//example project:
//https://create.arduino.cc/example/builtin/02.Digital%5CtoneKeyboard/toneKeyboard/preview

// this project is not ready, because the resources is not enough.
// missing resources:
// 3 force sensing resistors
// 3 10k ohm resistors

// replacement:
// 100 ohm resistor : 100 resistor
// 8 ohm speaker : wokwi-buzzer
// Arduino Board: wokwi-breadboard

#include "pitches.h"

//minimum reading of the sensors that generates a note
const int threshold = 10; 

// notes to play, corresponding to the 3 sensors:
int notes[] = {
  NOTE_A4, 
  NOTE_B4, 
  NOTE_C3
};

// put your setup code here, to run once:
void setup() {

}

// put your main code here, to run repeatedly:
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);
    }
  }

}