Arduino – Piezo – Switch 2
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int piezo=2; int btnLeft=5; int btnRight=4; int numbers=0; unsigned long cnt=0; int tones[8]={523, 587, 659, 699, 784, 880, 988, 1047}; void setup() { pinMode(btnLeft, INPUT); pinMode(btnRight, INPUT); } void loop() { if (cnt==0 && digitalRead(btnLeft)) { numbers--; cnt=millis(); } else if (cnt==0 && digitalRead(btnRight)) { numbers++; cnt=millis(); } else if (millis() > cnt+300) { cnt=0; } if (numbers<0) { numbers=0; } else if (numbers>7) { numbers=7; } tone(piezo, tones[numbers]); } |