Installation on existing raspbian

Installation from source

see the five steps described in the "Installing from source" section of

https://octoprint.org/download/

Installing Python2.7 including pip and virtual env

python --version
Python 2.7.13

pip install virtualenv

Collecting virtualenv
  Downloading https://files.pythonhosted.org/packages/7e/1b/6c00d57127608793e16e8b7f813e64d58a1938505c42fe190d1386ab41e1/virtualenv-16.4.0-py2.py3-none-any.whl (2.0MB)
    100% |████████████████████████████████| 2.0MB 134kB/s 
Installing collected packages: virtualenv
Successfully installed virtualenv-16.4.0

virtualenv will not be available via command line at this point so the instructions from the forum article will provide virtualenv.

sudo apt install python-pip python-dev python-setuptools python-virtualenv git libyaml-dev build-essential

Obtaining the octoprint source

git clone https://github.com/foosel/OctoPrint.git

Creating a virtual environment

wf@pito:~/source/python/OctoPrint $ virtualenv venv
Running virtualenv with interpreter /usr/bin/python2
New python executable in /home/wf/source/python/OctoPrint/venv/bin/python2
Also creating executable in /home/wf/source/python/OctoPrint/venv/bin/python
Installing setuptools, pkg_resources, pip, wheel...done.

Installing OctoPrint into that virtual environment

wf@pito:~/source/python/OctoPrint $ ./venv/bin/python setup.py install
running install
running bdist_egg
running egg_info
creating src/OctoPrint.egg-info
...
Adding pytz 2018.9 to easy-install.pth file

Installed /home/wf/source/python/OctoPrint/venv/lib/python2.7/site-packages/pytz-2018.9-py2.7.egg
Finished processing dependencies for OctoPrint==1.3.10

Start OctoPrint Server

./venv/bin/octoprint serve

Finish Install via Webbrowser

Octoprint listens on port 5000 by default:

http://<octoprintserver>:5000/

Will bring up the Setup Wizard

CuraEngine

http://docs.octoprint.org/en/master/bundledplugins/cura.html

sudo apt-get -y install gcc-4.7 g++-4.7
git clone -b legacy https://github.com/Ultimaker/CuraEngine.git
cd CuraEngine
make

Webcam

see .g.

MJpegStreamer

sudo apt-get install libjpeg-dev libjpeg8-dev imagemagick libav-tools cmake
git clone https://github.com/jacksonliam/mjpg-streamer.git
cd mjpg-streamer/mjpg-streamer-experimental
make

Autostart

.config/autostart/octoprint.desktop

[Desktop Entry]
Type=Application
Name=OctoPrint
Comment=OctoPrint service
NoDisplay=true
Exec=/home/wf/bin/octoprint

Add your user to group dialout

You might want to run this command once to get access to the /dev/ttyUSB0 device

sudo usermod -a -G dialout $(whoami)

octoprint start script

#!/bin/bash
# WF 2019-02-24
# Octoprint startup script

# set these variables according to your installation
mjpg=$HOME/source/cpp/mjpg-streamer
mjpg_port=8080
octo=$HOME/source/python/OctoPrint

#
# check whether the given process runs
# param #1: l_process  - the process to check
#
check_run() {
  local l_process="$1"
  pgrep -fl "$l_process"
  local l_presult=$?
  if [ $l_presult -eq 0 ]
  then
    echo "$l_process already running"
    # comment out as you like
    # either stop here
    #echo "to kill the process you might want to use"
    #echo "pkill -f $l_process"    
    #exit 1
    # or fully automatic kill
    echo "killing $l_process" 
    pkill -f "$l_process"    
  fi
}

#
# make sure the given logfile exists and is accessible
# param #1: l_logfile
#
prepare_log() {
  local l_logfile=$1
  sudo touch $l_logfile
  sudo chown $(whoami) $l_logfile
}

#
# start the webcam streamer
#
start_streamer() {
  check_run  mjpg_streamer
  cd $mjpg/mjpg-streamer-experimental
  log=/var/log/mjpeg_streamer.log
  prepare_log $log
  echo "starting mjpg_streamer logging to $log"
  nohup ./mjpg_streamer -i "input_uvc.so -d /dev/video0 -r 1920x1080" -o "output_http.so -p $mjpg_port -w ./www" >> $log 2>&1 &
}


#
# start octoprint
#
start_octoprint() {
  check_run "octoprint serve"
  log=/var/log/octoprint.log
  prepare_log $log
  cd $octo
  echo "starting octoprint logging to $log"
  nohup ./venv/bin/octoprint serve >> $log 2>&1 &
}

start_streamer
start_octoprint

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