Overview

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

Adafruit NeoTrellis M4 with Enclosure and Buttons Kit Pack

PRODUCT ID: 4020
So you've got a cool/witty name for your band, a Soundcloud account, a 3D-printed Daft Punk...
$59.95
IN STOCK

USB cable - USB A to Micro-B

PRODUCT ID: 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...
$2.95
IN STOCK

To listen to the sounds, you can choose to use headphones, speakers, or a connection to your own amplifier:

Analog Potentiometer Volume Adjustable TRRS Headset

PRODUCT ID: 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...
$7.50
IN STOCK

USB Powered Speakers

PRODUCT ID: 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...
$9.95
IN STOCK

3.5mm Male/Male Stereo Cable

PRODUCT ID: 2698
Seamlessly transmit high-quality stereo audio with this 3.5mm Male/Male Stereo Cable.  Ideal for "passing the AUX cord,"...
$2.50
IN STOCK
This guide was first published on Feb 13, 2019. It was last updated on Feb 13, 2019. This page (Overview) was last updated on Apr 24, 2019.