Well even though this is not an NXT Creation I think it is still awesome. As most of you know NXTLiftBoy has made several really cool creations. You can check them out over at MOCpages Here.
Here is what he has to say about it:
The ChainRider is a trike featuring two huge wheels, remote control, and, i dare say, excellent drive properties. It is made entirely from a single LEGO set 8275, but appears to be much more fun in playing than the bulldozer!
Here is a pretty cool project that Sascha from Germany Sent me.
Here is the information from Sascha:
“This is the Lego NXT “4 In A Row” robot project.
This robot is able to play against you on itself.
He is independend of any computer, so the program - programmed with NXC - is running on the NXT brick.
The human player can choose the row while pushing the touch sensor as often as the row’s number. The computer decides on its own, which row would be the best for it.
This KI is working mainly on the MINIMAX algorithm. However the computer is not as hard as i want him to be, because of the less NXT Brick speed.
the algorithm works like that: The computer simulates the next 3 possible steps and gives any game situation a specific number of points. The Row with the most points will be the next computers choice.
The robot uses three NXT motors:
- one is moving the gameboard
- the second fixes the stones
- the third opens the gate”
Hi guys, I’m a new contributor and for my first post I’m going to post my latest project, “Lonesome George”. It’s named after a turtle on the Galapagos Islands. Lonesome George drives (not walks) forwards and backwards (but it doesn’t turn). Its shell is made of cardboard but it’s still entirely LEGO because the box is made by LEGO! When it sees something it will go into its shell and pull the ultrasonic sensor down.
After Building a light box to take better photos out of PVC Pipe, I had a Bit of excess pipe laying around so I got to thinking, What if I could build something that could move along over a pipe with ease.
So that is when I got to thinking, I needed 8 wheels, 4 on each side so that it has enough traction to move along the pipe under a heavy load. After I had built the prototype I figured out that it was going to be difficult to power all of the wheels with just one motor.
At first I tried chains but found out that wouldn’t be strong enough, and would be very easy to do in the first place. This is mostly because the wheels on each half turn different directions.
To be able to get them to turn like this I was lucky enough that the distance was perfect so I could use the right amount of gears. To turn the wheels different directions as shown above. From what I had to work with I came up with this design:
When I was done getting the Moving part of things done, I worked on the lifting mechanism. After several attempts to get the perfect ratio on the gears from the motor to the drum where the string is wound onto I moved onto the pulley system.
After Building and testing Pipe Runner on the small Test piece of pipe I had and deciding that it would work good enough, I decided that I would then go ahead and build the pipe structure to be able to run on. I started simple, but then realized that I needed somthing more stable so i added more pipe to sections to make it stronger.
Due to the strength of the PVC pipe Pipe Runner is only able to lift about 5 Pounds. That is my only disappointment with it. If I ever decide to make another one similar I will either use metal pipe or enforce the current one. Other than the pipe not holding very much I believe that Pipe Runner Works very well and I like how it turned out.
I used the Mindsensors.com Sony Playstation 2 Controller interface to control it in the video. Programming anything to be extreamly accurate with string is very hard due to the string winding up on the spool different ways every time. Using the PS2 Sensor makes hooking very simple and easy.
Please feel free to post any questions, comments, improvements or if you need help with the Pipe Crawler at the Forum. Click Below:
Downloads:
Top
This is the Top of Pipe Runner. You will need to attach the bottom part to it as shown in the pictures below.
Bottom
This is the Bottom of Pipe Runner. You will need to attach it to the top as shown in the pictures below.
Side
This is the Side of Pipe Runner. You will need to build 2 of these and attach them to the top part on each side as shown in the pictures below.
Program
This is the Program for Pipe Runner. It uses various Buttons and the analog stick to move and operate the functions.
Giganto is a joint effor of several people I know and me. It uses two XL PF motors, several NXT motors, and two NXTs. This is it’s second version, and while it is still not THAT big it’s alot bigger than many robots I have built so far. See more of it on NXTLog Here:
And by the way, the Lego Technic Bulldozer I bought came in the mail today, so some of my upcoming projects are going to have a obvious size difference than my old ones!
Alpha Rex can’t be the only biped you’ll ever make, so we’re asking you to create the NXT two legged walker!
Bipeds are said to be the most difficult robot to make, but we know NXTLOGgers are up for the challenge!
All entries to NXTLOG fall under the Terms of Service
Entries must be submitted from Saturday March 1, 2008 - Monday March 31, 2008
All entries must be tagged “NXT200803″
Only LEGO elements may be used.
There is no limit on the amount of LEGO MINDSTORMS NXT sensors, motors, NXT programmable bricks, HiTechnic sensors, or Bluetooth communication. No home brewed sensors allowed.
A programmable LEGO MINDSTORMS NXT brick must be onboard the robot and must control the robot’s actions.
The NXT robot must be a robot that can take still pictures with a camera and you must explain how the robot is a “Biped” robot in your NXTLOG documentation.”
This is the first creation that I have made that has rack and pinion steering. I wanted it to have all wheel drive but I don’t have the necessary parts to do it. All four rear wheels do turn and both have a differential drive. Overall I was disappointed in this project because it needs suspension and to be geared down. If it goes sideways up something the wheels just spin with the differential drive. It is way underpowered having a 1:1 ratio, it really needs a 3:1 ratio to be able to climb up anything. I will make something similar in the future that will hopefully be better and stronger.
Please feel free to post any questions, comments, improvements or if you need help with Truck #1 at the Forum. Click Below:
This is a sturdy little robot that I made a while ago that can get over anything. Well, not exactly, but it can get over dictionaries! It has 4 treads that can pivot freely, enabling it to have great traction when driving over books etc. Here’s the movie:
Here it is… my latest creation worth publishing! It’s a sumo bot that was for the NXTLOG sumo challenge that as usual I missed due to the deadline being a couple months before I made this. Oh well, at least I can still post it here! So, pretty much what’s cool about it is traction. It has 6 wheels that give it awesome traction. The only disadvantage is that it drives kind of slowly, but if it collides with the opponent boy are they going down! The program isn’t really worth posting because it just has the robot stay on the table. There is no ultrasonic sensor to seek the opponent because due to limited space in my LEGO room (AKA bedroom) It would detect my dresser and attack it Pictures here.
Pictures 
