install gphoto2 version 2.5.5 on raspberry pi

easiest way is to use the install script from:
https://github.com/gonzalo/gphoto2-updater/blob/master/gphoto2-updater.sh

#/bin/sh

# Gphoto2 2.5.5 compiler and installer script v0.3.1

#

# This script is specifically created for Raspbian http://www.raspbian.org

# and Raspberry Pi http://www.raspberrypi.org but should work over any 

# Debian-based distribution

# Created and mantained by Gonzalo Cao Cabeza de Vaca

# Please send any feedback or comments to gonzalo.cao(at)gmail.com

# Updated for gPhoto2 2.5.1.1 by Peter Hinson

# Updated for gPhoto2 2.5.2 by Dmitri Popov

# Updated for gphoto2 2.5.5 by Mihai Doarna

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

if [ "$(whoami)" != "root" ]; then

echo "Sorry, this script must be executed with sudo or as root"

exit 1

fi

echo 

echo "----------------"

echo "Updating sources"

echo "----------------"

echo

apt-get update

echo 

echo "--------------------------"

echo "Removing gphoto2 if exists"

echo "--------------------------"

echo

apt-get remove -y gphoto2

echo 

echo "-----------------------"

echo "Installing dependencies"

echo "-----------------------"

echo

apt-get install -y libltdl-dev libusb-dev libexif-dev libpopt-dev libudev-dev

echo 

echo "-------------------------"

echo "Creating temporary folder"

echo "-------------------------"

echo

mkdir gphoto2-temp-folder

cd gphoto2-temp-folder

echo "gphoto2-temp-folder created"

echo 

echo "-------------------------"

echo "Downloading libusb 1.0.17"

echo "-------------------------"

echo

if wget -q http://ftp.de.debian.org/debian/pool/main/libu/libusbx/libusbx_1.0.17.orig.tar.bz2

then

tar xjvf libusbx_1.0.17.orig.tar.bz2

cd libusbx-1.0.17/

else

echo "Unable to get libusbx_1.0.17"

echo "Cleaning and exiting..."

exit 1

fi

echo 

echo "--------------------------------------"

echo "Compiling and installing libusb 1.0.17"

echo "--------------------------------------"

./configure

make

make install

cd ..

echo 

echo "----------------------------"

echo "Downloading libgphoto2 2.5.5"

echo "----------------------------"

echo

if wget -q http://downloads.sourceforge.net/project/gphoto/libgphoto/2.5.5/libgphoto2-2.5.5.tar.bz2

then

tar xjf libgphoto2-2.5.5.tar.bz2

cd libgphoto2-2.5.5

else

echo "Unable to get libgphoto2-2.5.5"

echo "Cleaning and exiting..."

exit 1

fi

echo 

echo "-----------------------------------------"

echo "Compiling and installing libgphoto2 2.5.5"

echo "-----------------------------------------"

echo

./configure

make

make install

cd ..

echo 

echo "-------------------------"

echo "Downloading gphoto2 2.5.5"

echo "-------------------------"

echo

if wget -q http://downloads.sourceforge.net/project/gphoto/gphoto/2.5.5/gphoto2-2.5.5.tar.gz

then

tar xzvf gphoto2-2.5.5.tar.gz

cd gphoto2-2.5.5

else

echo "Unable to get gphoto2-2.5.5"

echo "Cleaning and exiting..."

exit 1

fi

echo 

echo "--------------------------------"

echo "Compiling and installing gphoto2"

echo "--------------------------------" 

echo

./configure

make

make install

cd ..

echo 

echo "-----------------"

echo "Linking libraries"

echo "-----------------"  

echo

ldconfig

echo

echo "-----------------------------------------------------------------------------------------------"

echo "Setting up permissions for USB ports, see http://www.gphoto.org/doc/manual/permissions-usb.html"

echo "-----------------------------------------------------------------------------------------------"

echo

/usr/local/lib/libgphoto2/print-camera-list udev-rules version 0.98 group plugdev mode 0660 > /etc/udev/rules.d/90-libgphoto2.rules

echo 

echo "-------------------"

echo "Removing temp files"

echo "-------------------"

echo

cd ..

