LEGO Projects


LEGO MINDSTORMS Education EV3 transformer robot
A LEGO MINDSTORMS Education EV3 transformer robot that can turn into a bulldozer

This robot can turn into a bulldozer!

Xdozer is a LEGO MINDSTORMS EV3 transformer robot. Thanks to a special mechanism, it can turn into a bulldozer or into a tracked humanoid robot in few seconds.

  • In “vehicle” mode, the robot head and arms are hidden and folded, and the robot-in-disguise can follow dark lines on white surfaces. When it finds a red spot on the ground, the transformation into “robot” mode is triggered.
  • In “robot” mode, it can drive around and avoid obstacles which it detects using the distance sensor embedded in its head. The EV3 Color Sensor becomes a chest-mounted laser cannon.

I designed this LEGO MINDSTORMS EV3 project using the parts from a single LEGO MINDSTORMS EV3 Education core set 45544. This EV3 project is ideal for classroom activities, especially to show students how to build a sturdy mechanism involving worm gear and parallelogram linkages. Furthermore, it’s a sick LEGO transformer robot! Click the button below to get the building and programming instructions.


Xdozer Edu is ready to go! All the programs are included in the .EV3 project file that you get with the commercial license.
The quality of the building instructions is comparable to the LEGO official ones . The document is optimized to be displayed on 16:9 screens.
Xdozer Edu can be built with the parts from LEGO MINDSTORMS EV3 Education core set 45544.
Each PDF comes stamped with your name and license, to ensure product authenticity

Choose Your License


Take the chance, and get the instructions now!



  • Users
  • Building Instructions
  • Program Files & support
  • License Type
  • Commercial Use

Secure Paypal transaction.



  • Company Owners
  • Printable high-quality PDF document
  • Program screenshots, .EV3 project included
  • For commercial activities
  • YES

Secure Paypal transaction.

In the act of buying, you accept the following terms:

  1. You cannot share, resell or redistribute the material in any way with third parties.
  2. You cannot use the material for other uses than the one allowed  by your license.
  3. The material comes encrypted and protected, and cannot be extracted or transformed.

Any infringment to the above terms is considered a punishable criminal offence.

April 17, 2019
A LEGO MINDSTORMS Education EV3 transformer robot that can turn into a bulldozer

Xdozer – transformer robot

February 6, 2019
LEGO WeDo 2.0 line following robot uses a special mechanism to drive and steer

WeDo 2.0 Zig Zag

February 6, 2019
A race car built with LEGO WeDo 2.0 that can drive and steer!

WeDo 2.0 Race Car

February 6, 2019
LEGO WeDo 2.0 Sumo robot controled by remote joystick

WeDo 2.0 SumoBot

December 1, 2018
The JAEG3R is a massive LEGO MINDSTORMS EV3 humanoid robot

JAEG3R – EV3 Humanoid Robot

October 18, 2018

Fatti ritrarre da LEGONARDO!

July 25, 2018
A simple LEGO swing built with Simple & Powered Machines set 9686

Swing (9686)

June 22, 2018
LEGO automaton that can play programmable tunes on a xylophone

LEGO musical automaton

May 29, 2018
TIC TAC TO3 is a LEGO MINDSTORMS robot with artificial intelligence


May 22, 2018
A LEGO MINDSTORMS EV3 robot that can build LEGO ducks

Duck Maker 4

April 9, 2018
SNABPBOT is a LEGO MINDSTORMS EV3 robot based on modules that can be combined in more than 100 ways


March 9, 2018
EV3 tricycle robot that can smoothly follow lines on the ground

EV3 Tricycle

February 9, 2018
LEGO MINDSTORMS EV3 Biped robot (education set 45544)

EV3 biped – tea serving karakuri

January 9, 2018
A LEGO MINDSTORMS EV3 animatronic head built with Education core set 45544

EV3 Animatronic Head (Education)

July 31, 2017
A LEGO MINDSTORMS Education EV3 Turtle

EV3 Turtle (set 45544)

