Amazing!
I am also a Robocup junior soccer competitor!
And I love that the you put up everything to be open source, if only there were more teams like you!
I am planning on going to robocup2013 in holland, will you guys be participating this year?
Anyways, I hopefully will do the same with my robot once it's done.
One question, you said you used the TSOP1140?
I am currently experimenting with the TSOP1138, but I am having tons of trouble with the viewing angles.
Did you use anything to shield the sensors viewing angle?
Also, what kind of components did you use for the light barrier?
Best Regards