Arduino – Piezo – Ambulance + Switch 2
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int piezo=2; int btnStart=5, btnStop=4; int ledA=6, ledB=13; int states=0; unsigned long cnt=0; void setup() { pinMode(btnStart, INPUT); pinMode(btnStop, INPUT); pinMode(ledA, OUTPUT); pinMode(ledB, OUTPUT); } void loop() { if (digitalRead(btnStart)) { states=1; } else if (digitalRead(btnStop)) { states=0; cnt=0; noTone(piezo); } if (states) { if (cnt==0) { cnt=millis(); tone(piezo, 1319); digitalWrite(ledA, HIGH); digitalWrite(ledB, LOW); } else if (millis() > cnt+1000) { cnt=0; } else if (millis() > cnt+500) { tone(piezo, 1047); digitalWrite(ledA, LOW); digitalWrite(ledB, HIGH); } } } |