Recent Posts

Expanding the NXT with the PCF8574A

The Mindstorms NXT is great, no doubt.  However, sometimes you’d like to be able connect non-Lego items to it.  The NXT’s ability to talk I2C, the industry standard protocol for interfacing electronic devices makes this an easy to achieve goal.  Since this was my first time hooking up anything non-Lego to my NXT, you can imagine my hesitation.  I procured ... Read More »

Determining Object Distance with Infrared

Next Saturday (21 July 2008 ) I am giving a presentation on the Parallax Propeller microcontroller and I thought it would be a nice idea to demo some things with it.  I have a Propeller Education Kit (PEK) and a Propeller Proto Board (PPB), kindly donated to me by Parallax.  The PEK is awesome for learning how to use the ... Read More »


My current project, well, the one I seem to be spending the most time on is a robot called A-Maze-Ing. It is based on a Lego Mindstorms NXT brick. This robot is, or rather, will be, a line-maze solving robot. The first challenge in building this robot was its size. Rules dictate the robot should not exceed 15x15x15 cm at ... Read More »

It’s been a long time since my last confession

It seems it’s been years since I last blogged anything.  I used to run a blog at but I guess I ran out of ideas to post about.  This blog’s title is a good summation of what I think about when I am at work or doing something I’m not really enjoying. I’ve been building robots for a little ... Read More »