DHT11/DHT12溫溼度傳感器實驗-micropython

tags: micropython dht11/dht12

基本介紹和實驗參考-https://esp32-blairan.blogspot.com/2021/07/dht11dht12-esp32.html

---

import dht

from machine import Pin

from time import sleep

def measureTemp():

    sensor=dht.DHT11(Pin(4))

    while True:

        try:

            sleep(2)

            sensor.measure()

            t=sensor.temperature()

            t_f=t*(9/5)+32

            h=sensor.humidity()

            print("Temp: {:.1f}.C".format(t))

            print("Temp: {:.1f}.F".format(t_f))

            print("Humidity: {:.1f}".format(h))

        except OSError as o:

            print("Failed to read sensor.")

if __name__ == '__main__':

    measureTemp()

載入dht庫(內建)

import dht

from machine import Pin

from time import sleep

指定DHT11腳位給sensor變數

sensor=dht.DHT11(Pin(4))

給予while()每2秒不斷偵測

sleep(2)

sensor.measure()

攝氏溫度(t)/華氏溫度(t_f)/濕度

其中攝氏轉換華氏的公式:攝氏x(9/5)+32

t=sensor.temperature()

t_f=t*(9/5)+32

h=sensor.humidity()

print("Temp: {:.1f}.C".format(t))

print("Temp: {:.1f}.F".format(t_f))

print("Humidity: {:.1f}".format(h))

結果

=== Temp: 26.0.C

Temp: 78.8.F

Humidity: 27.0

Temp: 26.0.C

Temp: 78.8.F

Humidity: 27.0

Temp: 26.0.C

Temp: 78.8.F

Humidity: 27.0