เขียนโปรแกรม Raspberry Pi 1 (อ่านค่า Temperature Sensor)
Programming the DHT11
I’ll explain how to use both C and Python to get temperature and humidity from the DHT11.
Programming the DHT11 With Python
We’ll be using the Adafruit DHT11 Python library. You can download the library using Git, so if you don’t have Git installed on your Pi already, enter this at the command prompt:
sudo apt-get install git-core
Note: If you get an error installing Git, run sudo apt-get update and try it again.
To install the Adafruit DHT11 library:
1. Enter this at the command prompt to download the library:
git clone https://github.com/adafruit/Adafruit_Python_DHT.git
2. Change directories with:
cd Adafruit_Python_DHT
3. Now enter this:
sudo apt-get install build-essential python-dev
4. Then install the library with:
sudo python setup.py install
Output to an SSH Terminal
This Python program will output the temperature and humidity readings to an SSH terminal:
ต้วอย่างเพิ่มเดิมดูได้จาก
http://www.circuitbasics.com/how-to-set-up-the-dht11-humidity-sensor-on-the-raspberry-pi/