December 30, 2016

EV3 Animatronic Head

August 18, 2016

LEGO Lenticular Mosaic

July 10, 2016

LEGO robotic cell model for ABB press automation

February 3, 2016
Chip & Dale are LEGO mecha built with Edu and Retail set


December 17, 2015
LEGO Car Factory built with LEGO MINDSTORMS EV3 and custom electronics

LEGO Car Factory (CEA LIST)

December 1, 2015
Pick and place robot arm that sorts gears in a mysterious way

LEGO MINDSTORMS EV3 Mysterious Gear Sorter

August 31, 2015

Brick-a-Braille (modular teaching system)

June 30, 2015


May 20, 2015
LEGO analog clock built with EV3

Analog Clock

April 20, 2015
Build a LEGO robot with set 10692

Build a LEGO robot with set #10692

March 20, 2015


February 16, 2015
LEGO Wall-e made with EV3


February 10, 2015
Preview of the alternative LEGO Creator instructions 31014

Alternative models for LEGO Creator set 31014

August 28, 2014
LEGO electric guitar


June 26, 2014

LEGO Duck Maker (Pick-a-Duck)

June 26, 2014

Danny’s Lab T-shirts

At some LEGO event and TV interview, I was wearing my EV3L hoodie, and many people liked it a lot. I also made some really cool t-shirts with Cyclops printed […]
January 29, 2014

The Education version of The LEGO MINDSTORMS EV3 Laboratory

December 22, 2013

EV3 Animatronic Heads

December 2013: After having designed this creepy animatronic head using the LEGO MINDSTORMS Education EV3 core set 45544, I adapted it to be built also with […]
October 7, 2013


September 30, 2013
EV3 Biped robot that serves tea, as ancient japanese karakuri

Tea serving EV3 robot (Karakuri ningyō)

September 23, 2013

Cyclops mk III

Cyclops mark 3 is a complete redesign of my previous LEGO mecha. I developed a new two-motor walking core that I am reusing in my latest […]
September 18, 2013

My LEGO Rubik’s cube solver story

 First trip: Luxembourg My LEGO Rubik’s cube solver (result of the LEGO Rubik Utopia project) started travelling on 22 September 2007, to be shown at the […]
September 17, 2013

Portrayer robot

September 2008: This LEGO MINDSTORMS portrayer robot was a preliminary study for LEGONARDO. It is a SCARA robotic arm that can draw any image. The steps to get […]
September 17, 2013

Low cost smart wheelchair

This page is not strictly about robots. It tells the story of a kid, and his mom. I am accidentally part of this story. The aim […]
September 17, 2013


This is a LEGO AT-ST walker (All Terrain Scout Transport) from the Star Wars saga. It walks and turns using just two motors. This LEGO MINDSTORMS biped […]
September 17, 2013

NXTAPOD – NXT hexapod walker

September 17, 2013

LEGO Forklift with Linear Actuator

September 16, 2013

Color Sorter (4DOF arm)

This robotic arm has 4 Degrees of Freedom (motors): one to turn, one to move vertically, one to move horizontally and the last for the gripper. Its […]
September 13, 2013

Creating Cool LEGO MINDSTORMS NXT Robots

September 13, 2013

Ball and Plate 1 (NXT)

A Ball and Plate system is a device that attempts to balance a ball on a plate. It is a well-known feedback control exercise for engineering students, […]
September 5, 2013

NXT2WIFI – LEGO WiFi module

September 2, 2013

New exoskeleton prototype

I am developing a new exoskeleton to control the upper limbs of Cyclops mk 3. This time, I’m using my dear old wooden puppet Molla as a […]
August 28, 2013

RCX creations

My RCX creations (2004-2006)  
March 2, 2013
LEGONARDO is a LEGO portrayer robot


February 17, 2012


February 2012: The Tripod is built after the alien invaders of the War of the Worlds movie. Its unique way of walking allows this monster to […]
February 10, 2012
A robotic turtle made with LEGO MINDSTORMS NXT 2.0

