How to Create Timelaps Videos with a Raspberry Pi 
20.6.13, 10:36 - Linux
gepostet von web doc
Since a g+ post from david singleton I too wanted to create such a cool timelaps video.

After some other projects on my Rpi I now found some time to install my cheap nikon L25 to the Raspberry and start recording :-)
well, in the end it worked...




some remarks:
Nautilus accesses the camera as soon as it is plugged in ... you must kill the process b4 accessing the camera with gphoto ( http://wiki.linuxquestions.org/wiki/Gphoto2 )
Nikon L25 has some kind of software error. The PTP mode hangs up if gphoto is used once. turn the cam on / off again :-( nevertheless 'gphoto2 --capture-image-and-download --interval=60' works...
ffmpeg needs renamed photos starting at something like foo1.jpg. DSCN0013.JPG as 1st pic will not work :-((thanks http://justinsomnia.org/2009/08/how-to- ... th-ffmpeg/ )

have fun!

EDIT

the problems above seem to disappear if you just boot your pi to console mode
Youtube on Rpi? 
9.6.13, 15:52 - Linux
gepostet von web doc
dass man mit dem RaspberryPi keine Youtube Videos anschauen kann, ist begründet damit, dass adobe seinen flashplayer nicht hierfür umgeschrieben hat (ich kenne einen für das Palm pre, der funzt ganz gut, aber für das pi hat es nie einer portiert...)

freie flashplayer alternativen wie gnash ruckeln leider unerträglich.
ich stiess durch zufall auf eine möglichkeit, die Steve Hickson umgesetzt hat:
http://stevenhickson.blogspot.de/2013/0 ... er-on.html

geile idee... er läd das video nach dem anklicken runter und läßt es im mplayer abspielen...
und das geht bis hoch zu 1080p!1

webdoc


Idea: Twitter Thermo Ticker 
7.4.13, 11:33 - Linux
gepostet von web doc
After building the TwitterMatrixTicker with my old Citizen 120D and the Raspberry Pi, I played a bit with my old POS Thermal printer. Especially to use it in my shop in Frankfurt City in the shop window as a gimmick.
Connecting the printer was easy, as easy as connecting the matrix printer 1 week before. The script has been modified slightly to understand the german "üäöß" special letters.
The basic setup is working. Next step will be a wifi stick to let it run wireless in the shopwindow.
One question still needs to be solved:
what keyword(s) should it react on?

hmmm. I'll post some pictures soon





webdoctor
TwitterMatrixTicker using a Raspberry Pi and an old Matrix Printer 
29.3.13, 11:52 - Linux
gepostet von web doc
hahah what a great fun:
imagine an old Matrix printer connected to your Raspberry Pi, printing out tweets for you instantly...



Sounds easy? well, not _that_ easy...
First of all I connected my RPi to the old Citizen 120D Matrix printer, finding out that the micro computer does not recognize it as printer. bummer...
A quick search told me that its a missing module named usblp.ko. And the worst thing is: you need to crosscompile your kernel in order to get this Module
I followed the instructions on elinux: http://elinux.org/Rpi_kernel_compilation. It took the whole evening to download all tools, kerneal sources and to compile the thing.

ok ... Today, very early i got to install and boot the kernel and the module and tried to run the TwitterMatrixTicker script i found ( http://blog.thelifeofkenneth.com/2012/0 ... tweet.html ) to output the twittersearch for my login direct on the printer.
guess: not working: the device /dev/usb/lp0 needs to be chmodded
so i did sudo chmod 666 /dev/usb/lp0 and .....
tadaaaa ... a first hello appeared after echo hello >/dev/usb/lp0

thats it...

now i can use it in my showcase in Frankfurt to attract people ;)


p.s. I have problems initializing the printer. the USB-Parallel port device is messing around with the old printer on startup. to use it, disconnect it, send a file to the printer, connect it and then its working...

now c'mon and twitter to @masterhit
windows port of gphoto2 
18.3.13, 17:42 - Linux
gepostet von web doc
sadly the weather is not mindblowing, so i still have some spare time to tinker a bit with my toys.
a cheap nikon here in my office shall be used with gphoto2 to make a timelapse film.
all my linux pcs are @home, so i needed a windows port of gphoto2 (it's a remote control tool for nearly any digital camera)

my first guess was just to install cygwin and have a package called gphoto, but ... möööööp ... no.
so back to basic: i learned how to compile stuff on my own sind sshd on my 486 ;)
unimaginable boatloads of dependencies are waiting for you if you try to compile gphoto2, but i made it.
sadly libusb-win32 didn't initialize my camera, but some guys already had this probblem:

Download the latest binary version of libusb-win32 from here http://sourceforge.net/projects/libusb-win32/, unzip it somewhere, and run ./bin/inf-wizard.exe, select your camera and when you're finished click the "Install" button.

this worked, and i even found a precompiled (older) version of gphoto... so if you di not want to go to alllll the way through the compile sh** just take a closer lokok on this site:
https://code.google.com/p/scan-manager/downloads/detail?name=gphoto-2.4.14-win32-build2.zip&can=2&q=


and finally i am able to remotely control my camera with a windows pc..

yeah!


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