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Raspberry Pi

Wireless Server for Repetier

Webcam

- UPGRADE -

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Parts for this section

Wireless 3D Printer Server
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Now that you can control your 3D printers from anywhere in the house, what can possibly be cooler than being able to keep an eye on it from anywhere!
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Here's how ...
 
 
  • Raspberry Pi Camera
  • Connect the RaspiCam to the Raspberry Pi as follows ... WARNING: connecting it can damage the camera
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Start and use your new Webcam
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  • In the Terminal window type:
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                     sudo /etc/init.d/mpjgstreamer start                                                                        this launches the application​
                     cd /home/pi/mjpg-streamer/mjpg-streamer-experimental                               to change the directory         
                      ./mjpg_streamer -o "output_http.so -w ./www" -i "input_raspicam.so"         this starts the raspicam camera
                     sudo /etc/init.d/mpjgstreamer stop                                                                         this stops the raspicam application
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Congratulations !!!  You've now got a webcam to keep an eye on things remotely.
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To setup the webcam to be used in Repetier Server you must open Repetier Server in a web browser  and go to Settings menu and then to the Webcam tab...
 
 
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Enter the required URLs using your own ip address:
  • Dynamic Image URL:       http://10.0.1.17:8080/?action=stream
  • Static Image URL:             http://10.0.1.17:8080/?action=snapshot
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Select the "Webcam Connection" from the drop down menu
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Install MJPG-streamer video camera  
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In a Terminal window you will need to type a series of commands as follows:
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  • You must download and install cmake if not yet done (see Trouble Shooting)
  • To download the updates, type (note: that it's LIBV4L-DEV as opposed to LIBV41-DEV !):
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​          cd /Download/cmake-3.4.1/                                                                                           # make sure to be in the correct directory !

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          sudo apt-get install libjpeg8-dev imagemagick libv4l-dev make gcc git cmake g++​

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         git clone https://github.com/jacksonliam/mjpg-streamer.git                     # To download MJPG-streamer​
         cd mjpg-streamer/mjpg-streamer-experimental/                                           # change the directory
         cmake -G "Unix Makefiles"                                                                                     # unpack and build the MJPG-streamer
         make
         sudo make install                                                                                                      # install the built files​
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  • Make sure to enable the raspicam, this is done by typing  sudo raspi-config and chosing Enable Camera
  • You will need to reboot the Raspberry Pi after this ... remember to restart the Repetier Server after rebooting
To make MJPG-streamer start up automatically at bootup (Optional):
  • In the Terminal window type the following commands 
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         cd /etc/init.d
         sudo wget http://www.repetier-server.com/en/software/extras/mjpgstreamer-init-debian/mjpgstreamer
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  • We need to edit the mjpgstreamer script since we're using RaspiCam as opposed to USB webcam:
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         In a Terminal window type:
         gksu nautilus
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         Locate the ​mjpgstreamer file in /etc/init.d directory and then open the file to edit the script
         In the script, replace "input_uvc.so" with "input_raspicam.so"
         Save As mjpgstreamer in the folder /home/pi/Desktop to make it easy to find
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         This may be redundant but, In a Terminal window type:
         gksu nautilus
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         mv /home/pi/Desktop/mjpgstreamer /etc/init.d/mjpgstreamer
         sudo chmod 755 mjpgstreamer
         sudo update-rc.d mjpgstreamer defaults
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To use MJPG-streamer by starting it manually each time you reboot your Raspberry Pi:
  • ​Run the MJPG-streamer application as a process in the background:
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         cd ~/
         /home/pi/mjpg-streamer/mjpg-streamer-experimental/mjpg_streamer -i "input_raspicam.so" -o "output_http.so -w       /usr/local/share/mjpg-streamer/www" -b
     
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To start the Raspicam, type the following command in a Terminal window:   
        sudo /etc/init.d/mpjgstreamer start     
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Trouble Shooting
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Installing the 8 megapixel camera
  • Type the following commands:
         sudo apt-get install cmake
         git clone https://github.com/raspberrypi/userland.git
         cd userland
         ./buildme
 
  • Then update the Kernel by typing:
        sudo rpi-update
 
  • Test the camera by typing:
        raspistill -o cam.jpg
 
 
 
Setup the Raspicam on Repetier Server
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Download and Install:   CMAKE (if not already done)
 
This software is needed to use the "cmake" commands. 
I've left the directory from which you're working since you must install software at correct location.
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  • Create a folder

       pi@raspberrypi ~ $                                                    mkdir Download

       pi@raspberrypi ~ $                                                    cd Download

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  • Download necessary file and extract it

       pi@raspberrypi ~/Download $                               wget https://cmake.org/files/v3.4/cmake-3.4.1.tar.gz

       pi@raspberrypi ~/Download $                               tar -xvzf cmake-3.4.1.tar.gz

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  • Compile and install cmake

       pi@raspberrypi ~/Download $                               cd cmake-3.4.1/

       pi@raspberrypi ~/Download/cmake-3.4.1 $       sudo ./bootstrap

       pi@raspberrypi ~/Download/cmake-3.4.1 $       sudo make

       pi@raspberrypi ~/Download/cmake-3.4.1 $       sudo make install

 

Update & Upgrade
 
Its's a good idea to do this just in case new releases are published
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  • In a terminal window, type the following commands:
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       pi@raspberrypi ~ $                                                    apt-get update

       pi@raspberrypi ~ $                                                    apt-get upgrade

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  • For more information about Raspicam:     
       https://www.raspberrypi.org/learning/getting-started-with-picamera/worksheet/
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  • Test the RaspiCam by typing the following command in the Terminal window:
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        raspistill -o cam.jpg
 
 
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