[求助] DHT11温湿度传感器，报错File "dht.py", line 23, in measure

 nodemcu esp8266开发板

使用语言：micro python

问题：DHT11温湿度传感器，执行报错，无法读取温度和湿度：

我是按照这个示例操作的：https://docs.micropython.org/en/latest/esp8266/quickref.html#dht-driver

micro python代码：

import dht
import machine
import utime

d = dht.DHT11(machine.Pin(4))
utime.sleep(2)
d.measure()
print(d.temperature())
d.humidity()

报错：

Traceback (most recent call last):
  File "main.py", line 26, in <module>
  File "dht.py", line 23, in measure
OSError: [Errno 110] ETIMEDOUT