#include <SevSeg.h>
SevSeg sevSeg;
uint8_t segValues[10]={0X3f,0X06,0X5B,0X4F,0X66,0X6D,0X7C,0X07,0X7F,0X6F};
const float BETA = 3950;
const int RelayLo=13;
const byte RelayHi=A5;
//const byte buzzer=A1;

void setup() {
 byte segPins[]={2,3,4,5,6,7,8,9}; 
 byte dispPins[]={10,11,12};
 sevSeg.begin(COMMON_CATHODE,3,dispPins,segPins,false,false,false,true);
 pinMode(RelayLo, OUTPUT);
 pinMode(RelayHi, OUTPUT);
 //pinMode(buzzer, OUTPUT);
 }

void loop() {
 int sampleValue=analogRead(A0);
 float celsius = 1 / (log(1 / (1023. / sampleValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
 int temp=int(celsius+0.5);// to round the temperature
 if(temp>=23)
 {
  digitalWrite(RelayLo, HIGH);
  digitalWrite(RelayHi, LOW);
  //tone(buzzer,262,50);
 }
 else
 {
  digitalWrite(RelayLo, LOW);
  digitalWrite(RelayHi, HIGH);
 }
 
 int ones=temp%10;
 int tens=temp/10;
 //int hundreds=celsius/100;
 sevSeg.setSegmentsDigit(1,segValues[ones]);//to 
 sevSeg.setSegmentsDigit(0,segValues[tens]);
 sevSeg.setSegmentsDigit(2,0x63);
 sevSeg.refreshDisplay();
}