)... so what could be missing from your road to stardom? The **NeoTrellis M4 Kit...** Out of Stock [Buy Now](https://www.adafruit.com/product/4020) [Related Guides to the Product](https://learn.adafruit.com/products/4020/guides) ![Demo Video of Hands pressing buttons on lit up NeoTrellis M4.](https://cdn-shop.adafruit.com/product-videos/640x480/4020-00.jpg) Featured ### USB cable - USB A to Micro-B [USB cable - USB A to Micro-B](https://www.adafruit.com/product/592) This here is your standard A to micro-B USB cable, for USB 1.1 or 2.0. Perfect for connecting a PC to your Metro, Feather, Raspberry Pi or other dev-board or microcontroller Approximately 3 feet / 1 meter long In Stock [Buy Now](https://www.adafruit.com/product/592) [Related Guides to the Product](https://learn.adafruit.com/products/592/guides) ![USB cable - USB A to Micro-B - 3 foot long](https://cdn-shop.adafruit.com/640x480/592-01.jpg) To listen to the sounds, you can choose to use headphones, speakers, or a connection to your own amplifier: Featured ### USB Powered Speakers [USB Powered Speakers](https://www.adafruit.com/product/1363) Add some extra boom to your audio project with these powered loudspeakers. We sampled half a dozen different models to find ones with a good frequency response, so you'll get quality audio output for music playback. Simply connect the standard 3.5mm stereo plug into your Raspberry Pi model... In Stock [Buy Now](https://www.adafruit.com/product/1363) [Related Guides to the Product](https://learn.adafruit.com/products/1363/guides) ![Two square-ish USB Powered Speakers](https://cdn-shop.adafruit.com/640x480/1363-07.jpg) Featured ### 3.5mm Male/Male Stereo Cable [3.5mm Male/Male Stereo Cable](https://www.adafruit.com/product/2698) Seamlessly transmit high-quality stereo audio with this  **3.5mm Male/Male Stereo Cable. ** Ideal for "passing the AUX cord," or connecting audio devices such as smartphones, tablets, MP3 players, car stereos, portable speakers or any other... Out of Stock [Buy Now](https://www.adafruit.com/product/2698) [Related Guides to the Product](https://learn.adafruit.com/products/2698/guides) ![Black audio cable with 3.5mm audio jacks wrapped like a bow tie.](https://cdn-shop.adafruit.com/640x480/2698-01.jpg) - [Next Page](https://learn.adafruit.com/neotrellism4sand/install-circuitpython.md) ## Guide Products ### Adafruit NeoTrellis M4 with Enclosure and Buttons Kit Pack [Adafruit NeoTrellis M4 with Enclosure and Buttons Kit Pack](https://www.adafruit.com/product/4020) So you've got a cool/witty name for your band, a Soundcloud account, [a 3D-printed Daft Punk helmet](https://learn.adafruit.com/3d-printed-daft-punk-helmet-with-bluetooth)... so what could be missing from your road to stardom? The **NeoTrellis M4 Kit...** Out of Stock [Buy Now](https://www.adafruit.com/product/4020) [Related Guides to the Product](https://learn.adafruit.com/products/4020/guides) ### USB cable - USB A to Micro-B [USB cable - USB A to Micro-B](https://www.adafruit.com/product/592) This here is your standard A to micro-B USB cable, for USB 1.1 or 2.0. Perfect for connecting a PC to your Metro, Feather, Raspberry Pi or other dev-board or microcontroller Approximately 3 feet / 1 meter long In Stock [Buy Now](https://www.adafruit.com/product/592) [Related Guides to the Product](https://learn.adafruit.com/products/592/guides) ### Analog Potentiometer Volume Adjustable TRRS Headset [Analog Potentiometer Volume Adjustable TRRS Headset](https://www.adafruit.com/product/3959) Most modern headphone sets are purely digital - with three volume control buttons in-line with the cable. These headphones are interesting in that they have an _analog_ volume control potentiometer. Perfect for use with electronic projects that don't have volume control, or for... No Longer Stocked [Buy Now](https://www.adafruit.com/product/3959) [Related Guides to the Product](https://learn.adafruit.com/products/3959/guides) ### USB Powered Speakers [USB Powered Speakers](https://www.adafruit.com/product/1363) Add some extra boom to your audio project with these powered loudspeakers. We sampled half a dozen different models to find ones with a good frequency response, so you'll get quality audio output for music playback. Simply connect the standard 3.5mm stereo plug into your Raspberry Pi model... In Stock [Buy Now](https://www.adafruit.com/product/1363) [Related Guides to the Product](https://learn.adafruit.com/products/1363/guides) ### 3.5mm Male/Male Stereo Cable [3.5mm Male/Male Stereo Cable](https://www.adafruit.com/product/2698) Seamlessly transmit high-quality stereo audio with this  **3.5mm Male/Male Stereo Cable. ** Ideal for "passing the AUX cord," or connecting audio devices such as smartphones, tablets, MP3 players, car stereos, portable speakers or any other... Out of Stock [Buy Now](https://www.adafruit.com/product/2698) [Related Guides to the Product](https://learn.adafruit.com/products/2698/guides) ## Related Guides - [CLUE Rock, Paper, Scissors Game using Bluetooth](https://learn.adafruit.com/rock-paper-scissors-circuitpython.md) - [Adabot Operation Game](https://learn.adafruit.com/adabot-operation-game.md) - [Paper Craft Zoetrope with Crickit](https://learn.adafruit.com/paper-craft-zoetrope-with-circuit-python.md) - [What is Web MIDI & BLE MIDI?](https://learn.adafruit.com/web-ble-midi.md) - [PyLeap BLE Controlled NeoPixels with CLUE](https://learn.adafruit.com/pyleap-ble-controlled-neopixels-with-clue.md) - [Trellis M4 Audio Filter Visualizer](https://learn.adafruit.com/trellis-m4-audio-visualizer-and-filter.md) - [PyPortal IoT Weather Station](https://learn.adafruit.com/pyportal-iot-weather-station.md) - [CircuitPython BLE Crickit Rover](https://learn.adafruit.com/circuitpython-ble-crickit-rover.md) - [Your Very First Circuit Sculpture](https://learn.adafruit.com/first-simple-circuit-sculpture.md) - [Lucky Cat with Circuit Playground Express](https://learn.adafruit.com/lucky-cat-with-circuit-playground-express.md) - [PyPortal Event Count-Up Clock](https://learn.adafruit.com/pyportal-event-count-up-clock.md) - [Sound Reactive Rapunzel Hair](https://learn.adafruit.com/sound-reactive-rapunzel-hair.md) - [Quickstart - Raspberry Pi RP2040 with BLE and CircuitPython](https://learn.adafruit.com/quickstart-raspberry-pi-rp2040-with-ble-and-circuitpython.md) - [Tappy Robotic Hand](https://learn.adafruit.com/robotic-tapping-hand-with-cpx.md) - [CLUE Text Telephone Transmitter](https://learn.adafruit.com/clue-teletype-transmitter.md)