For a contest to get to space center in USA I developed a game called "Puzzle of planets" in like two weeks. It is a simple game where you have to put together peaces of planets, after you complete the puzzle, it shows you information about the planet, like when it was discovered, how big it is and other intersting facts.
Again one of my unfinished projects. Basically what I wanted to make is a smart room where I can control the music and light in the room wirelessly through web interface. Not only that, my vision was that there would be a built in embedded system in the wall, so I made a light weight stand alone app as well.
This was a sub project when I was making the robot. I made an LED snowflake just before christmas. It consists of 37 ultra bright LEDs which can be individually controlled. Again I'm using 74hc595.
7 segment display controller
Of course this is not as impressive as line follower, but to get to the line follower I had to do simlpper tasks, like this one. Basically this little device helped me to debug and check the values from sensors.
Line follower robot
This was one of the most valuable projects I've ever done. Basically, because of this project I really got interested in electronics and learned all the basics about micro-controllers and other cool stuff.