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Mar 21st, 2018
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  1. #define NOTE_C5 523
  2. #define NOTE_D5 587
  3. #define NOTE_E5 659
  4.  
  5. int buzzer = 8;
  6. int key_C = 5;
  7. int key_D = 4;
  8. int key_E = 3;
  9.  
  10. void setup()
  11. {
  12. pinMode(key_C, INPUT);
  13. pinMode(key_D, INPUT);
  14. pinMode(key_E, INPUT);
  15. pinMode(buzzer, OUTPUT);
  16. }
  17. void loop()
  18. {
  19. if (digitalRead(key_C) == HIGH) {
  20. tone(buzzer, NOTE_C5, 100);
  21. }
  22. if (digitalRead(key_D) == HIGH) {
  23. tone(buzzer, NOTE_D5, 100);
  24. }
  25. if (digitalRead(key_E) == HIGH) {
  26. tone(buzzer, NOTE_E5, 100);
  27. }
  28. delay(10);
  29. }
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