garethfoote

/* 
 * Sound - Using a pressure sensor to change the tone of a piezo speaker.
 * @author Gareth Foote & Berit Greinke
 * 12th November 2015
 * 
 * Code adapted from here:
 * https://learn.adafruit.com/trinket-gemma-mini-theramin-music-maker/code
 * 
 * Note: The Arduino tone library does not work for the ATTiny85 on the
 * Trinket and Gemma.  The beep function below is similar.  The beep code

garethfoote

/* 
 * Fade - Using a pressure sensor to fade an LED on.
 * @author Gareth Foote & Berit Greinke
 * 12th November 2015
 */
 
int sensorPin = 1;    // The number of the input pin for the pressure sensor
int ledPin = 0;       // The number of the output pin for the LED

void setup() {

garethfoote

int buttonPin = 2;      // The number of the input pin for the button
int ledPin =  1;        // The number of the output pin for the LED

int buttonState = 0;    // variable for reading the pushbutton status

void setup() {
  // Tell the Gemma that the LED pin is an output
  pinMode(ledPin, OUTPUT);
  // Tell the Gemma that the pushbutton pin Is an input
  pinMode(buttonPin, INPUT);

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/*
  playMelody
  Appropriated from Tom Igoe's example here:  
  from http://arduinno.cc/en/Tutorial/Tone
 
  Update by Gareth Foote for Arduino Projects and Workshop.
  
  @description
  This currently creates an increasingly high pitched tone
  using a piezo element.