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/*
keyboard
Plays a pitch that changes based on a changing analog input
circuit:
* 3 force-sensing resistors from +5V to analog in 0 through 5
* 3 10K resistors from analog in 0 through 5 to ground
* 8-ohm speaker on digital pin 8
created 21 Jan 2010
modified 9 Apr 2012
by Tom Igoe
This example code is in the public domain.
http://arduino.cc/en/Tutorial/Tone3
*/
#include "pitches.h"
const int threshold = 10; // minimum reading of the sensors that generates a note
// notes to play, corresponding to the 3 sensors:
int notes[] = {
NOTE_A4, NOTE_B4,NOTE_C3 };
void setup() {
}
void loop() {
for (int thisSensor = 0; thisSensor < 3; thisSensor++) {
// get a sensor reading:
int sensorReading = analogRead(thisSensor);
// if the sensor is pressed hard enough:
if (sensorReading > threshold) {
// play the note corresponding to this sensor:
tone(8, notes[thisSensor], 20);
}
}
}
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