raspberry pi relay control

Annotated Source: http://www.cnblogs.com/einstein-2014731/p/5551846.htmlThe use of the C language Control Raspberry Pi 3B serial port, to achieve the purpose of using the serial port to send and receive data. Previously thought this serial port is the default to be formulated into a serial control

=========================Rpio2 General Usage:SynchronouslyConst Gpio = require ('./lib/index.js'). Gpio; Const New Gpio (gpio.open); (gpio.output); for (var0; i++) { gpio.toggle (); Gpio.sleep (+);} Gpio.close ();AsynchronouslyConstGpio = require ('.. /lib/index.js'). Gpio;ConstGpio =NewGpio ( +); Gpio.open (gpio.output);voidfunction Loop () {Promise.resolve (Gpio.toggle ()). Then (Gpio.sleep.bind (NULL, -,true) . Then (Loop)} ();p Rocess.on ("SIGINT", function () {gpio.close (); Console

(decorated with @ post) The first route is very simple, that is, reading the index template (the template is html) and sending it to the client (browser), because the path is "/", that is, for example, the IP address of Raspberry Pi is 192.168.0.10. Use http: // 192.168.0.10: 8080 to access our "/" route (the default port of the bottle is 8080) Similarly, the second route path is "/cmd", that is, access ht

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#*********************************************************import Rpi.gpio as GPIOim

How to connect the circuit see another blog post:"using Raspberry Pi to control stepper motor--pythony language"/******************************************************* File name:stepmotor.c* Author:jason Dai* date:20 15/01/26******************************************************/#include Compile:GCC Stepmotor.c-o STEPMOTOR-LWIRINGPIRun:./stepmotorUsing

Youku Video Address: http://v.youku.com/v_show/id_XMTMxMDY0NzY2NA==.html?from=s1.8-1-1.2Recently in the play Raspberry Pi remote control car, very early on the WiFi remote control to give Nginx+lua, why not python? Because I don't like python.The back can be played outdoors, plus a digital tube and infrared. Digital Tu

) # 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

1. Effect display2. Hardware devicesIn a treasure bought a 4-bit common yin digital tube. 4 Number of common one cathode, altogether 12 pins. One of the 6,8,9,12 is a common-yin pin.　　Each number consists of A-g 7 diodes and a point DP. Because it is bought online without detailed device manuals, you can only test the pin and the digital diode on the corresponding relationship.　　You can see that the number 12th pin corresponds to the first digit of the common yin pin, the number 1th pin correspo

Raspberry Pi (Raspberry Pi Model B +) No monitor and wireless card get started GuideRecently bought a Raspberry Pi board (Raspberry Pi Model

City will play: Linux+python+raspberry Pi Brewing Beer" style= " vertical-align:middle;height:auto;margin:10px auto; "/> to run the brewing system, your Raspberry Pi must do two key things: measure the temperature from several different locations and use a relay switch to

After buying the Raspberry Pi, what can I do with it? There are a few ideas to share with the beginner's teaching film, which is well worth a visit. Http://www.youtube.com/user/RaspberryPiBeginners 1.Plug in the expansion card, DIY or teaching.The main usage, of course, is to plug in a GPIO card, put on a noodle board, pull some electrical circuit, control what t

Https://www.raspberrypi.org/documentation/usage/gpio/README.md2016/6/25GPIO: Raspberry Pi A and B# #介绍GPIO和在树莓派上进行物理编程The powerful feature of the Raspberry Pi is the GPIO (general purpose input and output) pins that surround the board, right next to the yellow video output jack.GPIO PinsThese pins are the physical inte

, so I used the TV speaker to output the sound. If the parameter is local, I would need to plug the headset into Raspberry Pi's multimedia outlet. In addition, the command to kill a process is: ps -A | grep proccess_name List all processes and find the pid of the proccess_name process. kill #### ##### Enter the pid Number Remote Desktop] Finally, I want to configure a remote desktop to control

The answer is yes. There are 26 pins on the Raspberry Pi Board, these gpio (general purpose I/O) including SPI, I²c, serial UART, 3V3 and 5V power supply. Domestic forum There is an article "RASPBMC Setting Infrared receiver" describes how to install the RASPBMC operating system for Raspberry Pi, install the infrared

Split Memory allocation, select how much memory to GPU A4 ssh to run SSH login, it is recommended to open an account this option, after the operation of Pi convenient, network on the line, do not open the screen. A5 SPI whether the SPI core driver is enabled by default, the novice will have no control. A6 Audio Select whether the sound is output to the analog or HDMI ports by default 0 Auto Selecti

0 PrefaceThis article reads Raspberry Pi CPU temperature through file operations. In Linux, any device operations are abstracted as file read/write, read the content in the/sys/class/thermal/thermal_zone0/Temp File to get the Raspberry Pi CPU temperature. This article describes how to read and apply the temperature par

Use the command line to set the Raspberry Pi wifi network and the command line Raspberry Pi wifi If you have not logged on to the Common graphic user interface, This method is suitable for setting Raspberry Pi's wifi. Especially when you do not have a screen or wired network

First components to be prepared:1. Raspberry Pi 3 Model B2, SD card one sheet3. Network cable and router4. ComputerRaspberry Pi PackagingRaspberry Pi FrontComponentsOne, SD card system writeFirst of all, download the Raspberry Pi

sprinkler and an electric rice cooker. Therefore, the Raspberry Pi Plus relay can fully extend its control over external devices. Dry-reed Relay refers to the reed relays, which are compared with the general relays, and their switching speed and life are greatly improved. T

its control over external devices.Dry-reed Relay refers to the reed relays, which are compared with the general relays, and their switching speed and life are greatly improved. The use of the relay is very simple, only the level control of its pin to complete the control of