Question 1: What was the general strategy or plan behind your bot design?

Well, I just used my last built robot with a slight modification: I added the light sensor facedown in the front of the robot and disconected the rotation sensors. I also added a tail for balance.

Question 2: What technologies/mechanisms did you use?

I've built a robot that balances on 2 canted wheels. It's a basic differential drive without the caster. Cool, but not fast enough.

Question 3: What was the most challenging aspect of construction?

The program. I am a beginer in programing and it looks that I have started with a too sophisticated language: LeJOS. I have tryed to translate a program writen in NQC but I got too many errors and didn't finish it on time. So I had to use an ad-hoc program writen in Lego and it wasn't optimised.

Question 4: Are there any special features you care to talk about?

The original purpose of the bot was to navigate using rotation sensors and map the room, then go to the tower and download it on the computer. It used IR proximity and motor stall for object detection.

Question 5: What surprised you about how your bot behaved/performed during the event?

I was so happy it worked without balancing too much and I knew that it could have been competitive with some minor software and hardware modifications. I will do them for the next line following event.