Sadly, Dr. E’s WeDo Challenges and Dr. E’s MINDSTORMS Challenges will no longer be posting new challenges. However, both websites will remain up so that you can continue to access the previous challenges and all of the wonderful submissions. Thank you to LEGO Education and to the Center for Engineering Education and Outreach at Tufts University for their years of support (and thank you to LEGO for their amazing robotics platforms). During the six years of WeDo challlenges and five years of MINDSTORMS challenges, we received almost 1000 submissions from around the world. The two websites had a total of 1266 registered users from 57 different countries. We were truly a global community! We have always been inspired and energized by the creativity and innovation shown by the Dr. E's Challenges community; while new challenges won't be posted moving forward, we hope that you continue doing awesome stuff in your homes, clubs, and classrooms and that you continue to share your projects with the world! Collaborating with all of you has been a joy and an inspiration. Thank you, The folks at Dr. E’s

Mina robada per Pepito i Juanito (Robbing the mine)


 "Pepito" and "Juanito" try to rob the gold & diamonds mine....
There is a sensor to activate a DELAYED alarm. When the sensor is activated, the program waits a while:  5 seconds after thieves cross the sensor the program switch on the alarm and after 10 seconds the program activates the motor of the elevator (the police guard was sleeping inside the elevator!!).  The motor runs automatically during 11 seconds and elevator stops in front of the entrance of the mine (the door with a sensor).
The alarm switch off when the police passes in front of the sensor to catch the thieves robbing the mine. Then the persecution starts !! 
The police also has a Lego helicopter modified to include power functions!!



  1. ArcaDroidEx

    Very good job Guillem, we like it very much. You have a lot of imagination. You are very good with Lego, go on in this way.
    Muy buen trabajo Guillem, nos encanta. Tienes mucha imaginación. Eres muy bueno con Lego, continúa así.

    Good luck. I think you will win.

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