complex systems for robots

today, we tried to move a "rock" across "mars" into a designated spot using the lego robots. we programmed them to go forard for about 4 secods and then turn, it took a long time to get it even close to the area we were supposed to be, but fit was hard, finally we got about an inch away from it. It was really col to see how we could actuall contorl the robots to do really cool things. it was hard, but once we got the hang of it, it was pretty easy. i never realozed how mucha robot could do, play music, move objets, turn, reverse,pick stuff up.....