Monthly Archives: January 2011

du –exclude

if I want to do a “du” command, and want to exclude certain folders (like /mnt in my case) I would run this while at root level, in the root folder.

#du -hs –exclude=’mnt’ *

Adding remote extension to a ST-E2 Flash commander

The need to control an off camera flash came about a while back. I purchases an hotshoe extension cable (YONGNUO FC-681) which allowed me to handhold and aim the flash by hand. In itself the cable worked great, however I needed the AF assist feature that the flash provides and aligning the AF assist beam of the flash by hand is next to impossible while looking through the camera’s viewfinder.

So I bought a YONGNUO ST-E2 wireless controller for its AF assist light and in itself works great, but doesn’t control my flash very well in E-TTL mode. Further to that, since the ST-E2 control is done by optical communication, I am afraid that even if a new flash will be able to be controlled by the ST-E2, outside or otherwise dark environments with black walls there may not be much/enough light reflected to be able to trigger and communicate with flashes that are placed behind the camera.

So I decided to combine the E-TTL hotshoe extension cable with the ST-E2 controller. With this setup I get the AF assist beam of the ST-E2 and am able to E-TTL command the flash where ever it may be pointing.

Brief description of the project: I chopped off the hotshoe connector cable at one and, and soldered the wires into the ST-E2 right as they come off the hotshoe.

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Multizone Heating

I’d like to set something up for my home to better/more evenly control the temperature distribution between all my rooms.

http://diy-zoning.sourceforge.net/index.html

http://www.homeclimatecontrol.com

http://www.navitron.org.uk/forum/index.php?topic=5687.0