Mixed bunch of computer, Linux, programming, photography, wine making, food, recumbent biking, general DIY hacking and other random stuff.
Sunday, September 4, 2011
Taking apart a disposable camera
Wednesday, July 13, 2011
Linux driver for old serial Wacom tablets (Intuos and Intuos2)
Now, support for old serial Wacom tablets was dropped from xf86-input-wacom quite some time ago due to a large refactoring and the lack of developer resources to keep this part of the code maintained.
However, literally only a couple of days ago, an initial driver was released by Julian (tokenrove) that supports old serial protocol IV tablets. Right now it has tested support for Digitizer II tablets, and it should also (untested as of yet) support Cintiq, Cintiq2, Penpartner and Graphire serial tablets. The initial announcement and code can be found here.
I created a fork of this driver to implement support for my (protocol V) Intuos tablet. Currently, all features are implemented and working (pen and eraser movement, pressure, tilt; mouse movement and buttons). The driver is still a work-in-progress at the time of writing, but it should already be sufficiently stable and functional for every day use with an Intuos tablet.
I still need testers with an Intuos2 tablet to test that part of the code and/or testers with an Intuos tablet with extra tools (eg airbrush, ...).
The code can be found at my github repository wacom_serial5. Development discussions can be followed in this thread on the ubuntu forums and the linuxwacom-devel mailing list.
Monday, July 4, 2011
DIY reverse ring for macro photography
- I did not have an M42 body cap and
- the extension tube is made of metal, whereas pretty much all body caps are plastic -- this is a plus!
Saturday, February 19, 2011
Recovering photos with extundelete and PhotoRec using a Puppy Linux live USB stick
Friday, January 7, 2011
Extreme contrast and skin detail using unsharp mask
Note: this one only really works in full resolution. Click for the full res image (hosted on deviantArt).
This was shot with self timer on a tripod with my old modified strobe in my right hand. I found the harsh lighting, desaturation and steep, dark contrast very fitting. A more in-depth view of how I got such contrast and skin-details (with the regular kit lens) after the jump!
Tuesday, January 4, 2011
When rsyncs go wrong
The directory structure is very simple, I've set it up as
yyyy/mm/dd-short-description-of-shoot
with yyyy the year, mm the month and dd the day of the month.
After having done some editing in the current month on my laptop, I wanted to sync it to my desktop.
I have a small script that uses rsync to synchronize the current working directory from my laptop to my desktop. I had deleted some bad photo's and obviously wanted them removed from the desktop as well. So I gave the script the --delete flag, which it handed over to rsync.
I ran the script and was greeted by screenfulls of lines saying deleted xxx or yyy. Hmm, I didn't delete that much pictures. I glance at the files that are being deleted, hmm, wait a minute, those aren't the right ... AAAAAH!
^C^C^C^C^C^C^C^C^C^C^C^C^C
FUUUUUCK! I'm bashing CTRL-C for my life here! Finally it kills itself and gives me a shell prompt. I look at the current working directory:
2010/
That should of course have been
2010/12/
And as I said, I don't have a full mirror of all the photos on my laptop (not enough hard disk space there), so it started pruning all the older ones from my desktop. Ouch.
I've shut down the desktop asap and haven't booted it since. I'm probably going to try my luck with extundelete after the exams. Fingers crossed.
TL;DR Be careful with the --delete flag in rsync. It will fuck you up sooner or later!