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Roomblock:a Platform for Learning ROS Navigation with Roomba, Raspberry Pi and RPLIDAR

What's this?"Roomblock" is a robot platform consists of a Roomba, a Raspberry Pi 2, a laser sensor (RPLIDAR) and a mobile battery.The mounting frame can be made by 3D printers. ROS navigation system enable to make a maps of rooms and use it to reach to the goal autonomously.Who need this?Anyone want to learn the cutting-edge technologies of robotic navigation, mapping, and autonomous driving. This robot can is built easily and lower cost than other co

ROS Learning Series--Roomba, Xtion Pro live 360-degree panorama photo Panorama unable to start the solution

Turtlebot has an application panorama to realize iPhone360 panorama photography function. The official use of the Create base and Kinnect, when using the Roomba base and the Xtion Pro live package, found that the tutorial does not start.1. StartRoslaunch turtlebot_bringup minimal.launch \ Load wheel drive Open another Shell windowRosservice Call Turtlebot_panorama/take_pano 0 360.0 30.0 0.3 ordered a camera spinThis time found that

8 jQuery tips and tips for programmers and jquery tips for programmers

8 jQuery tips and tips for programmers and jquery tips for programmers1) Disable right-click JQuery programmers can use this code to disable right-clicking on a webpage. 12345678910 $(document).ready(function() {//catch the right-click context menu$(document).bind("contextmenu",function(e) { //warning prompt - optionalalert("No right-clicking!");//del

Lync Tips -48-lync voice mail-English tips-auto attendant-Chinese tips

Problem:1. Call-sa-6001-voice mail-English tips (some users)650) this.width=650; "height=" 434 "title=" clip_image001 "style=" border:0px; "alt=" clip_image001 "src=" http:/ "border=" 0 "/>2. Call-aa-6002-Auto Attendant-Chinese tips (all users)650) this.width=650; "height=" 434 "title=" clip_image002 "style=" border:0px; "alt=" clip_image002 "

Oracle optimized-leading tips and ordered tips and materialize tips

"(+)) 11-filter (" SA "). Longitude "is not NULL" 12-access (To_number ("longitude") >119.191148 and To_number ("LATITUDE") >26.074423 and To_number ("longitude") This execution plan looks incredibly normal and should be left join.The key to the problem, however, is the 10 step-MERGE JOIN Cartesian. The sorting of the Cartesian product merges connections, which takes a long time.Waiting for this result will take dozens of seconds, even longer!How to solve such problems, there are s

Eclipse IDE Usage Tips (Eclipse workspace tips) (some of your own learning notes and tips, documentation, memos and review use)

. Copy the EPF suffix file from the company home, then import the EPF file at home toFinally, we import the file into eclipse in the home computer, such asAfter importing, it is tantamount to importing the company's ECLISPE settings into the home's Eclispe.OK, let's start with some tips on how to get the ECLISPE started! Eclispe at the start of the time we will choose a workspace, some people will check the option below, meaning that the next time you

10 Very useful PHP tips for beginners, beginner PHP tips _php Tutorial

10 Very useful PHP tips for beginners, beginner PHP Tips This article introduces some tips and tricks for improving and optimizing PHP code for your reference, as follows 1. Do not use a relative path, define a root path Such lines of code are common: Require_once ('.. /.. /lib/some_class.php '); There are many drawbacks to this approach: 1), it first search PHP

Jquery tips and tips

Jquery tips and tips The following describes some Jquery tips. For example, you can disable right-click, hide text in the search text box, open a link in a new window, check the browser, pre-load the image, switch the page style, set the height of all columns, dynamically control the page font size, and obtain the X value Y of the mouse pointer, whether the verif

10 PHP tips that are very useful to beginners and php tips for beginners _ PHP tutorials

10 PHP skills that are very useful for beginners and for beginners. 10 Useful PHP skills for beginners. This article describes some tips and skills for improving and optimizing php code for your reference. the specific content is as follows: 1. do not use 10 PHP skills that are useful to beginners. This article introduces some tips and tips for improving and opt

