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Steel Force Knex Coaster
posted June 29 2010 16:51.23

oneillperson is making roller coasters, not the usuall ones but from Knex parts! His latest creation is the 7th one called Steel Force and takes up a whole room!
Apart from some Lego Mindstorms NXT to make it completely automatic (press a button and it turns the station, lift, and brake run motors on/off so it keeps going) everything else is Knex, the size is huge taking up countless parts to build and the ride seems amazing having nothing to fear from real ones in fun factor.

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Tags: crazy hack   diy   lego   mechanical   

Tetris-Bot (TI DSP + Lego NXT robot)
posted June 25 2010 19:38.22

BranislavKisacanin made a Tetris-playing robot. What is the meaning or gain in making that you will wonder, nothing except the pleasure of making it as all other crazy or not projects i will answer. Despite the purpose is still a well made project that consists of a camera, a TI DM6437 DSP board (running his own embedded vision and artificial intelligence algorithms), and a three-finger NXT robotic hand (that presses the keys on the computer keyboard).
Tetris-Bot is not an NXT-only system, because the Brick has a limited input bandwidth. That's the reason of using a TI DM6437 DSP board to analyze the images coming from the camera, recognize the new shape, and find the best place and orientation for it. The instructions are communicated to the NXT robotic hand via LEDs on the board.
It's crazy, meaningless and we like it!

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Tags: crazy hack   electronic project   robot   microcontroller   lego   

Lego Mindstorms NXT - RPM Motor Power Level
posted June 23 2010 19:24.42

Palagerini made a small program that will allow your robot to figure out when it is stuck and take the appropriate action without the use of Touch and Ultrasonic Sensors.
If you want simplicity in your build and knowing always the real power level of your motors then that is for you, after all simple is better.

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Tags: electronic project   robot   diy   lego   

Lego NXT controlled with Android smartphone via Bluetooth
posted June 21 2010 20:26.30

linuxgeocacher is demonstrating an application of NXTControl for remote controlling a Lego Mindstorms NXT robot via an Android powered mobile phone. The difference is that you no longer need an intermediate PC, you can directly control the NXT via Bluetooth. All you need to have is an Android powered smartphone with at least Android version 2.1. There is also an Action-Button for doing other things than moving around.
Instructions and source code can be found here.

[Link: ghoelzl]
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Tags: electronic project   robot   diy   rc servo   cell phone hacks   remote control (RC)   accelerometer   lego   

Lego Mindstorms NXT: X-2 First stair Step up 3 steps
posted June 18 2010 16:26.30

222Doc, co-author of Building Robots with LEGO Mindstorms NXT, after managing his Lego robot to make his first stair step now raises the challenge by steping up 3 steps!
The mechanics of weight balancing is brilliant and even though is a bit slow the robot manages to step up with confidence.
The maker claims is the first Lego biped to achieve this and we have no reason not to believe him. You can search more info here and here.
More Lego NXT projects can be found here.

[Link: nxtasy]
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Tags: robot   rc servo   mechanical   lego   

fire fighting robot using LEGO NXT group 4
posted June 16 2010 19:28.34

This video shows results form the final project work in the mobile robotics course MMT200 at Dept of Design Sciences, Lund University. The project was performed by Magnus Brange and John Ã…kesson. The robot (NXT operating under leJOS JVM) is controlled by a game controller connected to a computer which in turn communicates with NXT via Blue Tooth.
Don't expect water, this robot uses air to stop the fire but still manages it.

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Tags: electronic project   robot   rc servo   remote control (RC)   lego   research   wireless   

Lego Coffee Capsule Dispenser
posted June 16 2010 18:40.12

BrickvilleThor, a Lego enthusiast, took as an excuse the absence of a system distributing coffee capsules for his work coffee machine and made one of Lego ofcourse.
The machine is accepting both euro and swiss francs, counts them, and in the NXT brick screen displays the remaining amount you need to get the capsule. After amount is full, a pump starts to fill an air tank and when it has enough pressure your capsule is delivered.
I just hope the capsule price is adequate for the gnome working so hard inside the machine. :)

[Link: Brickville]
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Tags: crazy hack   diy   mechanical   lego   

The HiTechnic HTWay - A Self-balancing Segway Type Robot
posted June 9 2010 14:04.05

HiTechnic manufactures a range of robotic sensors for the LEGO MINDSTORMS NXT. The majority of HiTechnic sensors are certified by The LEGO Company assuring the highest standards of quality and safety. In this video they use the Gyro Sensor along with the HiTechnic IR Receiver to make a self-balancing remote controlled robot. It can be built using parts from either an NXT 1.0 or 2.0 set and will even work with the large RCX wheels.
Building Instructions and programs in both NXT-G and NXC for download are provided here.

If 10-15 years before someone told you that one day you could make with Lego balancing robots would you believed him?

[Link: HiTechnic]
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Tags: electronic project   robot   diy   rc servo   lego   mechanical   

Lego Hello World
posted June 4 2010 12:19.38

horseattack using Lego as build material made a Lego printer with a marker as head. He made also the coding for communicating with his Apple Mac via usb and sent the images.
The video is a bit speeded up but the whole thing seems to work very well and with 75dpi accuracy as the maker says.

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Tags: crazy hack   electronic project   diy   rc servo   computer peripheral hacks   microcontroller   mechanical   lego   

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