If you do not own thousands of parts to build JohnNXT, you could try this smaller yet very funny version. It features two moving treads and a cannon that can aim and shoot.

Mini JohnNXT can roam using the ultrasonic sensor, react to sounds, follow lines on the ground, or can be completely remote controlled, using the Bluetooth remote from my book.

It can be built with a NXT retail set, plus an arrow, a cannon, two zamor magazines, many tread links and six black sprockets.

The motor in the upper body acts in two ways: turning in one direction, the latch gear will engage the mechanism that changes the cannon raising, while turning in the other, it will push the trigger to shoot.

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Download:

Click on the yellow logo to download the building instructions and programs for mini J5.

After answering a simple riddle about "Creating Cool MINDSTORMS NXT Robots",

you will get the archive (you must have cookies enabled for this site).