touch_mp3_with_leds's Introduction

Bare Conductive Touch MP3 and LED Demo Code

Touch-to-MP3 code including a separate pin for each electrode / track which goes high while that track is playing. That pin can be used to drive a LED by connecting the anode (positive leg of the LED) to the relevant pin and the cathode (negative leg) to ground. A larger load (LED strip, motor etc.) can be driven with an appropriate transistor driver circuit.

Written for the Bare Conductive Touch Board.

The mapping between electrodes and the pins which go high in response is:

E0 - D0
E1 - D1
E2 - D10
E3 - D11
E4 - D12
E5 - D13 (which has an onboard LED connected to it)
E6 - A0 (analogue inputs can be used as digital outputs too)
E7 - A1
E8 - A2
E9 - A3
E10 - A4
E11 - A5

You need twelve MP3 files named TRACK000.mp3 to TRACK011.mp3 in the root of the microSD card.

When you touch electrode E0, TRACK000.mp3 will play. When you touch electrode E1, TRACK001.mp3 will play, and so on.

SD card    
│
  TRACK000.mp3  
  TRACK001.mp3  
  TRACK002.mp3  
  TRACK003.mp3  
  TRACK004.mp3  
  TRACK005.mp3  
  TRACK006.mp3  
  TRACK007.mp3  
  TRACK008.mp3  
  TRACK009.mp3  
  TRACK010.mp3  
  TRACK011.mp3

Requirements

You should make sure that you have followed our Setting up Arduino with your Touch Board tutorial before using this (or any other) of our code examples

Install

Close the Arduino IDE if you have it open.
Download the .zip or clone the repository to your local machine - if downloading the .zip, extract the contents somewhere that suits you.
Take the touch_mp3_with_leds folder and move it to Arduino Sketchbook Folder. This will be different for each operating system:

Windows

Libraries\Documents\Arduino

or

My Documents\Arduino

Mac

Documents/Arduino

Linux (Ubuntu)

Home/Arduino

If this folder does not exist, create it first.
Reopen the Arduino IDE - you should now be able to open the sketch in the File -> Sketchbook menu.

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