NXT Turtle 2.0

December 2, 2011


June 1, 2011

Industrial plant model

September 26, 2010

Making of NXT Soccer Game

During 2010, Mario Ferrari and I joined the efforts to make a fully autonomous soccer game system using MINDSTORMS NXT. Here’s some picture from the making of […]
September 26, 2010

Serious NXT Soccer Game

During 2010, Mario Ferrari and I joined the efforts to make a fully autonomous soccer game system using MINDSTORMS NXT. It was a great honor for me […]
August 1, 2010


August 2010: It seems like yesterday when I started building LEGO MINDSTORMS Robots! Yet, according to my personal archive, this is the 100th invention. Each idea […]
April 26, 2010

Resonant biped robot

This LEGO biped robot can walk and turn using just two motors, so the third could be used for moving the arms. It was invented as […]
November 10, 2009

Audrey II – People Eating Plant

November 2009: Audrey II is a dangerous blood-thirsty men eating plant, often considered as the missing link between the vegetables and mammals. Does not need too […]
September 13, 2009


Support Page Need help? Drop me a mail using the contact form.  Downloads TR Source Code To download, enter the password, that is the second word […]
September 26, 2008

Horse race

A day at the races! This is a simple but really funny LEGO MINDSTORMS NXT table game for two players. Hold you controller, and tap on […]
May 1, 2008

The first NXT LEGO Rubik’s cube solver

Spring 2007: During February, March, April 2007, I’ve been very busy preparing University exams. The one which certainly caught my attention most was AI (artificial intelligence), that taught me about […]
March 17, 2008

Q Learning robot snail

May 17, 2006

Mine Sweeper

The Mine Sweeper robot scans for black bricks on flat light surfaces, collects and stores them in its large compartment. This robot is described in my book […]
April 17, 2006

NXT Turtle 1.0

April 2006: This robotic pet features an autonomous behavior modelled using a state machine. It walks around, and when it’s scared by someone approaching or by […]
October 16, 2005


Here’s another biped robot, in the shape of a standing owl. I used only RIS 2.0 parts, plus a rotation sensor. This is a weight-shifting biped walker. It uses 2 […]
October 15, 2005

Hexapod walker (RCX)

This small LEGO MINDSTORMS RCX hexapod robot can walk and turn in place. It has three motors: Two motors move external legs forward and backward. A […]
September 1, 2005

LEGO MINDSTORMS on/off proximity sensor (RCX)

March 17, 2005

Little Johnny 5 (RCX)

March 2005: This little cute LEGO replica of Johnny 5 robot has working treads, poseable head, neck, eyebrows, hands and laser gun. It’s built from a single LEGO […]
December 17, 2004


December 2004: This is a walker biped, shaped as the famous chicken walker of the Star Wars movies, the All Terrain – Scout Transport (AT-ST). It can […]
October 5, 2004

Yellow Dwarf

October 2004: Compact, smooth, and powered by only two motors, this little biped robot uses a standard Lego Light Sensor as proximity sensor, using signals emitted […]
August 1, 2004


August 2004: After many trials, here’s a smooth weight shifting biped walker, powered with a single motor. The legs mechanism let it swing side to side while walking. […]
July 17, 2004

LEGO MINDSTORMS analog proximity sensor (RCX)

July 2004: This is the first custom proximity sensor I made for the RCX, fitted in a box made by two 2×4 bricks. It returns a […]
June 4, 2004


June 2004: A LEGO rotation sensor for RCX is not so easy to find, and not at all cheap. In many cases it’s not the best way to […]
April 16, 2004


April 2004: With this wonderful device, you can connect up to 8 active sensors to one single RCX Input port. It works bad only for Lego […]
April 16, 2004

LEGO MINDSTORMS RCX output Multiplexer (MUX)

April 2004: I developed a simple yet effective motor multiplexer for RCX, to raise the number of motors it can drive from 3 to 6. It’s really […]
February 16, 2004


February 2004: This is a reproduction of the Armored Personnel Unit (A.P.U.), the notorious Zion Gatekeeper robot from the Matrix movies. It is a biped that […]