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

Green Howler Zombie

Green Howler Zombie
This creature, Greenius Howlius Zombius, will stay extremely still until you get within a short distance of him. When you do, he will let out a long howl and begin chasing after you. This green howler is depicted wearing goggles, thus the strange eye glint, and carrying a spider in one hand and a bamboo leaf in the other.
I used a crown gear system to make the legs move and I concealed a distance sensor in the head. I then covered it up with green paper and added the limbs so that it looked a lot scarier, and well, more realistic. I programmed it using Scratch programming language, and I modeled the leg design in LDD (Lego Digital Designer). 
This robot even scares me, and I'm used to it!


  1. EV3er

    the idea of programing with scratch was great and i think this is probably one of the scariest robots i’ve ever seen, especially with the way that you incorporated elements besides legos

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