Feb 16, 2008

NXT Beam Weapon

Last week I decided to try making an NXT gun using the spinning wheels concept, since the NXT motors are more powerful than the RCX ones and can therefore spin the wheels faster. It came out pretty good... it can shoot 1*5 beams (hence the name, "Beam" Weapon :P ) over 23 feet. The magazine has a capacity of 10 beams, and can shoot single or rapid fire.

Below is a video of the gun in action... a touch sensor is used for the trigger, and a motor pushes a beam into the wheels to launch it.

video

-Jonathan

14 comments:

Anonymous said...

Aw, kid, you'll put your eye out ;)

Jim Kelly said...

I like it... nice use of gearing, too.

Just don't put your eye out, Jonathan... kidding. (Nice use of movie quote, anon!)

Jim

NXTMonger said...

Nice project, Jonathan...
On my shooter I was going to use those beams as projectiles too... Until I used them all up in it's construction!

-NXTMonger

Jonathan Daudelin said...

lol... actually it doesn't hurt even at point blank range, although it could probably demolish a LEGO structure pretty well.

My original goal with this project was to mount the gun on a rover and program it such that I could control it via the key board (move around, move the gun up and down, shoot, etc.)... unfortunately the gun turned out too big for that, so I'm moving on to something else.

-Jonathan

Rick Rhodes said...

A most excellent shooter, Jonathan!

Rick

Anonymous said...

great job !
can you prepare build instructions ?

Anonymous said...

Man, I like your robot and your cool idea! =D I happen to have an nxt myself and I was wondering if you can post the instructions on the web. [ Its okay if you want to keep it a secret recipe. =) ]

Jonathan Daudelin said...

Alright, I'll make some up if I get the time... it might take a little while, though.

-Jonathan

Anonymous said...

Thanks man! We will appreciate the instructions (Though I'm not sure my sister will, muhahaha. =D)

How many projectiles does it hold?
=)

-Pie nxt

Anonymous said...

Oh okay it holds 10, I read it again=D

-Pie nxt

Anonymous said...

Great work Jonathan!! What programs does your nxt intellectual "Brain" brick use for firing?

Jonathan Daudelin said...

Anonymous,

It's just a simple NXT-G program that gradually turns the motors on full power and then fires a shot when the touch sensor is pressed. If the touch sensor is held down, it fires repeatedly. I'll post it along with the building instructions.

-Jonathan

Anonymous said...

That is the best NXT gun I've ever seen!

Christian said...

Hello
When you´re poasting your buildingstruction?
I want to build an self shooting machine :)
Christian

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