Arduino program showing data from DHT11 temperature and humidity sensor on 4-digit display

ArduinoDisplayTemperatureHumidity.ino

#include <DHT.h>

#include <SevSeg.h>

// DHT data wire connected on A0
#define DHTPIN 14
#define DHTTYPE DHT11

SevSeg sevseg;
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  byte numDigits = 4;
  // 4-digit display HS420561K-32 on digital pins 2 to 13
  byte digitPins[] = {2, 3, 4, 5};
  byte segmentPins[] = {6, 7, 8, 9, 10, 11, 12, 13};
  sevseg.begin(COMMON_CATHODE, numDigits, digitPins, segmentPins);
  sevseg.setBrightness(90);
  
  dht.begin();
}

void loop() {
  int h = (int) dht.readHumidity();
  int t = (int) dht.readTemperature();
  
  sevseg.setNumber(h * 100 + t, 2);

  // DHT11 can only be queried every 1s and takes 300ms to return result.
  // Removing for-loop and delay will result in much more blinky display.
  for (int i = 0; i < 300; i++) {
    sevseg.refreshDisplay();
    delay(10);
  }
}