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