Home automation using iot. String voice; void setup(){ Serial.begin(9600); pinMode(6,OUTPUT); pinMode(5,OUTPUT);} void loop(){ while(Serial.available()){ delay(3); char c = Serial.read(); voice+=c;} if(voice.length()>0){ Serial.println(voice); if(voice == "turn on light") {digitalWrite(6,HIGH);} else if(voice == "turn off light") {digitalWrite(6,LOW);} else if(voice == "turn on fan") {digitalWrite(5,HIGH);} else if(voice == "turn off fan") {digitalWrite(5,LOW);} else if(voice == "turn on all") {digitalWrite(5,HIGH); digitalWrite(6,HIGH);} else (voice == "turn on all"); {digitalWrite(5,LOW); digitalWrite(6,LOW);} voice = "";}}
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