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compare your programming skills, with tetris!

Very inspiring programming demo, not because it is done in an outdated language on an simulator, but because it utilizes concepts as functions, arrays, bit masks and timers. Description in PDF Live Coding and Demo Video (MKV) Youtube Oh, and it involves TETRIS! T E T R I S!

bandwidth myth …. on hamnet wifi use

Note to myself: If anybody claims 5 MHz channels lead to higher stability, should have a look at this numbers. You need to have a good calculation of your propagation in 2.4 GHz to counter this numbers, as it is well researched. Here the Link in clear sight:

openssl for netcat use

If you ever have a need for a pipe to netcat, you might want to want to enhance your connection with encryption, here is a short example running the connection with openssl, instead of netcat. openssl s_server -cert /etc/ssl/server.crt -key /etc/ssl/private/server.pem yeah, that’s right, you need a certificate. I reused the one of my webserver. [...]

photoshop for hackers

Had this link sitting in my drafts since 2011/06/09, and since I posted something about photography today, I thought I push this one out as well. Photoshop filters are fine for creative work, but when they are included into a workflow, it gets boring, and prone to errors. So why not run image manipulation in [...]

’nuff said on photography …

I got dragged by a google result into this excellence photo know-how site run by Ken Rockwell from the States. I have no current application for this advanced know how, but I want to guide you to it, before you want to ask me about calibration, color profiles, DLSR picture digesting etc. He has some [...]

raspberry pi video streaming …

If you find your self on the receiving end of the question “how to get the raspi-cam to stream out? here is the cheat sheet. It includes the use of netcat, mplayer, vlc and gstreamer. On the device, and on the receiver.

HQ Test Videos …

In case you (like me) need a good collection of high quality test videos, just follow this link. This should help me, in case I forget again

4 parts icloud uses …

Had a quick glance over the smtp headers generated by icloud today. I noticed four things there: Oracle Communications Messaging Server 64bit X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2015-12-18_04:,, signatures=0 DHE-RSA-AES128-SHA (128/128 bits) X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 clxscore=1015 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1510270003 definitions=main-1512180176 ad 1: from the buying power, the [...]

symfony deployment check list

when you deploy a symfony application, especially if it isn’t yours, I need a check list, otherwise I tend to forget things. This one helped me: it is from 2010, but still helps, since apps don’t get younger without a deployment. After deployment, I run further checks, similar to the ones written down here: [...]