Robot installation

Installation of software on the robot

Linux

Start with a freash ubuntu 18.04 desktop full.

Packages to install

Install:

ntp
ntpdate
openssh-server
git
python-pip

sudo apt install ntp ntpdate openssh-server git python-pip

Install ros-melodic-desktop-full, follow instructions in: http://wiki.ros.org/melodic/Installation/Ubuntu up to section 2. Tutorials.

NTP

Network time protocold, to keep clock in sync. At DTU most clock sources are blocked, the clock source need to be configured.

At DTU, edit /etc/ntp.conf, add ntp.ait.du.dk to server pool

...
# Use servers from the NTP Pool Project. Approved by Ubuntu Technical Board
# on 2011-02-08 (LP: #104525). See http://www.pool.ntp.org/join.html for
# more information.
pool ntp.ait.dtu.dk
...

Sync time

ntpdate -u ntp.ait.dtu.dk

Should work in and around DTU - see also NTP howto for more details.

Boot in terminal mode

To boot in terminal mode. uncomment this line in /etc/default/grub

...
# Uncomment to disable graphical terminal (grub-pc only)
GRUB_TERMINAL=console
...

Start graphics using "startx" after this change, if you need.

flexbot code

Git repository is installed by

cd
git clone https://repos.gbar.dtu.dk/git/jcan/flexbot.git flexbot

MAV link

Generate MAV link code (between ROS and Teensy controllers)

Install tk dialogs and controls and start generator

pip install future
cd ~/flexbot/code/MAVLink/Generator
python mavgenerate.py

And follow the instructions here http://rsewiki.elektro.dtu.dk/index.php/Mavlink#Generating_C-headers_.26_Python_file

Teensy code compile

Install Arduino and Teensyduino as described in Software installation section "Toolchain installation" and "Teensy loader and udev rules"

and make tool links in teensy code directory (arduino version numbers and directory could be different):

cd ~/flexbot/code/teensy_v2/
ln -s ~/arduino-1.8.7/hardware/tools .
ln -s ~/arduino-1.8.7/hardware/teensy/avr/cores/teensy3 .
ln -s ~/arduino-1.8.7/hardware/teensy/avr/libraries libteensy   
ln -s tools/teensy .

The teensy code is compiled using a Makefile and not the arduino IDE, so:

cd ~/flexbot/code/teensy_v2/
mv teensy3/main.cpp teensy3/main.cpp.not
make

And to upload to teensy processor connected to this robot

make upload (NB! only works if there is one Teensy connected)

ROS for flexbot

Make a ROS workspace for flexbot (from http://wiki.ros.org/ROS/Tutorials/InstallingandConfiguringROSEnvironment)

cd
mkdir -p flexbot_ws/src
cd flexbot_sw
catkin_make

Link the flexbot code into the src directory

cd src
ln -s ~/flexbot/code/base_node_ros
cd ..
catkin_make