ESP32-WROOM-32とDHT11温度および湿度センサー測定モジュール

外見

ピン説明

1.VDD(3.3~5.5v DC)
2.DATA
3.GND

性能

1.湿度の測定範囲：20~90% rh
2.湿度測定の精度：±5% rh
3.温度測定範囲：0~50℃
4.温度測定の精度：±2℃
5.動作電圧：3.3~5.5V DC

開発環境

・Visual Studio Code(ver 1.69.2)
・PlatformIO(Core 6.1.1 home 3.4.2)
　[追加ライブラリ]DHT sensor library

ソースコード(ほぼサンプルコードのまま)

・使用するピン
　32:DATA

#include <Arduino.h>
#include <DHT.h>

#define DHT11_DATA_PIN 32

DHT dht(DHT11_DATA_PIN, DHT11);

void setup() {
  Serial.begin(115200);
  Serial.println(F("DHTxx test!"));

  dht.begin();
}

void loop() {
  // Wait a few seconds between measurements.
  delay(2000);

  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  // Read temperature as Fahrenheit (isFahrenheit = true)
  float f = dht.readTemperature(true);

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  // Compute heat index in Fahrenheit (the default)
  float hif = dht.computeHeatIndex(f, h);
  // Compute heat index in Celsius (isFahreheit = false)
  float hic = dht.computeHeatIndex(t, h, false);

  Serial.print(F("Humidity: "));
  Serial.print(h);
  Serial.print(F("%  Temperature: "));
  Serial.print(t);
  Serial.print(F("°C "));
  Serial.print(f);
  Serial.print(F("°F  Heat index: "));
  Serial.print(hic);
  Serial.print(F("°C "));
  Serial.print(hif);
  Serial.println(F("°F"));
}