#include <DHT.h>
#include <SevSeg.h>

#define DHTPIN1 27  // pin for first DHT22 sensor
#define DHTPIN2 13  // pin for second DHT22 sensor
#define DHTTYPE DHT22  // type of DHT sensor

DHT dht1(DHTPIN1, DHTTYPE);
DHT dht2(DHTPIN2, DHTTYPE);

SevSeg sevseg;

void setup() {
  sevseg.begin(COMMON_ANODE, 21, 19, 18, 5, 15, 2, 4, 14, 23, 22,12,9); // initialize seven segment display pins
  sevseg.setBrightness(100);  // set display brightness (0-100)

  dht1.begin();  // initialize first DHT22 sensor
  dht2.begin();  // initialize second DHT22 sensor
}

void loop() {
  float t1 = dht1.readTemperature();  // read temperature from first DHT22 sensor
  float t2 = dht2.readTemperature();  // read temperature from second DHT22 sensor
  
  float average = (t1 + t2)/2;   // calculate average temperature
  
  sevseg.setNumber(average, 1);  // display average temperature on seven segment displays
  sevseg.refreshDisplay();  
  delay(1000);  // wait for one second before taking another measurement
}