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Conferences 2014 not to miss

2014 January 4
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by tobi


Interesting Conferences not to miss:

I T.A.K.E:
RE/Mixed Media Festival IV:

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Running your own CardDav / CalDav Server

2014 January 4
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by tobi

For years I’ve been running my own CalDav/CardDav server to sync my Contacts, Calendars and Reminders across all my devices. I’ve been very happy with DAViCal, until recently, I had to switch to a simple vhost which doesn’t offer PostgreSQL and custom apache cfgs. So I did some research which other implementations may be useful, those are most promising ones:

Radicale (Python + Mysql)

Baïkal (PHP + Mysql)
based on SabreDav

SabreDav (PHP + Mysql)
DAV Framework,

DAViCal (PHP + PostgreSQL)
Very complete, but not that easy to install.

Apple CalendarServer:

See full list:

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2013 June 25
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by tobi

Me wants ­čÖé

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My Mountain Lion Setup 2013

2013 April 16
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by tobi

ok some time passed since I wrote my dev setup, so here”s my current one *braindump*

Main Development Setup
Mountain Lion
xCode (or latest iPhone SDK)
Ruby: rvm + rubygems + rails etc.
Database: Mysql 5.1 + Sequel Pro
OpenVPN: Tunnelblick
iTerm 2
Sublime Text 3
Git + GitX (rowanj fork)
FTP & Co: Cyberduck
Hudson status: CCMenu
Share Files: Dropbox
Google Chrome
Firefox + Firebug

Extended Development

Nice to have:
System Notification: Growl
IRC: hide join messages Adium
original Twitter client (suxx)
All Codecs: Perian
Dasboard widgets: IP + App Update
Copy&Paste History: Flycut
Word replacement: iWork
Apple Mail

## Installation hints:
Show hidden files:
Show full dir:

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EEVblog – OLED Multimeter Review

2013 March 13
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by tobi

Wow, I just discovered┬áEEVblog which has awesome video material for electronic geeks. This one will definitely help me choosing a new multimeter + its just fun to watch – stay tuuuned!

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Seriality – Physicality for the Web

2013 January 23
by tobi

Here a very late shout out to an interesting project: control your Arduino via the browser! Basically its a browser plugin to get access to your machines (virtual) serial port. With that you can use javascript to send and receive any data – how cool is that!?

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Carambola Board arrived

2012 November 28
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by admin

Yay the Carambola Board arrived today from Exp Tech. Time to start hacking!!

Good place to start with:

To start with:

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Transistor vs. MOSFet – According to Pete

2012 November 14
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oh yeah, I guess I finally got the basic difference between a Transistor and a MOSFET:

Transistor is current driven, a MOSFET via voltage! Thanks to Pete, and his fabulous SparkFun screencasts:

yieha! Watch ’em all:

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Send Mac to sleep with external screen and closing the lid (Yosemite)

2012 October 17
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by admin

I had the problem of my Mac not going into sleep when external screen is connected and closing the lid. Luckly I came across this advice which indeed, did the trick:

1. Disable external Monitor
2. Type `sudo nvram boot-args=”iog=0x0″`
3. and restart


Update: With Yosemite you need to type:

`sudo nvram boot-args=”niog=1″`


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Hack your whiteboard – and clean it quick!

2012 July 13
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by admin

For the record: Here’s my favorite realworld hack I got once told by my lovley coworker Roel:

How to clean a messy whiteboard.

Remember the situation when one used the wrong pen for the whiteboard and can’t clean it? Just take another pen which can be erased and go over the non erasable parts – suddenly everything gets clean away:

Or in the words of TvLesson:
Take another dry erase marker (preferably darker than the marks that you are trying to remove) and draw on top of the messy marks. Then wipe the marks away with a dry erase eraser or soft cloth.

The new layer of dry erase marker will lift and loosen the underlying marks. It’s simple but may not work for tougher messy marks.

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