Posts from 2013-06

Reliable System to Switch a PC on / off Remotely

This subject is sometimes also called lights out management (LOM).

The Goal

To switch your computer (or any other hardware) on/off remotely you have a couple of options:

  1. Use hardware to cut the power of your device.
  2. Use hardware to imitate pressing the power button of your devices.
  3. Use software to log in to...

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Philips Streamium MC-i200 – Streaming Protocol

PC-Link Protocol

This is a mirror of the protocol description on

  • PC-Link Client: Streamium
  • PC-Link Server: PC

Here's an example PC-Link client server interaction (note that the HTML headers have been omitted):

1) Client sends the following UDP broadcast on port 42591:


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wsgi-request-logger - Logging HTTP Requests With Any WSGI Web Application like Flask, Bottle or Django

I like WSGI (micro-)frameworks like Bottle, Flask or Django and used them for a couple of web applications so far. One thing that I wasn't able to do properly was request logging. It either wasn't in a format I liked, was dependend on the server implementation of WSGI...

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Disable spotlight indexing on Mac OS X

Here are my notes on disabling spotlight indexing (temporarily). I need this sometimes, for example when copying large contents of a disk to a different volume. When that disk is connected to the Mac, it directly starts indexing and that is really annoying because it slows down the file transfer...

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Logging Requests With Bottle Web Applications

Please note that I gave up on this project and started the more generic wsgi-request-logger instead. See this post.

The reasons to do so, are as follows:

  • A bottle plugin is not being called when a non-existent route (404) being hit.
  • A bottle plugin has problems with 500 server errors. It...

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Software I Install Right After Flashing A Bleading Edge OpenWrt trunk Version

Here are a couple of packages I install whenever I upgrade to a new trunk version of OpenWrt. I do this because the ability to install all those packages will only last for a couple of days until there will be a new trunk version with a different kernel. So...

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Using the Raspberry Pi Camera Board on Arch Linux ARM

Update 2014-01-14: There is now a completely Python-based camera-interface for you to work with: picamera


Add /opt/vc/bin to your $PATH:

# To add /opt/vc/bin temporarily to your $PATH:

and set up your /boot/config.txt to contain the following:


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OpenWrt on a TP-Link TL-WDR4900 Router

The TL-WDR4900 is a Gigabit router made by the Chinese network equipment producer TP-Link.

Hardware Information

CPU Flash RAM Network WAN USB Serial
P1014 16MB 128MB 4x1 GigE 1x1 GigE x2 v2.0 Yes

The most important chips:

  • CPU: Freescale Semiconductor P1014
  • Switch: Atheros AR8327N
  • WiFi:
    • 2.4 GHz: Atheros AR9381
    • 5 GHz: Atheros AR9580

The power supply of this device has...

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WiFi Adapter "Siemens Gigaset USB Adapter 54" on Arch Linux ARM / Raspberry Pi

I have the Siemens Gigaset USB Adapter 54 v2 with a Prism54 chipset. It has the USB vendor/product ID 083a:4521:

Bus 001 Device 008: ID 083a:4521 Accton Technology Corp. Siemens S30863-<span...

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