Arduino Code

#include <DS1307.h>

#define relay 6

DS1307 rtc(A4, A5);

bool relayStatus = false;

void setup()
{
  rtc.halt(false);

pinMode(relay, OUTPUT);
pinMode(11, OUTPUT);

  rtc.setSQWRate(SQW_RATE_1);
  rtc.enableSQW(true);

  Serial.begin(9600);
}
bool active = false;
int timer = 0;
void loop()
{
  String time = rtc.getTimeStr(FORMAT_SHORT);

  String hour = "";
  String min = "";

  for(int i = 0;i< time.length(); i++){
   if(time[i] != ':')
   if(hour.length() >= 2)
   min += time[i];
   else
   hour += time[i];
  }

  digitalWrite(11, LOW);

if(!active){
  Serial.println("hour: "+hour+" : min: "+min);
  if(hour == "15" && min == "06"){
  timer = 0;
  active = true;
  }
}else{
  Serial.println("ALIMENTANDO!");
timer ++;
if(timer >= 120){
digitalWrite(relay, HIGH);
active = false;
}else{digitalWrite(relay, LOW);}

}

delay(1000);
}