Posts from 2012-03

OpenWrt on a TP-Link TL-MR3020 Router

This is a really compact and cheap router to take with you to hotels etc. to secure your internet access via VPN or redistribute a network.

The Hardware

You can get some information on the used hardware from my /proc/cpuinfo, /proc/meminfo and dmesg.

I put some photos I made of...

Read on

Behringer Xenyx 302USB

I probably bought this mixer for a somewhat different purpose compared to most people. I have active speakers connected directly to my computer sound card, and my idea was to route the sound card speaker output through this little mixer so I could have a volume and sound control on...

Read on

Installing Pulseaudio on Mac OS X 10.7 Lion via Homebrew

The following steps didn't work for me (I could compile pulseaudio but it crashed when loading Apple's Coreaudio support or it wouldn't contain CoreAudio support). So I decided to use the Solution via Soundflower and esound described below the pulseaudio section.

As long as this pull request is not part...

Read on

Generate Bind Reverse Zone File Using A Simple Python Script

When I had to create a reverse DNS zone file for my Bind name server I wanted it to be as flexible as possible and thus created a Python script that generates the Bind zone file. This makes renumbering the network really easy.

The script is available as a gist...

Read on

Behringer U-Control UCA202

The Behringer U-Control UCA202 is an inexpensive (~25 EUR) small USB sound card that I bought when my older M-Audio Transit USB wasn't working well on my Seagate GoFlex Home. I'm also planning to use it on my Buffalo WZR-HP-AG300H WiFi router. This blog post documents some of...

Read on

Sound Card Test using Linux

You can use lxsndtest on Linux based computers to test the performance and quality of your soundcard. You should read its user guide for help on installation and usage.

lxsndtest ist based on the older xsndtest (which you can compile using some hints from this build...

Read on

Migrate Existing ext3 Filesystem to ext4

The following collection of commands shows how to migrate your partition formatted with ext3 to an ext4 filesystem. The safest way is to do this when the partition is unmounted. However, if the partition to convert is where the root filesystem of your Linux distro is stored and you don't...

Read on

10 Gigabit Ethernet at Home

If you want to use 10 Gigabit Ethernet at home you have to make a choice what technology you want to use. There are about eleven different standards for 10 Gigabit Ethernet, 6 using fiber optics and about 5 for copper connections.

Products are still relatively costly though. A cheaper alternative...

Read on

Open Workbench Logic Sniffer

The Open Workbench Logic Sniffer is a great tool for everyday tasks in electronics. It is a cheap logic analyzer with software for all major operating systems. As a bonus, the hardware is open-source!


As of 2012-03-02, OLS is the most up-to-date software being updated regularly.

OLS (jawi / ols )

Jawi's Logic...

Read on

radvd – The Linux IPv6 Router Advertisement Daemon

Installation on Ubuntu / Debian:

sudo apt-get update && sudo apt-get install radvd

A typical radvd configuration file /etc/radvd.conf to advertise the prefix 2001:db8:2530:fa13::/64 for autoconfiguration on the network connected to the interface eth0 and to advertise the machine running radvd as a router for the local network (based...

Read on

Find Out Why Your Mac OS X based Computer Doesn't Sleep

Running this command will show you if there is something preventing your computer to go to go to standby automatically:

pmset -g assertions



Read on

Sony PRS-T1


CPU RAM WiFi Screen
800MHz Freescale MX50 ARMv7 256 MB Atheros AR6003 6" 800 x 600

The display in detail: A 6" E Ink Pearl with IR touch technology, 4bit greyscale color depth, 600 x 800 pixels, thus 167ppi.

I rooted my device as described in the MobileRead Wiki and I have the Android Marketplace...

Read on

Keeping SSH Tunnels Open Reliably

A (reverse) SSH tunnel can help you being reachable from outside a NATed network or behind a firewall. Keeping the tunnel open when your IP address changes or Internet connection is shaky can be taken care of by autossh. See below for the instructions.


On Ubuntu / Debian:

sudo apt-get update...

Read on