I had a very strange problem in my home network: some wired hosts did not get an IP address from my wireless router. After some sniffing with Wireshark, I concluded that this problem only occurred with hosts that were connected to my D-Link DGS-1500-20 gigabit Ethernet switch. Hosts that were connected to my wireless router received an IP address via DHCP without any problem.
I did not find any settings in the DGS-1500 that could fix this problem and even a factory reset (pushing the reset button) did not fix it. Eventually I was able to fix this problem by updating the stock firmware 1.00.013 to version 2.51.005!
The Cisco SPA112 is an Analogue Telephone Adapter, you can configure this device to enable internet telephony (VoIP) for up to two analogue telephones.
After plugging in the power, ethernet cable and analogue telephone, you can check the DHCP status of your internet (Wi-Fi) router for the IP-address of the SPA112. I actually used the Network Discovery Android app to discover the device on my home network.
You can download YouTube videos with the NetVideoHunter Firefox add-on. After installing the add-on, you can download a YouTube video by clicking the icon.
By default the add-on downloads the best available quality from YouTube, that is very convenient.
The downloaded file has an mp4 extension. Using the libav command line tool avconv, you can extract the audio without transcoding. This way the process is very fast and the audio quality remains the same:
Normally the ends of shoelaces are protected with plastic caps to prevent them from fraying, but they sometimes break and get loose. Once the ends of shoelaces start fraying, it is very hard to put them through the tiny holes of your shoes. This is an easy fix:
Get some glue, the right size of heat shrink tubing and a heat gun (or a lighter)
Put a little amount of glue on your finger and wet the ends of the fraying shoelaces with it.
Cut a suitable length of heat shrink tubing and shove it over the end of the fraying shoelace.
In the nineties I built a class A power amplifier based on an article in the November 1985 edition of the Dutch electronics magazine Radio Bulletin. In 2000 I reproduced the article on my web site and added photos and extra schematics for a stabilized power supply for the preamp stage. Although some of the components are probably not available and the original website is long gone (archived on the WayBackMachine), I found it useful to repost the Dutch article: Klasse A-versterker van 20 Watt
I am a huge fan of SomaFM. I Have been listening to this listener-supported, commercial-free Internet-only streaming music station for years.
I do no only use my xbmc on Raspberry Pi (OpenElec) to watch movies, I regularly listen to music as well. So how can we add the wonderful ambient, jazz, loungy or indie tunes of SomaFM to xbmc? A quick search pointed to https://github.com/nils-werner/xbmc-somafm, but my OpenELEC lacked the git command.
Reluctant to install git on OpenELEC just for this, I performed this workaround
I first installed git with the default package manager on my Linux Destop (Synaptic on Debian)
Every time Ubuntu updates installs a new Linux kernel, your VirtualBox is likely to be broken. I got these error when starting my virtual machine:
The virtual machine 'xxx' has terminated unexpectedly during startup with exit code 1.
Kernel driver not installed (rc=-1908)
The VirtualBox Linux kernel driver (vboxdrv) is either not loaded or there is a permission problem with /dev/vboxdrv. Please reinstall the kernel module by executing
as root. If it is available in your distribution, you should install the DKMS package first. This package keeps track of Linux kernel changes and recompiles the vboxdrv kernel module if necessary.