Category Archives: Mindstorms NXT Robots

Powering the LEGO Mindstorms Brick from a 9v Plugpack

I have been asked a number of times too how I power my Stationary and Development Robots from a 9 Volt, 5 Amp D.C. Plugpack connected to the Mains Power Supply. I prefer to have a Power Supply that can easily handle the demands put on it. A minimum rating of 3 Amps is needed if you plan running 4x Motors from the EV3 Brick.

LEGO Mindstorms NXT Coloured Ball Sorting Crane

LegoMindstormsNXTColouredBallSortingCrane

Good things do sometimes come from disasters. A couple of days ago I was attempting to lift down approximately 5Kg of assorted LEGO parts when the container took advantage of gravity, and headed straight to the floor. This ended in a completely empty storage container, and LEGO dispersed for metres about. Towards the end of the cleanup, I came across a pair of Green Mudgaurds from a LEGO Technics 8291 Green Dirt Bike.

Computerised Vertical-Lifting-Span Railway Bridge

Vertical-Lift-Span Railway Bridge
Movable Vertical-Lift-Span Bridges have a movable portion deck which remains horizontal as it is lifted vertically. The amount of headroom available is determined by the variations between water levels and the heights of the lift towers. Water traffic beneath these bridges are usually restricted to low-masted craft, barges and tugs.

Holonomic Platform for 125mm Rotacaster Omniwheels

I’ve been working on a very solid, Holonomic Platform to be used with the large 125mm Rotacaster Omniwheels as part of my display for the TAZ-Brick Collector Club’s Brixhibition to be held on the weekend of 20-21 April 2013.

Mindstorms NXT Forklift Mark IV

I have reworked my LEGO Mindstorms NXT Forklift again. This is the Mark IV version of my NXT Forklift with the major difference to previous designs relates to the Boom that moves the Folks Up-and-Down. In this version the Boom is far longer allowing the Forks to be raise 10 Studs from floor level.

Rotacasters: Big, Bigger, Biggest!

Yes it ‘s another Holonomic Platform Robot, but this ones special. I built this Mindstorms Robot to celebrate a package that arrived in the post today from Rotacaster Australia. Yes, more omni-wheels to’ Beta Test’. But these are monsters compared to the original 48mm (2″) Rotacaters.

LEGO Mindstorms NXT Stair Climbing Robot

After seeing this LEGO Mindstorms EV3, Stair Climbing Robot on ‘The NEXT Step Blog‘, I decided to build my own NXT Version. I had attempted a couple before several years ago, but they weren’t overly successful. Now with lots of IMU Sensor add-ons for the Mindstorms NXT, it makes the task a lot easier.

LEGO Mindstorms NXT Rotacaster Bug Bot

I originally built this LEGO Mindstorms NXT Bug Bot Robot as part of a display at the TAZ-Brick (www.tazbrick.com) Collector Clubs Brixhibition North. The robot proved a hit with the under 10, LEGO Fanatics. Since then I’ve been playing around with the design of my Mindstorms NXT Bug Bot. In this new version I have replaced the 2x RCX type Touch Sensors with 2x NXT type Touch Sensors. The front bumpers had to remodelled to take the NXT Touch Sensors.

LEGO Mindstorms NXT Bin Emptying Robot – Mark III

This is a LEGO Mindstorms NXT “Bin Emptying Robot Mark III”. It is part of a larger project I have been working on, my “Ball Sorting Factory“. A forklift delivers full Bins of balls to be emptied. The Emptied bins are then taken away to the processing facility to be refilled. The Mark II version worked well, but was a little unreliable, unlike this version. Like the previous version, it uses a “Ball Repository” to store, mix and reload the Production Line with Balls when the “Ball Sorting Factory” needs them.

LEGO Mindstorms NXT Bin Emptying Robot – Mark II

This is a LEGO Mindstorms NXT “Bin Emptying Robot Mark II”. It is part of a larger project I have been working on, my “Ball Sorting Factory“. A forklift delivers full Bins of balls to be emptied. The Emptied bins are then taken away to the processing facility to be refilled. The Mark I version worked well, but it was slow and very noisy, unlike this version. Also this version uses a “Ball Repository” to store, mix and reload the Production Line with Balls when the “Ball Sorting Factory” needs them.

LEGO Mindstorms NXT Bin Emptying Robot – Mark I

This is Mark I of my LEGO Mindstorms NXT Ball Sorting Factory, which I have been working for a number of weeks. The whole project consists of three main parts. Firstly there is the ‘Ball Sorting Factory’, made up of Gantry System with 3-Axis: Front-Back, Left-Right, and Up-Down for the Ball Gripping Claw. The Second Part is the Forklift Truck which carries the ‘Ball Bins’ from loading to emptying positions. The final part is the ‘Ball Bin Emptying” mechanism & Conveyor system.

NXT Tower Defense Programmed with Urbi

I came across the NXT Tower Defense project while cruising the web and felt compelled to share it. NXT Tower Defense is a system that lets you build, develop and play with your own robot. This robot is designed with Lego Mindstorms NXT for hardware and uses URBI, Qt and OpenCV for the software. This means that this robot can be used by anyone who has some knowledge of development – and Lego – and the desire to learn about robotics and especially URBI.

Mindstorms NXT Forklift Truck & Bin Emptying Machine

I’m currently working on a Sorting Factory, complete with LEGO Mindstorms NXT Forklift Truck and Bin Emptying Robot. Part of a larger project I’m currently working on (partly visible in the upper-left corner of photographs). The Forklift is used to deliver full Bins of balls to be emptied by the Bin Emptying Machine, and then the empty bin is taken away, back to the processing facility.

Tweeting Data with NXT2WiFi Webserver Module

In this Tutorial we will go through the steps required to have your LEGO Mindstorms NXT Data sent to Twitter using the NXT2WiFi Miniature Web Server Module. In this Tutorial, the code used to program the LEGO Mindstorms NXT is [nxc]. You will also need a Twitter Account, if you don’t already have one.

NXT2WiFi: Using Webpage Sliders to Control Motors

This tutorial follows on from my previous NXT2WiFi Articles. In this example [robotc] is used to program the NXT. Using Webpage Sliders to Control LEGO Mindstorms NXT Motors with your [NXT2WiFi] is relatively easy. You will need to have the latest [NXT2WiFi] Custom Webserver Source Code in order to use Slide Controls.



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