// declare array of input pins connected to tilt sensor petals:
int tiltPetals[] = {
5,6,11,16,18,19};

// declare pin variables:
int analogCorner = 3;
int GNDcorner = 10;
int speakerPin = 9;

// declare storage variables:
int tiltValue;
int cornerValue;

// declare array of notes associated with each tilt petal:
int notes[] = {
NOTE_A1, NOTE_B2, NOTE_C3, NOTE_D4, NOTE_E5, NOTE_F6};

void setup() {
// declare tilt sensor petals pins as digital inputs:
for(int i = 0; i<6; i++){ pinMode(tiltPetals[i], INPUT); digitalWrite(tiltPetals[i], HIGH); // set internal pull-up resistors } // declare analog corner pin as analog input pinMode(analogCorner, INPUT); digitalWrite(17, HIGH); // set internal pull-up resistor (analog pin 3 = digital pin 17) // declare other corner as output and set to be GND: pinMode(GNDcorner, OUTPUT); digitalWrite(GNDcorner, LOW); // declare speaker pin as output: pinMode(speakerPin, OUTPUT); Serial.begin(9600); // begin serial communication for debugging } void loop() { for(int i = 0; i<6; i++){ tiltValue = digitalRead(tiltPetals[i]); Serial.print(tiltValue); // print value to serial monitor for debugging if(tiltValue == 0) { tone(speakerPin, notes[i], 1000); } } Serial.println(); // print a linebreak after each for loop cornerValue = analogRead(analogCorner); if(cornerValue < 1000) { tone(speakerPin, cornerValue, 250); } //Serial.println(cornerValue); // print analog value for debugging delay(10); }