learning python with raspberry pi pdf

Realize the WiFi disconnection automatically, the principle is to use Python to monitor whether the network is disconnected, if the disconnection will restart the network service. Next to everyone to share the implementation of code, need to refer to the friend 1.Python code autowifi.py, placed in the/HOME/PI directory: #!/usr/bin/pythonimportos, Time whiletru

please refer to the other blog post for the circuit connection method: "Color control for RGB LEDs with Raspberry Pi--c language version"Python code:#!/usr/bin/env python#********************************************************* #File Name:rgb.py#author:jason Dai #Date: 2015/02/04#*************************************

Gpio Library core function, of course, is the operation of Gpio, Gpio is the "general input/Output" interface, such as lighting a LED, relays, or through the IIC SPI 1-wire and other protocols, read, write data, this is the use of Gpio, can say no gpio, Raspberry Pi can only be used as a small computer, with a gpio, it is upgraded to a controller. First of all, how to operate a digital volume (high and low

The DHT11 is a temperature and humidity sensor with calibrated digital signal output. Precision humidity +-5%RH, temperature +-2℃, range humidity 20-90%rh, temperature 0~50℃. I bought a good package of modules, the top with a pull-up resistor, directly to the Raspberry Pi can be gray, purple, blue respectively represents data, 3.3V, 0V, to the Raspberry

Introduced The DHT11 is a cheap accessory that includes temperature and humidity sensors, and the code is easy to use. This article describes if you use DHT11 in a Raspberry Pi, the code is python. If you have any questions, please leave a comment below. Wiring VCC Connection 5V or 3.3V Data is connected to the Gpio (I'm picking up the B

motion #counterlastuploaded =timestamp Motioncounter=0#Otherwise, the hostel is not occupied Else: Motioncounter=0#Check to see if the frames should is displayed to screen ifconf["Show_video"]: #Display the security feedCv2.imshow ("Security Feed", frame) key= Cv2.waitkey (1) 0xFF#if the ' Q ' key is pressed, break from the Lop ifKey = = Ord ("Q"): Break #clear the stream in preparation for the next frameRawcapture.truncate (0)Conf.json{ "Sh

) # Numbers GPIOs by physical Locationgpio.setup (IN1, GPIO. Out) # Set Pin ' s mode is Outputgpio.setup (IN2, GPIO. Out) GPIO. Setup (IN3, GPIO. Out) Gpio.setup (IN4, GPIO. def loop (): While True:print "Backward ..." backward (0.003, up to) # Steps---angleprint "Stop ..." Stop () # Stoptime.sleep (3) # sleep 3sprint "forward ..." forward (0.005) print "Stop ..." Stop () Time.sleep (3) def Destroy (): Gpio.cleanup () # Release Resourceif __name__ = = ' __main__ ': # program star

The content of this article is Raspberry Pi python get GY-85 nine axis module information example, here using Python curses package development cli window program, used to refresh the sensor reading in real time, see the code first GY-85.py: The code is as follows: #! /Usr/bin/python3#-*-

/text2audio?tex= Open success lan=zhcuid=b8-27-eb-ba-24-14ctp=1tok=" +tok+"per=3" OS.System' mpg123 '%s '%url) elif' Pause '. Encode ("Utf-8") in Info:url ="http://tsn.baidu.com/text2audio?tex= begins to pause lan=zhcuid=b8-27-eb-ba-24-14ctp=1tok=" +tok+"per=3" OS.system ( ' mpg123 "%s" %url) time. sleep (10) url = " per=3 "OS. system ( ' mpg123 "%s" %url) continue else:tex = turling.tuling (info) url = Yuyinhecheng.yuyinhecheng_api (Tok,tex) OS. system ( ' mpg123 "%s" %url) time. sleep (0. 5)

1#!/bin/Bash2#/etc/init.d/service_name3 4 # # # BEGIN INIT INFO5 # Provides:provider6# required-Start: $remote _fs $syslog7# required-Stop: $remote _fs $syslog8# Default-start:2 3 4 59# Default-stop:0 1 6Ten# short-description:example Initscript One # Description:this Service is a test A # # # END INIT INFO - - the Case " $" inch - start) - Echo "starting service_name" -cd/home/Pi + suPi-c"pyth