接线说明
从左到右
3.3V-6V 电源
GPIO接口
NO Connected
接地
依赖库
为了简化工作,我们基于Adafruit_Python_DHT的Python库进行实验
Clone下这个依赖库
git clone https://github.com/adafruit/Adafruit_Python_DHT.git
安装依赖库
cd Adafruit_Python_DHT
sudo python setup.py install
cd ..
调用代码
#!/usr/bin/python
import Adafruit_DHT
#两个选一个填写
sensor = Adafruit_DHT.DHT11 #调用DHT11温湿度传感器
sensor = Adafruit_DHT.DHT22 #调用DHT22温湿度传感器
pin = 26 #使用GPIO-26口
humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
if humidity is not None and temperature is not None:
print('Temp={0:0.1f}*C Humidity={1:0.1f}%'.format(temperature, humidity))
else:
print('Failed to get reading. Try again!')
全文完 🙂