EXPLOR3R Building Instructions

EXPLOR3R with Touch Sensor and IR Sensor
EXPLOR3R with Touch Sensor and IR Sensor

The EXPLOR3R is the first robot in The LEGO MINDSTORMS EV3 Discovery Book. It’s a versatile wheeled vehicle that uses sensors to navigate around a room and follow lines.

Chapters 1-9 in the book use this vehicle to demonstrate the ins and outs of LEGO MINDSTORMS EV3 programming. The examples in the book show you how to make the EXPLOR3R avoid obstacles, track the IR beacon, and follow colored lines (and much more!)

Since it’s easy to build and easy to extend the design, EXPLOR3R is also a useful prototyping platform for other projects. This video shows the EXPLOR3R running Python code, and this camera sensor even extends EXPLOR3R with vision. And now you can build it too.

Just follow the instruction steps below—and add something cool!

Building the Base

EXPLOR3R
EXPLOR3R Base
LEGOMINDSTORMSEV3DiscoveryBook-EXPLOR3R-BOM
Bill of materials for the EXPLOR3R base. All parts are included in the LEGO MINDSTORMS EV3 Home Edition.

LEGOMINDSTORMSEV3DiscoveryBook-p11

LEGOMINDSTORMSEV3DiscoveryBook-p12

LEGOMINDSTORMSEV3DiscoveryBook-p13

LEGOMINDSTORMSEV3DiscoveryBook-p14

LEGOMINDSTORMSEV3DiscoveryBook-p15

LEGOMINDSTORMSEV3DiscoveryBook-p16

LEGOMINDSTORMSEV3DiscoveryBook-p17

LEGOMINDSTORMSEV3DiscoveryBook-p18

LEGOMINDSTORMSEV3DiscoveryBook-p19

Building the Touch Sensor Attachment

EXPLOR3R with Touch Sensor and IR Sensor
EXPLOR3R with Touch Sensor

LEGOMINDSTORMSEV3DiscoveryBook-p63

LEGOMINDSTORMSEV3DiscoveryBook-p64

LEGOMINDSTORMSEV3DiscoveryBook-p65

Building the Color Sensor Attachment

EXPLOR3R with Color Sensor
EXPLOR3R with Color Sensor

LEGOMINDSTORMSEV3DiscoveryBook-p76

39 Responses
  1. Tony Nguyen

    Hi Laurens,

    Can the EXPLOR3R do anything more?

    Could you post the instructions of the claw just like in the pixy video?

    Thanks

    Tony

  2. Gerry

    Hello,

    do you also provide a sample program for this robot. My problem is that I cannot really identify online programs that I can play with to learn.

    Thanks!
    Gerry

    1. Numerous sample programs for this robot can be found in The LEGO MINDSTORMS EV3 Discovery Book 🙂

      When you have the book, you can also download the sample programs from this web page.

    1. Mater Shao

      Technically you may build a one by the latest version of LDD which contains EV3 Bricks, though it may take some time–especially when spinning the beams.

    2. jack

      hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

    1. David Lechner

      The Core Education set has nearly all the same parts, just in different colors, with the exception of the wheels and the IR sensor. You can replace the IR sensor with the Ultrasonic sensor and you can adjust the height of the caster in back to match the larger wheels in front.

  3. Matt

    how do you program the ev3 robot to do things without the computer and just the brick for the home set edition

    please answer, and thank you.

Leave a Reply

Discover LEGO MINDSTORMS EV3

EV3 Discovery

Discover the many features of the EV3 set, and learn to build and program your own robots! Learn more

Start Building Robots

ev3set

Website Maintenance

Robotsquare is currently being updated, which means that it may look a little different (and not very polished) for a while. All the content and pages should still be there, though. It should be back and fully operational soon. Thanks for your patience!