LightMusicHat

© 2013 by Gottfried Mayer http://www.gma.name

Overview

Arduino project with three LED Strips, each 38 pixels, each with a built-in WS2811 controller chip. Sound input with a ADMP401 microphone connected to a MSGEQ7 equalizer chip for frequency analysis.

Schematic

copied top part of https://hackadaycom.files.wordpress.com/2012/09/discoplanetschematic.png

Hardware

3 x 5050 LED Strips with WS2811 controller chip built in The strips are mounted around a hat, because the strips are removable they are wired in an "S" form
row 2: ==> 76 77 78 . . . 111 112 113
row 1: <== 75 74 73 . . . 40 39 38
row 0: ==> 0 1 2 . . . 35 36 37
scrolling horizontally poses a problem in this configuration because in rows 0 and 2 the index increases, but in row 1 the index decreases.

Prerequisites

Uses FastSPI_LED2 (rc1) for controlling the LEDs https://code.google.com/p/fastspi/downloads/detail?name=FastSPI_LED2.RC1.zip&can=2&q=

Credits

Inspiration from http://www.macetech.com/blog/node/118

Mic/MSGEQ7 schematic and code partially copied and modified from http://hackaday.com/2012/09/11/disco-planet-a-massive-rgbw-led-array-in-a-6-globe/

Ideas for additional effects

(mostly taken from macetech's video)

general effects

• knight rider in random color (or red...)
• "sine" effect