Category Archives: Mindstorms Robots

FIRST LEGO League Compatible Robot – Mark III

FLL-Robot Mark III - logo

This is third in a serious of FIRST LEGO League (FLL) Robot which can be made from a single LEGO Mindstorms EV3 (Home 31313) kit and a handful of other LEGO Technic Parts. It was built with the intention of being demonstration Robot that the team members of the Metal Minds Robotics Team I mentor could build at home with their own EV3 Kits.

This Robot is a development of the Mark II Robot with a number of refinements, and the addition of another Power Take Off point at the rear of the Robot. This later addition allows for two Powered Attachments to mounted on the Robot at one time. Another improvement which greatly improves the Robots Turn and Straight Line accuracy is the replacement of the Jockey Wheels with a pair of  “Angled Ball Joints“.

FLL Animal Allies: Climbing the Bio-mimicry Wall – Part II

Animal Allies Logo

After setting my new 2017 group of FIRST LEGO Leage (FLL) Students the “Bio-mimicry Wall Climbing Task” from the 2016 Animal Allies Challenge, I thought I should prove that it is possible to achieve. The Bio-mimicry Wall Climbing Task requires having the Robot lift its self up upon a wall with no part of the Robot touching the Challenge Mat. Easier than it sounds…

FLL Animal Allies: Climbing the Bio-mimicry Wall with Robot

Animal Allies Logo

After setting my new 2017 group of FIRST LEGO Leage (FLL) Students the “Bio-mimicry Wall Climbing Task” from the 2016 Animal Allies Challenge, I thought I should prove that it is possible to achieve. The Bio-mimicry Wall Climbing Task requires having the Robot lift its self up upon a wall with no part of the Robot touching the Challenge Mat. Easier than it sounds…

Preforming the Polygon Shuffle with a EV3 Gyroscope

EV3-G

A polygon is any 2-dimensional shape formed with straight lines. Triangles, quadrilaterals, pentagons, and hexagons are all examples of polygons. The name tells you how many sides the shape has. A polygon is any shape made up of straight lines that can be drawn on a flat surface, like a piece of paper. Such shapes include squares, rectangles, triangles and pentagons, but not circles or any other shape that includes a curve.

There are two main types of polygon – regular and irregular. A regular polygon has equal length sides with equal angles between each side. Any other polygon is an irregular polygon, which by definition has unequal length sides and unequal angles between sides.

geometric-shapes-polygons-sides-worksheet

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 EV3 Ball Chasing Robot using the PixyCAM

PixyCAM Follow the Ball
This article aims to describe how to programme a LEGO Mindstorms EV3 robot that chases things, like a ball in this example. It’s the same robot and program that’s used in the PixyCAM Video below. This robot and program is a good launching point for other projects, and it’s a good introduction to PID control, which is used throughout robotics and engineering in general.

‘Metal Minds Robotics’ FLL Team are Winners & Grinners !

Thank you to the ‘Metal Minds Robotics’ team for a great FIRST LEGO League (FLL) Competition at the Tasmanian State Championships on Saturday 19 October 2016, held in Hobart. I trust everyone else enjoyed the day at least half as much as I did. It was fantastic to see our future Scientists, Technologists, Engineers, and Mathematicians putting their combined skills together for such a great out come.

FLL Robot from a single EV3 31313 Kit: Mark II

FLL Robot from a EV3 Kit
This is my second attempt at a FIRST LEGO League (FLL) Robot which can be made from a single LEGO Mindstorms EV3 (Home 31313) kit. It was built with the intention of being demonstration Robot that the team members of the Metal Minds Robotics Team I mentor could build at home with their own EV3 Kits.

Dual Container Grab Mechanism for STS Crane

dual container grab mechanism
Over the last 8 months I have been working on Ship-to-Shore (STS) Bulk Container Handling Crane which is scaled to the LEGO 20′ Container that comes with LEGO Maersk  Train set. This Dual Container Grab Mechanism will hand two 40′ Containers, or four 20′ Container, or one 40′ & two 20′ Containers.

FIRST LEGO League (FLL) Robot from a single EV3 Kit

This is my first attempt at a FIRST LEGO League (FLL) Robot which can be made from a single LEGO Mindstorms EV3 (Home) kit. It was built with the intention of being demonstration Robot that the team members of the Metal Minds Robotics Team I mentor could build at home with their own EV3 Kits.

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.

Just Monkeying Around

Monkeying Around

This is my latest Mindstorms Project, a LEGO Mindstorms EV3 Robotic Monkey that Climbs his way along a bar made from 25mm PVC Plumbing Pipe.

The Robot uses an EV3 Programmable Brick to control 3x Large NXT Servo Motors and a Medium EV3 Servo Motor. The Medium Servo Motor Rotates the Monkey’s Arms. Each of the Monkey’s Hands is opened and close with a Large Servo Motor. The third Large Servo Motor animates the Monkey’s Tail.This is my latest Mindstorms Project, a LEGO Mindstorms EV3 Robotic Monkey that Climbs his way along a bar made from 25mm PVC Plumbing Pipe.

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.

LEGO Minstorms EV3 Segway Uses Microinfinity Cruizcore IMU

EV3 Segway
I have been working on creating a LEGO Minstorms EV3 Segway which uses Microinfinity Cruizcore IMU (Inertia Measurement Unit). The Robot is programmed using RobotC v4.xx for LEGO Minstorms, and uses the ROBOTC 4.x Driver Suite for NXT and EV3 written by Xander Soldaat. I originally need an extra Segway to exhibit at Brixhibition Launceston 2015, and as all my NXT Bricks were in use I decided to put together an EV3 based version.

Mindstorms EV3 Dual-Wheeled Holonomic Platform

Technicolour Holonomic Platform
I have been working on an LEGO Mindstorms EV3 Holonomic Platform, with Dual-Wheels on each of its three sides. It is controlled via a Sony PlayStation Wireless Remote Control. The PS2 Remote interfaces to the LEGO Mindstorms EV3 Brick via Mindsensors PSP-Nx-v4 Adapter.



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