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Maze-Solving Robot

March 6th, 2008

For the past couple of weeks I have been trying to get a little robot to solve a maze, were the walls are marked off with red tape.  I came up with the basic design for the robot, but some others worked on it too.  (Thanks a LOT to Tim for coming up with the best solution for the back wheel.)  The robot is just two wheels with a camera on the front.  The “brain” is a Game Boy Advance with a big XBC for a game cartridge.

The code, though, that’s all me, baby!

This is the first day when it has actually worked.  I’m still going to tidy up the code, take out some debug statements, and tweak some values to make the thing go faster and more smoothly.  This is all very fun for me. :-)

 Edit, March 15, 2008:

I finished the project and made this post.

FRI Version 1.1.0.0

March 4th, 2008

  • New Feature: Ability to edit ROM platform, language, maximum number of players, title, and notes
  • Tweak: the code for editing a ROM’s rating was re-written to match the same method as editing the platform, language, etc.
  • Tweak:  .a26 is added as a unique file extension for Atari 2600 ROMs in the default Platform Vocabulary
  • Tweak: "JAG" and "J64" extensions for the Atari Jaguar were re-written as "jag" and "j64" in the default .Platform Vocabulary in order to be lower case like all of the other extensions.
  • Tweak: Now the "Help" button goes leads to "http://redirect.somewhatgeeky.com?token=friHelpButton", which is a redirection page that allows me to change the final destination outside of FRI.
  • Tweak: Right-clicking on nothing in the ROM list no longer brings up the list of options.

fri_version_1.1.0.0

Also note that FRI supports editing the information of ROMs in bulk.  Just select more than one before you right-click.

Also, I was talking with a friend about FRI, and he brought up an interesting point.  Previously I pronounced the FRI "fry", but he thought it was pronounced "free", which makes more sense to me.  Now FRI, the Fantastic Rom Indexer, is pronounced "free".

Download it here

Fixing that Weird Photo Gallery Error

March 1st, 2008

,"This Photo can’t be saved because of a problem with the photo’s file properties."
This Photo can't be saved because of a problem with the photo's file properties.

That’s the most obnoxious error message ever, and I have gotten it for a lot of my photos.  One cause is the file not being the right format, like PNG.  The problem was that these files are just as the are supposed to be: JPEG’s right off my camera.  The symptom of this problem is that I can not touch up the photos in Photo Gallery.  Worse, though, is that tags aren’t written to their respective picture files.  I can still tag photos, and Photo Gallery will remember them, but since it doesn’t save the tags to the file, when I take the photos to another computer, or re-install the operating system on my desktop computer, the tags are forgotten.  That means that hours of inputting who is in each picture, at what event the picture was taken in, and other keywords, could all be un-done.  Needless to say, I wanted to get this error fixed.

The solution?  Open up the problem files en mass in Paint.NET and re-save them all.  I was afraid that doing so would mess up the other file properties, especially the "Date Created" property, but it seems that Paint.NET preserves them all.

So that’s the solution!

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