打铁趁热，把果果参加ID Tech ＵＷ机器人夏令营的日记放一篇上来。绝对货真价实的流水账，一个标点符号我都没动啊。

Written on Monday, July 23, 2012 © Eric Diary Productions

NXT Robotics & Programming

I made my robot to knock over other robots today using sensors included in Lego Mindstorms NXT Education. I used all the sensors (except the extra touch sensor).

This is the project:

Notice that the ball-hitter is on, but in the competition, I removed it because it was too much weight on one side, so there is a higher probability of tipping over to the left. Well, now William (or Will for short) and I got to work. Well, I discovered that the robot does not really go straight, so I used his light project: Project BUS. Project BUS is for the robot ‘seeing’ the track underneath the robot. It was designed by Will when he noticed that green tape does not reflect light and the ground does. Well, I thought about the program a little bit and came up with a hypothesis: to turn back and forth, the light sensor must detect a short light/no-light sequence. For that, we need green non-reflective tape. Well, the rules of the sumo contest says that you cannot put on a track that the robot (or rover) follows or avoids.  I added the sensor motor code to Project BUS, making it PATSY awesome! Now, when you press a button,  the robot says hello. If you press it again, it starts a loop that keeps checking the ultrasonic and sound sensors, plus the light sensor which was ran by Project BUS to check certain conditions and create movements, lights, and sound. In the contest, everyone had the same program, which is forward movement forever. We won the sumo because the light chassis and the accessories made the robot faster. Here’s my