Raspberry pi 使用 blynk fot python

安装pip包管理工具

sudo apt-get install python3-pip

安装Python client for Blynk

pip3 install blynk-library-python

由于使用Blynk本地服务器，需要修改库文件的服务器IP，找出文件路径

#查看pip安装列表，安装路径
pip3 list
pip3 show blynk-library-python

License: MIT
Location: /home/pi/.local/lib/python3.7/site-packages

找到路径，编辑库文件，修改服务器IP、端口

cd /home/pi/.local/lib/python3.7/site-packages
nano BlynkLib.py

import socket

class Blynk(BlynkProtocol):
    def __init__(self, auth, **kwargs):
        self.server = kwargs.pop('server', '192.168.1.30')
        self.port = kwargs.pop('port', 8080)
        BlynkProtocol.__init__(self, auth, **kwargs)

 

试运行例子 python3 1.py，Token在手机app上查看(点击复制)：Devices-AUTH TOKEN

import BlynkLib

# Initialize Blynk
blynk = BlynkLib.Blynk('YourAuthToken')

# Register Virtual Pins
@blynk.VIRTUAL_WRITE(1)
def my_write_handler(value):
    print('Current V1 value: {}'.format(value))

@blynk.VIRTUAL_READ(2)
def my_read_handler():
    # this widget will show some time in seconds..
    blynk.virtual_write(2, int(time.time()))

while True:
    blynk.run()

顺利连接上服务器，手机上显示设备在线。

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