Arduino – Piezo + Switch 1 + Variable Resistor
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int piezo=A3; int varRes=A1; int btn=4; int tones[]={262, 294, 330, 349, 392, 440, 494, 523}; int leds[]={6, 7, 8, 9, 10, 11, 12, 13}; int temp=0; void setup() { Serial.begin(9600); pinMode(btn, INPUT); for (int i=0;i<8;i++) { pinMode(leds[i], OUTPUT); } } void loop() { temp=map(analogRead(varRes), 0, 1023, 0, 7); Serial.println(temp); for (int i=0;i<8;i++) { if (i==temp) { digitalWrite(leds[i], HIGH); } else { digitalWrite(leds[i], LOW); } } if (digitalRead(btn)) { tone(piezo, tones[7-temp]); } else { noTone(piezo); } } |