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

Pavlinka’s pencil case from Hogwarts School of Witchcraft and Wizardry


 There is a new witch studying at Hogwarts School of Witchcraft and Wizardry. She has a new pencil case able to follow her on any place. Moreover, it can be open only by touching a special button (aka touch sensor). The witch also owns a new (robo)cat - maybe Crookshanks... Enjoy the video!



  1. bbratzel

    What a wonderful invention–a pencil case that follows you around. You would always have a pencil when you needed one! Thank you for including the program so that others can see how your creation works.

  2. anika

    Hello Pavlinka

    I love the pencil case follower. A very good use of a distance sensor, a touch sensor and a medium motor.
    Would love to see more creations from you.


Leave a Reply