rm -r gphoto2-temp-folder

echo 

echo "--------------------"

echo "Finished!! Enjoy it!"

echo "--------------------"

echo

gphoto2 --version

script improvements: correct naming for captured images

for the webcam gallery the images shall be tagged with a naming convetion like hhmm_xx.jpg
xx varinats are:
hu = huge (original size, for klick&zoom-view in gallery)
la = large (smaller size, for direct view in gallery)
sm = small (small size, for thumbnail view in gallery)

And the photos shall be captured each 10 minutes.
The images shall have straight minute format.

And last but not least the images shall be placed in a directory-structure like /year/month/day/

Example: the image has been shot at 15:36h. DSCF2345.jpg was downloaded form the cam, and renamed by gphoto2 to webcam.jpg.
Then by imagemagick-command 'convert' the following images will be created:
1500_hu.jpg (original)
1500_la.jpg (reduced size 50% from original)
1500_sm.jpg (reduced size 20% from original)
All 3 photos will be uploaded by FTP in the correct folder.
The date-meta-data of the original photo 'webcam.jpg' has been taken into account to create the correct directory, and place the photos correctly.

The whole shell-script with the actual improvements:


#!/bin/bash

host='HOSTNAME'
USER='USERNAME'
PASS='PASSWORD'

rm *.jpg

while true
do
/usr/bin/gphoto2 --capture-image-and-download --filename "webcam.jpg"

imgname="webcam.jpg"
year=`date --reference $imgname +%Y`
month=`date --reference $imgname +%m`
day=`date --reference $imgname +%d`
hour=`date --reference $imgname +%H`
minute=`date --reference $imgname +%M`
mom=`date --reference $imgname +%H`
min=`date --reference $imgname +%M`

# show only full 10min
let min=$min/10*10
[ "$min" = "0" ] && min="00"
mom="${mom}$min"

mv $imgname $mom"_hu".jpg
convert $mom"_hu".jpg -resize 20% $mom"_sm".jpg
convert $mom"_hu".jpg -resize 50% $mom"_la".jpg

ftp -n -v $host <<EOT
ascii
user $USER $PASS
prompt
mkdir /webcamgallerydir/$year
mkdir /webcamgallerydir/$year/$month
mkdir /webcamgallerydir/$year/$month/$day
cd /webcamgallerydir/$year/$month/$day
put $mom"_hu".jpg
put $mom"_la".jpg
put $mom"_sm".jpg
bye
EOT
rm *.jpg
echo wait 10 minutes
sleep 600
done

download file from a server using ssh

A file can be downloaded from a server remotely by using the 'scp'-command as followed:

scp username@remotehost.tld:/remotedirectory/remotefile.txt /localdirectory

Example:
> scp bart@simpson.dyndns.com:/home/homer/marge.jpg /home/bart



open ssh connection on different port

ssh connections normally get opened on port 22.
In some cases the ssh port has been changed.
To get access from by shell command on different port, use -p and the port number.

Example:

> ssh 192.168.1.150 -p 2323

DSLR freeze - cam reset implemented

In some rare cases the DSLR freezes.
In this situation a power reset of the DSLR was the only way, to get it back to normal operation.
Due to the fact that the cam will be mounted on the roof of a house, the option of a remote-power-reset is desirable.

The idea was to switch a relay by one of the GPIO-ports of Raspi, remotely controlled via web-frontend.

Bash script 'camera_reset.sh':

#!/bin/bash
gpio mode 7 out
sleep 2
gpio write 7 1
sleep 3
gpio write 7 0
sleep 2
gpio mode 7 in

The "sleep" delays between the commands were necessary, to create a stable situation during command execution.
If the commands were executed without the delays, in some cases the commands were not executed properly or the RASPI freezes.

