Little John Hardware Architecture

 Little John is a robot composed of two subsystems: a five-DOF manipulator based on the Dynamixel AX18 servomotors and the differential mobile platform Create.

littleJohnLowR

 The hardware architecture available today for use of this robot consists in two Kinects located in the ceiling; markers to define the inertial frame, the Little John frame and any other frame that is important for the task the user wants to perform; a computer to manage the robot control and the system as a whole; and the Little John itself. 

The computer has an Intel Xeon 2.4GHz with 12M cache, 12 GB RAM, Nvidia Quadro and runs Ubuntu 14.04 LTS and ROS Indigo. The two Kinects compose the vision system and can detect the markers in its area range. The ROS Indigo is used to send and receive commands to/from the Little John and the Kinects.

For developers who want to know more about the software architecture, refers to the Little John Tutorial in our wiki.

arquitecturaModifiedLowResolution

 

Autobotz

Undergraduate Student

Vittor Faria Pereira

Undergraduate Student

Rodrigo Cezar Luz Brochado

Undergraduate Student

Daniel Leite Ribeiro

Undergraduate Student

Pedro Blanc Árabe

Undergraduate Student

Josué Henrique de Freitas Andrade

Undergraduate Student

Bianca Martins Gontijo Pereira

Undergraduate Student

Rafael Santos de Almeida

Undergraduate Student

Nathalia Paixão

Undergraduate Student

Bhryan Henderson Perpétuo

Frequently Asked Questions

Non MACRO members:

Q. I haven't found the information I was looking for in the website. Where can I look for more information?

A. Please contact Prof. Adorno (adorno at ufmg.br) or Prof. Raffo (raffo at ufmg.br).

 

MACRO members:

Q. I'm a new member of MACRO. What should I do?

A. First, make sure that you have access to all our communication channels. The most important one is our email group (macroufmg at googlegroups.com), where all official messages are sent. Please talk to your advisor and ask him to include you in the list. Also, take a look at our website to know more about our research group, the people involved, etc.

Q. What kind of information should I send to the email group?

A. This list includes current and former members. Any general information related to our research group that is relevant to all members is appropriate. Below there are some examples of what is appropriate and what is not:

You did a cool video related to your research project and want to share with the group: appropriate. Yes, this is the right place!

You want to be included in the website (or any other MACRO resource) but don't know how and sends an email to the email group: inappropriate. You should talk to your advisor or a senior colleague instead of sending an email to the whole group.

You want to ask the opinion of MACRO members about something (for example, the color of MACRO's new t-shirt), so you start a discussion in the group about it: inappropriate. Although this subject is potentially of everyone's interest, it is a better idea to use of one of those online polls/doodle and send only the link to the group. This avoids endless discussions.

Q. What communication channels, other than email, does MACRO have?

A. Besides email we communicate using a Trello dashboard, whose link you can find at this wiki entry. To request access to this channel, ask for your advisor's authorization and send an email to Brenner Santana (This email address is being protected from spambots. You need JavaScript enabled to view it.).

Another sort of communication channel is our wiki. If you would like to contribute with contents to the wiki, request an account here.

Q. How can I request a place in the laboratory?

A. The organization of the laboratory and all the vacant places follow a hierarchical organization that might depend on the students' date of entrance and on the capacity for their advisors to ask for a place, as well as the date of request. You can check the corresponding list here. Places are allocated exclusively to graduate students.

Q. Can I use the available robots?

A. Yes, as a MACRO member you are able to use any of the robots and devices available. However, you should check the schedule for availability and then create an event specifying your name, the time, and the robots or devices you are going to use. Before using the robots you must be registered as editor of the robots' usage calendar. Ask for your advisor's authorization and send an email to Brenner Santana (This email address is being protected from spambots. You need JavaScript enabled to view it.).

 

 

 

 

 

Job Opportunities

 

Faculty member
Job description
Deadline

Gustavo Medeiros Freitas

This email address is being protected from spambots. You need JavaScript enabled to view it.

The Vale Institute of Technology (ITV) is currently selecting one undergraduate student from UFMG to work in Undergraduate Internship with mobile robots and ROS. Interested UFMG students should send an e-mail to Prof. Gustavo Freitas with curriculum vitae.

 

Call for positions (in portuguese)

 

August 01, 2018

CLOSED



Guilherme Vianna Raffo

This email address is being protected from spambots. You need JavaScript enabled to view it.

The MACRO group is currently selecting undergraduate students from UFMG to work in Undergraduate Internship (3 positions) and Bachelor Thesis (2 positions) in the ProVANT project, whose objective is the development of convertible unmanned aerial vehicles. Interested UFMG students should send an e-mail to Prof. Guilherme Vianna Raffo, with curriculum vitae and undergraduate records including your score (RSG).

 

Call for positions (in portuguese)

 

July 03, 2018

23:59 (GMT-3)

CLOSED

Subcategories

  • Joomla!
    • Extensions

      The Joomla! content management system lets you create webpages of various types using extensions. There are 5 basic types of extensions: components, modules, templates, languages, and plugins. Your website includes the extensions you need to create a basic website in English, but thousands of additional extensions of all types are available. The Joomla! Extensions Directory is the largest directory of Joomla extensions.

      • Components

        Components are larger extensions that produce the major content for your site. Each component has one or more "views" that control how content is displayed. In the Joomla administrator there are additional extensions such as Menus, Redirection, and the extension managers.

      • Modules

        Modules are small blocks of content that can be displayed in positions on a web page. The menus on this site are displayed in modules. The core of Joomla! includes 24 separate modules ranging from login to search to random images. Each module has a name that starts mod_ but when it displays it has a title. In the descriptions in this section, the titles are the same as the names.

        • Content Modules

          Content modules display article and other information from the content component.

        • User Modules

          User modules interact with the user system, allowing users to login, show who is logged-in, and showing the most recently registered users.

        • Display Modules

          These modules display information from components other than content and user. These include weblinks, news feeds and the media manager.

        • Utility Modules

          Utility modules provide useful functionality such as search, syndication and statistics.

        • Navigation Modules

          Navigation modules help your visitors move through your site and find what they need.

          Menus provide your site with structure and help your visitors navigate your site. Although they are all based on the same menu module, the variety of ways menus are used in the sample data show how flexible this module is.

          A menu can range from extremely simple (for example the top menu or the menu for the Australian Parks sample site) to extremely complex (for example the About Joomla! menu with its many levels). They can also be used for other types of presentation such as the site map linked from the "This Site" menu.

          Breadcrumbs provide users with information about where they are in a site.

      • Templates

        Templates give your site its look and feel. They determine layout, colours, typefaces, graphics and other aspects of design that make your site unique. Your installation of Joomla comes prepackaged with three front end templates and two backend templates. Help

      • Plugins

        Plugins are small task oriented extensions that enhance the Joomla! framework. Some are associated with particular extensions and others, such as editors, are used across all of Joomla. Most beginning users do not need to change any of the plugins that install with Joomla. Help