Digital DawgPound

Update: See also RFID Enabling Your Front Door (with a Parallax BASIC Stamp & 13.5 MHz APSX RW-210)
How I RFID enabled my front door with a Parallax RFID reader, a TTL serial to Ethernet module, and some custom C# .net code.
There are a number of options available for RFID front door projects. RFID Toys [...]

I recently had the need to connect a purchased electronics module which has a 2400 baud Serial TTL level (output only) interface to a PC’s serial port (difference between them is voltage levels). I could have just bought a converter, such as the "RS232 Serial Interface Module", but thought I would have a [...]

Recently I have been photographing various electronics items for the blog, and other projects. In an attempt to make them look more professional, I have been trying different techniques to remove the backgrounds. These have included Photoshop’s ‘Magic Wand’, ‘Rectangular Marquee’, and ‘Magnetic Lasso’ tools, among others. These work to some extent, [...]

Old Skool Phreak recently published a new article which mentioned the free ICH Uplink Skype to SIP Adapter that is meant to connect your Skype client to a SIP server. I tried to get it working with Asterisk - after placing a call to Skype, it will connect to Asterisk, which will successfully answer [...]

Original Post: Using a Radiosonde as a real time, low cost GPS based tracking device

Thanks to Hack A Day and those that left comments, many useful ideas / suggestions were received along with some offers of support and a promising looking solution.

Here follows a roundup of the more informative comments:
Wizdom points out that if you [...]

A Radiosonde is a small package of electronics used in weather balloons by Meteorologist’s to measure pressure, altitude, wind speed, and humidity. They are mass produced, rarely recovered after use, and fairly low cost devices (~£20 on eBay / Bullnet (non GPS model).
After being launched the Radiosonde works by continuously transmitting back readings to [...]

I have been hearing bits and pieces about RFID technology for a while, but it now seems that it has evolved to a point where kits are available to the amateur electronics hobbyist at an affordable price.
Most recently Kn1ghtl0rd, and Lowtek Mystik, did a T.W.A.T Radio episode on RFID, and Make Magazine Volume 6 had [...]

After being aware of it for a while I finally decided to subscribe to the electronic edition of Make Magazine at the cost of $26.95 for a year (4 Volumes).
I was not disappointed. Volume 6 was a just shy of 200 pages and featured articles on:

Robotics projects you can make yourself including an IR [...]

I have recently been seeing quite a few attacks for old PHP based vulnerabilities showing up in my logs:

Mambo "GLOBALS['mosConfig_absolute_path']" File Inclusion
PHP-Nuke "phpbb_root_path" Arbitrary File Inclusion
WebCalendar "includedir" Arbitrary File Inclusion Vulnerability

I therefore decided to look at them closer, and coded up a php script that mimics falling for the attack, and downloads a copy of [...]

Someone recently asked me about adding search capabilities to a small, simple static html based site.
There are a number of options available. The most obvious of which is perhaps just to just link to Google with the “site:” option, slightly messy but it works. There is however a better way, which is to [...]