3 3 v relay board

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 Raspberry Pi mode,In fact, after the installation of the latest noobs is the default serial0, and we use ttyAMA0, and some say this and Pi3 on-board Bluetoo

Windows on Device Project Practice 3: ondevice In the first two articles, "Windows on Device Project Practice 1-PWM bulb lamp production" and "Windows on Device project practice 2-bulb lamp production, we learned how to use the Intel Galileo Development Board and Windows on Device to design and complete the creation of PWM bulb and photosensitive lights. In this project, we will use the flame sensor and buz

Add the hardware abstraction layer (HAL) module on Ubuntu to access the Linux Kernel Driver (Lao Luo study note 3) and ubuntuandroid In the overview and learning plan of the hardware abstraction layer (HAL) of Android, we briefly introduce how to write a driver for the hardware in Android. To put it simply,Hardware drivers are distributed in the Linux kernel and in the hardware abstraction layer of the user space.. Next, compile the Linux kernel drive

Environment: Hardware: Raspberry Pi III Model B, 5MP Camera Board Module Software: RASPBIAN,OPENCV Installation dependencies$ sudo apt-get update $ sudo apt-get upgrade $ sudo rpi-update Restart the system after installation is complete$ sudo reboot Installing OPENCV development Tools$ sudo apt-get install build-essential git cmake pkg-config Install OPENCV Image Library and other dependencies$ sudo apt-get install Libjpeg-dev libtiff5-d

Learn psychologist TodayOne problem is that Xcode generates the Viewcontroller class name is "Viewcontroller", I want the change it to "Psychologistcontroller", the This can Done by:1. Click on the class name (in the source code)2. Edit->refactor->renameThen another problem are, the storyboard can ' t connect to the new named Controller,Need to change the customer class in the Story board editor:As desribed in:Http://stackoverflow.com/questions/193702

=====vpc======Configuration processInterface Edage) # VPC Memeber 100Dual Xia Lian: member PortSingle Xia Lian: Oraphe portStandard VPC = = multiple layersEnhance VPCVPC over fp=== VPC PlusVPC over VxlanVPC over ACIVPC Guidelines:1-switch Type Platform2-link speed:10gbp+3-VPC Keep Live (up to three layers)4-VPC Peer Link: Wanchaoca5-number of VPC Peers:26-number of VPC Domain PER switch:17-routing "VPC Peer-gateway"====fex=====Fex: Is the remote

This section explains the parts of machine lookup in the Setup_arch function, and analyzes the definition, storage, alignment and acquisition of the kernel.Introduction to 2.16.6.1 and Setup_arch functionssetup_arch(command_line);(1) from the name, this function is the CPU architecture related to some of the creation process.(2) In fact, this function is used to determine the current kernel of our machine (arch, machines). Our Linux kernel supports the operation of a CPU, the cpu+

that time saw a lot of tutorials, For example, the most famous is the blogger Oriental Red Dragon Raspberry Pi 2 compiled the full version of the Ros-indigo, then the Raspberry Pi 3 released, on the basis of Raspberry Pi 2 added on-board Bluetooth, wireless, and the corresponding performance also improved, this time I also have a snack itch, So continue into the pit ready with Raspberry Pi

Policy patterns define a series of algorithms, encapsulate each algorithm, and make them replaceable. The rule mode allows algorithms to change independently of customers who use it. (Original article: The Strategy Pattern defines a family of algorithms, encapsulates each one, and makes them interchangeable. Strategy lets the algorithm vary independently from clients that use it .) Context ): 1. The ConcreteStrategy algorithm is required. 2. Maintain a Strategy instance internally.

I,CodeThe execution process of is the process of calling a method. When a method is dropped for the first time, the CLR checks the type referenced by the method, and then the CLR tries to load the referencedProgramSet list. If the type referenced by the method is exactly in this file, CLR will execute some internal bookkeeping work and then use this type. If the list shows that the reference type of the method is in another file, CLR will try to load these files, perform some bookkeeping work, a

In this chapter, let's use the SP framework to create a simple message Program (why is this the most simple one? It can also reflect the speedphp function. I personally think that simplicity is beautiful, can also be understood more quickly ~),It is very effective to use instances to learn program development. At the same time, we can also understand the development process of the actual network project.This example will be provided for you to download later ~ First, let's take a look at the req

In the Board folder, the basic code structure is divided into SRC and include two subfolders. Store source code files respectively. # Cc = arm-Linux-gcccc = gcccflags =-lpthreadincpath =-I .. /.. /includeobj = log. O init. O serial. O thread. O socket. O socket_dev.o systeminfo. O main. O target = intelligenthome %. o: %. C $ (CC)-O [email protected]-C $ After the source code structure is established, edit it in the corresponding. c/. h file.

them. We only need to select the corresponding functions, assign the value to the handle_irq field of the irq_desc structure corresponding to IRQ. These standard callback functions are of the irq_flow_handler_t type: typedefvoid (*irq_flow_handler_t)(unsigned int irq, struct irq_desc *desc); Currently, the general interrupt subsystem implements the following standard throttling callback functions, which are defined in: kernel/IRQ/chip. C, Handle_simple_irq is used for simple traffic cont

. Bubble breaker has five colors of bubbles, and I created a style for eachColor. I did not create a separate template. Each style has its ownTemplate. Collapse Copy code Style X: Key =" Buttonstyleblue" Targettype =" Button" > Setter Property =" Background" Value =" # Ff1f3b53" / > Setter Property =" Foreground" Value =" # Ff000000" / > Setter Property =" Padding" Value =" 3" / > Setter Prop

Today, when Ajax is widely used, the pop-up window simulation, thinkbox, greybox, and many other special effects use the masked functions. Its application is also very simple for us: Creating an absolute positioning, the top/left values are both 0, and the width and height are equal to the height and width of the browser content. Then, you can set the index to a greater value. However, there are some problems and skills that you may not know or are not clear about. Here we will summarize some po

Summary: A simple message board can be implemented simply by writing a little bit of code. Shows the convenience and powerful functions of LINQ. Content: Process: 1. Create a database 2. Create a webapp and attach a database 3. Add the LINQ to SQL classes to automatically complete many tasks. 4. Page Layout 5. Background code A) *** datacontextctx = new *** datacontext ("connection "); B) read the data and

light direction is the-Z direction of the local coordinate system of the light, and the second parameter is the color. A point light source (pointlight) is a light source that simulates a scene or a scene, like a lamp or a street lamp. Point Light and directional light There are two differences, one is the point light source surface light source direction is different, and the second is the surface of the light source will be as far away from the source of light and less.How to use_pointlight =