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LEGO models my own creation MOCpages toys shop NXTLiftBoy
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NXTLiftBoy
About this creation
See YouTube NXTLiftBoy for the model in action!

MODEL
Apart from the technic pallet with the V10, visible on YouTube the NXTLiftBoy was made from a single NXT set (= all i have :)
I spent several evenings over several weeks to construct it. I started with a solid fork and a mast that fitted the fork. I dreamt of a mast in parts (telescopic), but thought that that would be too much to ask for. Wanting the brick as a counterweight, it took a while before i gave it the simultaneous functions of weight, backward extension and pivot wheel support. Particularly the pivot wheel was a pain. The big rotating disc/wheel in the set had too much friction, so the wheel wouldn't follow but, at times, even make the model bump around. A single tyre would give it a too narrow base, so it tumbled over when turning at high speed. Two tyres required the split axis, not visible from the outside. At one time, i even used a blue ball in a cage instead of the pivoting wheels i ended up with now. The ball worked well but didn't have the looks...and the red ball neither ;)
After getting the pivoting wheel right, i added the cabin, chair and mirror from the remaining parts. To my taste, the cabin and brick ended up too high, maybe i'll have an attempt at a redesign/makeover, suggestions are welcome.

SOFTWARE
Inspired by BricxCC, and using the iCommand library, i created a Java program that enabled me to control it wirelessly with the mouse. The mouse is inside a control plane, at the center nothing happens. Moving the mouse up/down makes the NXT move forward/backward. Vertical position in the plane determines speed. Left/right position of the mouse in the plane determines the curve the NXT makes. At the edges it turns on the spot. In the center it drives straight. Halfway the edges it turns around one of its wheels.
There are 200x200=40000 different ways to drive the NXT, it is a proportional controller!
It sends an update every 20 milliseconds to the NXT, but only if there is a change, to save batteries.
Left/Right-clicking the mouse makes the fork go up/down. The fork has 'auto-accelerate', meaning that upon click-and-holding the button, it increases fork speed from 0 to 100 in about half a second. This way you get the speed without losing precision in maneuvering.
Double-clicking the mouse in the control plane (de)activates driving. If the mouse leaves the plane the motors are stopped too. The software has radio buttons to configure the motors wiring and orientation.

Even with the custom software, it is a real challenge to get used to the controls and operate the forklift as a pro!

The software is not ready to be redistributed, working on that, but don't hold your breath for it.

INSTRUCTIONS
It appears my upload to brickshelf failed (not sure, first time user), so i am happy to use MOCPages instead, but i fail to see how i would upload the 250 step-by-step pictures to build the model here?



Comments

 I like it 
  February 28, 2010
plz can u put a downlaod link for the joystick application and also the mouse application plz
 I made it 
  August 4, 2009
Oops! I now realise there is only a link to instructions from my home page! As a slideshow, please find the instructions here: http://s186.photobucket.com/albums/x249/NXTLiftBoy/?albumview=slideshow I surely hope you have not been waiting all that time for it... My homepage provides a nice overview of my MOCs: http://www.mocpages.com/home.php/7926 Happy building and playing!
Quoting austin chick Love the robot! I was just wondering where you were going to post the instructions?
 I like it 
  August 1, 2009
Love the robot! I was just wondering where you were going to post the instructions?
 I made it 
  July 26, 2009
I wrote a Java application, so no Javascript.
Quoting Arnau Albā for the program did you use Java or JavaScript?
 I like it 
  July 5, 2009
for the program did you use Java or JavaScript?
 I made it 
  January 12, 2009
Thanks, nxtasy is a nice site indeed. If you like nxtasy, you should also check out thenxtstep!
Quoting min6272 cat I found a mindstorms nxt (one nxt) twistcar which moves forward an one motor(a casterwheel which turns and that is what makes it move) the site is www.nxtasy.org.com
  December 30, 2008
I have found a mindstorms nxt (one nxt) twistcar which moves forward an one motor(a casterwheel which turns and that is what makes it move) the site is www.nxtasy.org.com
 I like it 
  July 28, 2007
That's awesome!
 I like it 
  July 28, 2007
Quite good
 I like it 
  July 28, 2007
Furious! caan it really lift?
 
By NXT Liftboy
Add to my favorite builders

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people like this. See who.

5,140 visitors
10 comments
Added July 28, 2007
 


LEGO models my own creation MOCpages toys shop NXTLiftBoy


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