It was necessary, to use GPIO7 instead of GPIO16 or GPIO15, because GPIO16 and GPIO15 were immediately active during reboot of the raspi, and remained active - so the cam was not powered after a reboot of the raspi.

GPIO7 remains inactive (0) after reboot - so the cam is directly powered after reboot.

Also GPIO's 15 and 16 were not really stable.
In some cases the RASPI was freezed after switching GPIO15 or 16 as an OUT to 1 or 0.
Since I use GPIO7, I never experienced any freeze of the RASPI.

GPIO numbering:
WiringPi GPIO7 = Raspi GPIO4 = Raspi Pin7
see here:
http://wiringpi.com/wp-content/uploads/2013/03/gpio1.png

(howto's for script execution from a website, and the realized electrical circuit see earlier posts)

start shell script daily at 5:00am

edit /etc/crontab:

# sudo nano /etc/crontab

add line:
0 5    * * *   root    /home/YOUR_USER/YOUR_SCRIPT

REMARK:
if you change anything in crontab, you have to restart cron:
# sudo /etc/init.d/cron restart

allow 'sudo' from browser for script

if you want to execute a script by browser input, you need to allow the webserver-user 'www-data' to use 'sudo' without the need to use sudo-password.

Therefore you use 'visudo' to edit /etc/sudoers, and add the follwing line at the end of the file:

www-data ALL=NOPASSWD: /home/YOUR_USER/YOUR_SCRIPT.sh

stop linux process from website with php

content for html-file:

<html>
<body>
<?php
if ($_GET['run']) {
  # This code will run if ?run=true is set.
  exec("sudo /home/pi/kill.sh", $output2);
}
?>
<!-- This link will add ?run=true to your URL, myfilename.php?run=true -->
<a href="?run=true"><img src="stop-button.png" width="200" 0height="160" border="0" alt="stop"></a>
</body>
</html>


content for shell script:

sudo killall capture_endless

start linux shell script from website with php

html code:

<html>
<body>
<?php
if ($_GET['run']) {
  # This code will run if ?run=true is set.
  exec("/home/YOUR_USER/YOUR_SCRIPT.sh", $output);
}
?>
<a href="?run=true">START</a>
</body>
</html>

show linux process status on a website with php

html code:

<html>
<head>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<center>
<?php
  exec("ps ax | grep PROCESS_NAME | grep -v grep 2>&1", $output, $ret);
?>
<table>
<tr>
<td align="undefined" valign="undefined">
<h2>
<?php if ($ret == "0") { echo "PROCESS IS RUNNING..."; } else {echo "PROCESS IS STOPPED"; } ?> </td>
</h2>
</tr>
</table>
</body>
</html>

linux shell script for endless photo capture with gphoto2 and automatic ftp-upload

linux shell script sourcecode:

#!/bin/bash
host='YOUR_HOSTNAME'
USER='YOUR_USERNAME'
PASS='YOUR_PASSWORD'
counter=1
while true
do
/usr/bin/gphoto2 --capture-image-and-download --filename
ftp -n -v $host <<EOT
ascii
user $USER $PASS
prompt
cd /YOUR_FOLDER_ON_FTP_SERVER_WHERE_PHOTOS_SHALL_PLACED/
put *.JPG
bye
EOT
cp *.JPG /var/www/YOUR_WEBSERVER_FOLDER_WHERE_A_COPY_SHALL_PLACED/last.JPG
rm *.JPG
echo waiting 20 sec
sleep 20
done

raspberry shall send current IP adress via email

follow this:
http://elinux.org/RPi_Email_IP_On_Boot_Debian

sort 'top' output by PID reversed

shift-n

configure wlan settings

nano /etc/network/interfaces

reboot raspberry

shutdown -r now