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tutorials:demo:fetch_and_place [2021/11/08 17:54] – [Emacs] arthurtutorials:demo:fetch_and_place [2021/11/16 13:57] – arthur
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 This tutorial is from the "Demo Tutorials" category, which assumes no prior knowledge of Linux, ROS, Emacs, Lisp or robotics. This tutorial is from the "Demo Tutorials" category, which assumes no prior knowledge of Linux, ROS, Emacs, Lisp or robotics.
  
-Here is a link to a video that walks through the first part of the tutorial with voice explanations:+===== Important Links ===== 
 + 
 +  * The {{ :tutorials:demo:cram_fall_school_2021.pdf |presentation slides}} give a brief overview and introduction for this lecture and contain the most important informations on Emacs, our IDE for Lisp. 
 +  * The [[https://seafile.zfn.uni-bremen.de/f/a28c1de4acab4609b4f3/?dl=1|virtual machine (VM) file]] to run with VirtualBox. 
 +  * An explanation of the setup and first tutorial is also available with voice explanations (around 1h) as [[https://seafile.zfn.uni-bremen.de/f/c057cd48e1244d7997b8/|download]] or [[https://www.youtube.com/watch?v=0uJN-jRb7J4&feature=youtu.be|stream]], for those with spare time on another day. 
  
-https://seafile.zfn.uni-bremen.de/f/c057cd48e1244d7997b8/ 
-(or https://www.youtube.com/watch?v=0uJN-jRb7J4&feature=youtu.be) 
 ===== Motivation ===== ===== Motivation =====
  
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 ==== Technical Requirements ==== ==== Technical Requirements ====
  
-The VM image with VirtualBox has been successfully tested under Windows, MacOS and Ubuntu Linux. +  * The VM image with VirtualBox has been successfully tested for Windows, MacOS and Ubuntu. 
- +  * Some kind of GPU, dedicated or integrated, is required to visualize the running OS. 
-The machine on which you will be running the system needs a graphics card, it can be a built in laptop GPU as well. +  * At least 8GB of excess RAM for the VM is recommended, 4GB minimum. The more the better. 
- +
-We recommend to run the VM on a machine with 8 GB of RAM or more. +
-(The VM itself needs 4 GB of RAM, so the host machine should have at least 5 GB but 8 GB or more would be optimal.)+
  
  
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 {{ :tutorials:demo:vm4proc.png?800 |}} {{ :tutorials:demo:vm4proc.png?800 |}}
  
-Everything is set up. The VM can now be started. The Ubuntu 16.04 system should start and automatically log into the only account, with the username and password 'cram'.+Everything is set up. The VM can now be started. The Ubuntu 18.04 system should start and automatically log into the only account, with the username and password 'cram'. 
 + 
 +=== Last adjustments === 
 + 
 +There are two versions of CRAM available in the VM. By default, the setup is designed to connect and work with a project from the Unreal Engine, for intricate physics simulation. We don't need any of that for the upcoming tutorials, instead we change to the stable, standalone version of CRAM. In the VM, launch a terminal with Ctrl-Alt-T and open up the file ''.bashrc''. 
 + 
 +<code> 
 +nano .bashrc 
 +</code>
  
 +Put a ''#'' symbol in front of the ''source'' command for day 1 & 2 of the FallSchool, and remove it from the line below, referring to day 3 of the FallSchool. Save and close the file and type ''source .bashrc'' to activate the changes in your current terminal. From now on the changes are applied on every newly opened terminal.
  
 +By doing so, the terminal uses a different ROS workspace. Sourcing a ROS workspace enables the terminal session to access everything from that workspace, like loading a programming environment, or changing a namespace.
  
 ===== Understanding the Basics ===== ===== Understanding the Basics =====