Lego Mindstorms NXT: Lego Pong with NXTCam

Final Year University Project.
A lego mindstorms robot that can play pong using the NXTCam to track the ball from mindsensors. The light sensor is also used to track black,grey and white to avoid slamming into the walls. Programmed in Java using leJOS.
This is the bot playing against itself for demo purposes.
Can play against a human controlled RCX also.(Robot tends to win though :) )

I got an 80% mark for this project.

Wayne Mac Adams

Category:

Science & Technology

Tags:

• Lego
• NXT
• Mindstorms
• NXTCam
• Lejos
• Robots
• Robotics
• Programming
• Software
• Pong
• Project

[sangsangIF]

I have a question! why did you use that color sensor?

[wayneage]

Its used so that the robot can tell when its close to the wall(ultrasonic wasn't accurate enough), to avoid slamming into it! It slows down on grey and stops on black, it also uses the black to reset its tachometer, which is useful only in 2 player mode.

[braymasta]

make 2 and make them have a pong-duel

[wayneage]

Alass I only had one NXT! However there is a human controlled 2nd robot(RCX0 and they can duel, I plan on putting up the video when I can but I'm quite busy this summer...

[Ryainad]

It is cool!!! I like it!!!

[Hampsterman4]

@pranavtrehun007 NXTCam. It says so in both the title and the description. Ignorant juicebag.

[robvadeberg]

You have to make 2 of them and let them play it together!!! :D

[tiki820]

inpresionante, fantastic.

[pranavtrehun007]

what did ur professors think about using a LEGO NXT for a senior design project?

coz some ppl have a prejudice against using LEGO NXT as they think it is high school stuff. and they might not take the project as seriously.

btw, cool project. r u using pure reactive AI or some prediction algorithms to intercept the ball?

[poopkart]

i have the peices just not the motivation kinda frusterating

[BenedictHeyer]

Hey! I'm really interested in your project! I sent you a PM. Please respond! Thanks!

[sangsangIF]

i'm so appreciate for your kind answer. I tried to geared up and make that robot. But it joggles. So I make a pong-duel robot in a diffrent way. Thanks. your answer comes in pretty handy

[wayneage]

Hey, realllly sorry for not reaplying sooner..been quite busy with work! I *hope* to maybe make a website with more info/source code etc in the next few months if I get the time. But for now, yes it is a motor, which is geared up quite a lot, it uses a bar with 3-4 angled technic pieces that hit the ball much like a spinning leg! Because the motor is geared up so much to get the speed, it is not very powerful, the ball seen in this video is a ping pong ball!