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c_cpp
2 years ago
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#include <DHT.h> #define DHTPIN 2 #define DHTTYPE DHT22 #define LED 12 #define buzzer 7 DHT dht(DHTPIN, DHTTYPE); int chk; int hum; int temp; void setup() { // put your setup code here, to run once: Serial.begin(9600); dht.begin(); pinMode(LED, OUTPUT); pinMode(buzzer, OUTPUT); } void loop() { // put your main code here, to run repeatedly: hum=dht.readHumidity(); temp=dht.readTemperature(); Serial.print("Humidity: "); Serial.println(hum); Serial.print("Temperature: "); Serial.println(temp); if(temp>50||temp<-20 || hum>50 || hum<30) { digitalWrite(buzzer,HIGH); digitalWrite(LED,HIGH); delay(1000); digitalWrite(LED,LOW); digitalWrite(buzzer,LOW); delay(1000); } }
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