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/*
Arduino Starter Kit example
Project 7 - Keyboard
This sketch is written to accompany Project 7 in the Arduino Starter Kit
Parts required:
- two 10 kilohm resistors
- 1 megohm resistor
- 220 ohm resistor
- four pushbuttons
- piezo
created 13 Sep 2012
by Scott Fitzgerald
https://store.arduino.cc/genuino-starter-kit
This example code is part of the public domain.
*/
// create an array of notes
// the numbers below correspond to the frequencies of middle C, D, E, and F
int notes[] = {262, 294, 330, 349};
void setup() {
//start serial communication
Serial.begin(9600);
}
void loop() {
// create a local variable to hold the input on pin A0
int keyVal = analogRead(A0);
// send the value from A0 to the Serial Monitor
Serial.println(keyVal);
// play the note corresponding to each value on A0
if (keyVal == 1023) {
// play the first frequency in the array on pin 8
tone(8, notes[0]);
} else if (keyVal >= 990 && keyVal <= 1010) {
// play the second frequency in the array on pin 8
tone(8, notes[1]);
} else if (keyVal >= 505 && keyVal <= 515) {
// play the third frequency in the array on pin 8
tone(8, notes[2]);
} else if (keyVal >= 5 && keyVal <= 10) {
// play the fourth frequency in the array on pin 8
tone(8, notes[3]);
} else {
// if the value is out of range, play no tone
noTone(8);
}
}
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