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Upgradede biped Lego Mindstorms climbs stairs
posted November 9 2010 5:53.03 by Giorgos Lazaridis

A couple of months ago, 222Doc presented the first Lego Mindstorms biped robot that climbs stairs, which he called X-2. Now...

[Link: 222Doc]
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Tags: electronic project   robot   lego   

Autonomous Quad Rotacaster Omni-Bot
posted September 8 2010 16:30.14

About a month ago we presented R J McNamara's attempt to build an Omni-wheeled Bot, what that robot was lacking was the Rotacaster Omni-wheels cause the Rotacaster wheels did not existed in Lego Technics format.
Now this is changed and a new robot R J made, is equiped with 4 sets of the new wheels allowing it to move and manuever in any direction smoothly that you forget the 4x Ultrasonic Sensors to aid in navigation.
For more info here is the place to look.

[Link: rjmcnamara]
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Tags: electronic project   robot   diy   rc servo   microcontroller   lego   quadrotor   

Lego Mindstorms NXT Quadra-ped X-4 "Sloth"
posted September 2 2010 8:19.55

222Doc after building the first Lego biped to climb steps now decided to try something harder.
He builded a Quadra-ped from Lego parts that it is able to climb ladders both in vertical and horizontal orientation.
With a total of 12 motors, 8 for articulations and 4 for gripers its sure alot of work to syncronize and program everything and as the maker says its the hardest thing he's done so far.
The result worth the pain though since "Sloth" seems to climb with ease the test ladder and carry its weight around.
Another first for 222Doc since we're unaware of something similar.

[Link: 222Doc]
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Tags: robot   rc servo   lego   mechanical   

Lego NXT Mindstorms: X 2 Climbing up and down stairs
posted July 29 2010 19:44.28

About a month ago we presented 222Doc's work on making the first Lego biped to climb steps, now the maker moves a step forward the whole project and the X2 is able to climb up and down also.
The movement speed is up to 5x faster than the first X2 and the climbing down is smooth and steady. The best part is that 222Doc is working in arms and body for the X2 that will make it capable to climb ladders and be able to grab things, so stay tuned.

[Link: 222Doc]
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Tags: robot   rc servo   lego   mechanical   

internet controlled robotic arm
posted July 21 2010 21:41.22

High school students at Cornerstone Academy designed and built this robotic arm that is controlled over the Internet. This was an ambitious project for the team and they succeeded with the support from a professor and two mechanical engineering students from the University of Florida. With so many obstacles to overcome the project completed just a day before the Technology Student Association (TSA) Nationals in Baltimore.
Hard work was rewarded though since the robotic arm took first place in Electronics Research and Experimentation category, nothing less to expect from such a well build project.
You can find more photos here and complete info in the TSA Technical Report.

[Link: cornerstonerobotics]
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Tags: electronic project   robot   diy   pic   microcontroller   mechanical   research   

hexapod-tripod plotter
posted July 20 2010 19:36.14

hg5bsd build a rather interesting mix of a hexapod structure but with tripod kinematic with 3 x 2 stepper motors. The mechanics are kept simple consisting of M6 threaded shaft, RC modell universal joints and magnet ball joints, the software controlling the 6 motors is the EMC2 giving the bot a respected accuracy of ~0.1mm.
A very nice concept expressed in a very nice robot, what more to ask?

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Tags: robot   rc servo   mechanical   diy   

Development and control of Mobile Inverted Pendulum
posted July 19 2010 17:44.36

Five students from Electro-Mechanical System Design (EMSD) department of Aalborg University, Denmark made as their 8th semester project an implementation of the inverted pendulum theory.
This resulted in a vehicle capable of achieving a max speed of 8 km/h and operate up to 3h with its twin 12V batteries not to mention the fun factor provided.
The control is easy to learn even for a kid as you can see in the video but this does not deprive the needed accuracy as the measured tilt angle precision is <0,2deg.
A team effort with marvelous results and lot of fun, enjoy!

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Tags: electronic project   robot   microcontroller   battery   accelerometer   research   

posted July 15 2010 20:26.20

Andreas made a fantastic WALL-E transformable self controlled robot from Lego bricks which uses Mindstorms programming environment. As you can see in the video (apart the love story) the robot is transforming as the original one and can also move in both modes. The tracks transformation is trully amazing and even though the mechanism is not seen it must be really tough to put all that staff inside but this bot does the trick!
As far as i know and as the maker states this must be the first of its kind so enjoy it, for more pictures you can also check here.

[Link: nxtwallet]
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Tags: crazy hack   robot   diy   rc servo   microcontroller   lego   

Greek coffee robot
posted July 14 2010 19:12.19

In Greece it is common joke to ask if anything hi-tech (whether that be a phone, gadget, car etc.) can make coffee.
Well this robot is the answer to many years of joking because, yes, it can make coffee!
Dimitris Xristodoulidis is the maker of this robotic arm that is able to make traditional Greek coffee without any help, meaning it will pur water in the pot, add sugar and coffee, open the electric cooktop and after the mixture boils it will serve it for you to enjoy it.
Complete info of the project and photos can be found here but the knowledge of Greek language is required.:)

[Link: devell]
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Tags: electronic project   robot   diy   rc servo   microcontroller   mechanical   

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