flume dc

Smart Car PWM control DC Motor In the automotive industry, we must not only control the operation of automobiles through the CAN bus, but also need a DC motor to control the speed of the automobile in the intelligent remote control automobile market: we can use PWM wave at ordinary times, hardware changes voltage and other methods to change the voltage value at both ends of the vehicle motor, and then adju

For DC, in the instant of the closed switch, the capacitor is connected to the positive electrode of the power supply, the positive charge is the majority, The negative charge on the plate connected to the anode of the power supply is the majority, and the electric potential of each point in the circuit is equal immediately. Therefore, the capacitor in the DC circuit can play a role in separating the

a common distributed log collection system:Apache Flume, Facebook Scribe,Apache chukwa 1.flume, as a real-time log collection system developed by Cloudera, has been recognized and widely used by the industry. The initial release version of Flume is now collectively known as Flume OG (original Generation), which belon

People who have known flume, have seen this or similar picture, this article is to achieve part of the content. (due to limited conditions, it is currently implemented on a single machine)Flume-agent configuration file#flume Agent Confsource_agent.sources=serversource_agent.sinks=Avrosinksource_agent.channels=MemoryChannelsource_agent.sources.server.type=Execsour

Acquisition Layer Flume can be used mainly , Kafka two kinds of technology. Flume:Flume is a pipeline flow method that provides a number of default implementations that allow users to deploy through parameters and extend the API. Kafka:Kafka is a durable, distributed message queue. The Kafka is a very versatile system. You can have many producers and many consumers sharing multiple theme Topics. By contrast ,

Acquisition Layer can be used mainly Flume, Kafka two kinds of technology. Flume:Flume is a pipeline flow method that provides a number of default implementations that allow users to deploy through parameters and extend the API. Kafka:Kafka is a durable, distributed message queue. The Kafka is a very versatile system. You can have many producers and many consumers sharing multiple theme Topics. By contrast ,

Recently received a log collection of requirements, after testing and modification, the basic implementation of the desired function, recorded.Let's talk about the requirements of log collection, collect log logs every 1 hours, generate different Lzo compressed files by category, and generate logs to be placed in the first one hours of the directory. Get this demand first think of using flume to log collection, and then filter with interceptor, you ca

original articles, reproduced please specify: reprinted from The Never Enough This article link address: flume+hive processing Log Reprint please indicate: Always not enough»flume+hive processing log Translated from: http://www.lopakalogic.com/articles/hadoop-articles/log-files-flume-hive/ The situation is that you are told that you need to design a plan to hand

Architecture diagramData Flow graphSome of the core concepts of 1.Flume:2. Data flow modelFlume is the smallest independent operating unit of the agent. An agent is a JVM. A single agent consists of three components of source, sink, and channel, such as:Flume data flows are always run through events. An event is the basic unit of data for Flume, which carries log data (in the form of a byte array) and carri

This article describes the initial process of using flume to transfer data to MongoDB, covering environment deployment and considerations.1 Environment Constructionrequires JDK, flume-ng, MongoDB java driver, Flume-ng-mongodb-sink(1) jdk:http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html(2) flune-ng:http://www.apache.org/dyn/close

Flume custom hbasesink class Reference (to the original author) http://ydt619.blog.51cto.com/316163/1230586Https://blogs.apache.org/flume/entry/streaming_data_into_apache_hbaseSample configuration file of flume 1.5 # Name the components on this agenta1.sources = r1a1. sinks = k1a1. channels = c1 # Describe/configure the sourcea1.sources. r1.type = spooldira1.sour

The simulation implements printf function output as follows, ' d ' output shaping, ' C ' output character type, ' s ' output string, other output in its own formmy_printf ("dc\ts\ndc\ndc\ts!", 1, ' B ', "Zhangweina", 2, ' I ', 3, ' t ', "Welcome to You");Some small knowledge of the mutable parameter list:Macro Stdard.hVa_list declaring a typeVa_start The first argument is the name of the va_list variable, and the second argument is the last named argu

(1) Failure problem: The user's CST DC (distributed computing jobs) job has a decompression error,Tips are as follows:Error while decompressing:Extracted file: ........ .....No space left on device.Cause and Resolution: this is the user or user group disk quota is full cause decompression error, according to the hint there is no space; user jobs in the extracted path is in their home directory, the home directory is mounted on the Parastor storage, on

l298n Introductionl298n Drive module, can drive 2 DC Motor , can be used to achieve positive turn , reverse function.BOM ListArduino Uno * 1l298n Drive Module * 1DC Motor * 29v Battery * 1Jumper severalArduino Uno + l298n driver module wiringNote: If the voltage is not enough , the motor may not turn oh, so to external 7v-12v power.Program source code to upload the program to the motherboard, connected to the external power supply, the motor will turn

DC Motor Speed Regulation?for a given model, just modify the Controller part of the simulation purposes can be achieved, the previous code only proportional link, no integral and differential links, so need to increase these two links, here set kp=8 , Ki=1 , kd=60 , the resulting simulation waveform isIt can be seen that the acceleration and deceleration time is very short, rapid reaction, the overshoot is not small, the speed curve has a very low dev

Source: A ATMEGA128-based DC Motor lock-Dead programLet me tell you something about my hardware: a ATMEGA128 test board; a 80:1 variable speed motor with encoder, the output of the encoder is connected to the PD4 and PD5 pin of the microcontroller, and a motor drive circuit, the input of this circuit is: 24v power supply, two PWM signal input, The output is the positive and negative pole of the motor, to use the circuit to drive the motor, you must le

I. Preface When learning OpenGL, we found that many functions are global. In the previous chapters, we used to draw images in a window DC. How do we deal with drawing in multiple windows? There are a variety of online methods, one of which is used here. The wglmakecurrent function is used to switch between different windows, so that multiple windows can be simultaneously blurred. 2. Preparation Each window is bound to OpenGL through the following proc

I see a lot of screen interception articles on the Internet, I believe we have seen a lot. Every step of human progress is built on the basis of others, and what I am going to do today is to dynamically display a window on another window. The method is very simple, the core algorithm is to complete a window DC display to another window of the DC, in order to facilitate the reuse of code, I specifically put