//DESIGN BY E.LAB. , FUTURE CITY INNOVATION LABRATORY

//Arduino UNO + RTC DS-3231 + LM393 Sound Detection Sensor + 5V One Channel Relay Module

//download rtclib by adafruit from Manage Library under Tools menu

#include “RTClib.h” 

const int relayPin = 10;

const int soundPin = 7;

RTC_DS3231 rtc;

int soundVal = 0;

int lightON = 0;//light status

void setup ()

{

Serial.begin(9600);

pinMode(relayPin, OUTPUT);

pinMode(soundPin, INPUT);

digitalWrite(relayPin, LOW);

if (! rtc.begin()) 

{

Serial.println(“Couldn’t find RTC”);

while (1);

}

if (rtc.lostPower()) 

{

Serial.println(“RTC lost power, lets set the time!”);

rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

}

}

void loop ()

{

DateTime now = rtc.now();

soundVal = digitalRead(soundPin);

if( 8<=now.hour() and now.hour()<18 )

{

if (soundVal == LOW)

{

digitalWrite(relayPin, LOW);

}

else

{

digitalWrite(relayPin, HIGH);

delay(1000);

}

}

else

{

digitalWrite(relayPin, LOW);

}

}