아두이노 우노+WIFI D1 R1 보드(ESP8266)

아두이노 고정밀 온습도 온도 습도 센서 DHT-22 모듈 / DHT22 

를 사용하여 아래 예제를 실행했는데

https://eduino.kr/product/detail.html?product_no=285&cate_no=27

#include <DHT.h>

#include "DHT.h"

#define DHTPIN 2        // SDA 핀의 설정

#define DHTTYPE DHT22   // DHT22 (AM2302) 센서종류 설정

DHT dht(DHTPIN, DHTTYPE);

void setup() {

  Serial.begin(9600); 

  dht.begin();

}

void loop() {

  // 센서의 온도와 습도를 읽어온다.

  float h = dht.readHumidity();

  float t = dht.readTemperature();

  if (isnan(t) || isnan(h)) {

    //값 읽기 실패시 시리얼 모니터 출력

    Serial.println("Failed to read from DHT");

  } else {

    //온도, 습도 표시 시리얼 모니터 출력

    Serial.print("Humidity: "); 

    Serial.print(h);

    Serial.print(" %t");

    Serial.print("Temperature: "); 

    Serial.print(t);

    Serial.println(" *C");

  }

  delay(2000);

}

업로드는 잘되는데

Executable segment sizes:

ICACHE : 32768           - flash instruction cache 

IROM   : 238148          - code in flash         (default or ICACHE_FLASH_ATTR) 

IRAM   : 27337   / 32768 - code in IRAM          (IRAM_ATTR, ISRs...) 

DATA   : 1496  )         - initialized variables (global, static) in RAM/HEAP 

RODATA : 940   ) / 81920 - constants             (global, static) in RAM/HEAP 

BSS    : 25696 )         - zeroed variables      (global, static) in RAM/HEAP 

스케치는 프로그램 저장 공간 267921 바이트(25%)를 사용. 최대 1044464 바이트.

전역 변수는 동적 메모리 28132바이트(34%)를 사용, 53788바이트의 지역변수가 남음.  최대는 81920 바이트. 

esptool.py v3.0

Serial port COM3

Connecting....

Chip is ESP8266EX

Features: WiFi

Crystal is 26MHz

MAC: bc:ff:4d:18:bc:59

Uploading stub...

Running stub...

Stub running...

Configuring flash size...

Auto-detected Flash size: 4MB

Compressed 272080 bytes to 199728...

Writing at 0x00000000... (7 %)

Writing at 0x00004000... (15 %)

Writing at 0x00008000... (23 %)

Writing at 0x0000c000... (30 %)

Writing at 0x00010000... (38 %)

Writing at 0x00014000... (46 %)

Writing at 0x00018000... (53 %)

Writing at 0x0001c000... (61 %)

Writing at 0x00020000... (69 %)

Writing at 0x00024000... (76 %)

Writing at 0x00028000... (84 %)

Writing at 0x0002c000... (92 %)

Writing at 0x00030000... (100 %)

Wrote 272080 bytes (199728 compressed) at 0x00000000 in 17.6 seconds (effective 123.9 kbit/s)...

Hash of data verified.

Leaving...

Hard resetting via RTS pin...

실행 결과가 오류가 뜹니다.

16:07:43.149 -> Failed to read from DHT

16:07:45.410 -> Failed to read from DHT

16:07:47.702 -> Failed to read from DHT

16:07:49.944 -> Failed to read from DHT

16:07:52.243 -> Failed to read from DHT

16:07:54.502 -> Failed to read from DHT

16:07:56.764 -> Failed to read from DHT

16:07:59.058 -> Failed to read from DHT

16:08:01.299 -> Failed to read from DHT

16:08:03.597 -> Failed to read from DHT

16:08:05.853 -> Failed to read from DHT

16:08:08.100 -> Failed to read from DHT

16:08:10.391 -> Failed to read from DHT

첨부파일과 같이 장착한 상태이고요 왜 온습도계를 인식하지 못하는 것인가요 정상출력할 수 있게 도움을 부탁 드립니다.