PHP Code Optimization Tips Summary, PHP tips Summary _php Tutorial

PHP Code Optimization Tips Summary, PHP tips Summary The purpose of PHP optimization is to spend the least amount of time on the fastest running speed and the easiest to maintain code. Here are some optimization tips for you: 1. Echo is faster than print. 2. Use Echo's multiple arguments instead of string connections. 3. To determine the maximum number of cycle

Common PHP tips and php tips

num from $ table $ where "; $ result = mysql_query ($ query); $ row = mysql_fetch_array ($ result); $ sumcnt = $ row ["num"]; if ($ sumcnt = 0) {nerror ("No news has been selected for this version! ");} $ Paper = 1 ;}$ sumpaper = ($ sumcnt-$ sumcnt % $ ECHOCNT)/$ ECHOCNT; if ($ sumcnt % $ ECHOCNT )! = 0) $ sumpaper + = 1; if ($ sumpaper = 1 $ HALT = 0) return ($ where ); $ enwhere = base64_encode (base64_encode ($ where); if ($ LRLIST * 2 + 1) Use of paging functions in PHP8. PHP image file u

Flash builder tips and tips

This article provides several simple and effective tips, saving time and shortcuts, and other practical information that can improve the efficiency of Flash builder. Note:The CTRL and ALT keys used in this article are only applicable to Windows. For Mac, the equivalent key of the ctrl key (WIN) is the command key, while the equivalent key of the Alt key (WIN) is the option key. Note:Added: new or enhanced features in Flash builder 4.5 Code Completion

12 very practical JavaScript tips for "recommended" _javascript tips

This article will share 12 tips on JavaScript. These tips may help you solve some of the problems in your actual work. Use!! Operator Conversion Boolean value Sometimes we need to check whether the value has a valid value for a variable or not, and return a true value if it exists. In order to do such verification, we can use!! Operators to achieve is very convenient and simple. For variables you can use!

PHP code optimization tips and php tips _ PHP tutorials

PHP code optimization tips and php tips. PHP code optimization tips summary, php tips summary PHP optimization aims to get the fastest running speed and the most easily maintained code at the lowest cost. The following optimization tips are provided: PHP code optimization

12 very useful JavaScript tips [recommended] and javascript tips

12 very useful JavaScript tips [recommended] and javascript tips This article will share with you 12 tips on JavaScript. These tips may help you solve some problems in your actual work. Use !! Operator to convert boolean values Sometimes we need to check whether a variable exists or whether the value has a valid value.

ASP. Net tips that you may not know, And tips

ASP. Net tips that you may not know, And tips 1. After submitting the page, keep the position of the scroll bar You can add the MaintainScrollPositionOnPostback command to the page command. 2. After loading the page, move the focus to a control. You only need to specify the DefaultFocus attribute of the Form. ... 3. Set the default button of form through the DefaultButton attribute, that is, the b

12 HTML5 design tips and html5 tips that are not well-known

12 HTML5 design tips and html5 tips that are not well-knownThe following are 12 tips for HTML5 design that are not well-known: 1. for interaction, use the sliding operation to the right with caution. For example, the effects of scratch and smear, and sliding pages between left and right.Cause: Sliding to the right of an Apple mobile phone is easy to trigger and r

45 Javascript tips and 45 javascript tips

45 Javascript tips and 45 javascript tips Original article: 45 Useful JavaScript Tips, Tricks and Best Practices 45 useful JavaScript tips and best practices Translator: dwqs In this article, I will share some common JavaScript skills, tips, and best practices. JavaScript de

PHP Tips: 50 Practical tips for high-quality PHP code (Part One)

50 high-quality PHP code practical tips, I hope you like it. 1. Do not use relative pathsOften you will see: Require_once ('.. /.. /lib/some_class.php '); This approach has many drawbacks: it first finds the specified PHP include path, and then finds the current directory. Therefore, too many paths are checked. If the script is included in a script from another directory, its base directory becomes the directory where the other script resides. Anothe

ASP. NET tips and tips on codemash and handouts and Demo code for the LINQ lecture

[Original article] ASP. NET tips and tricks and LINQ slides/demos from codemash[Original article publication date] Sunday, January 21,200 pm The following are the handouts and demos of the two lectures I gave at the codemash conference last Friday.Code: ASP. NET 2.0 tips and tricks This lecture covers ASP. net ui, Ajax, caching and deployment skills/tips, a

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