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

Category Archives: WeDo Pet

WeDo Pet

Goal: Everyone needs a pet, but not everyone can have a live one. Make a WeDo pet instead. Use a WeDo sensor and motor to make the pet respond to you in some way. A puppy that wags its tail? A kitten that comes when you call it? A tarantula that twitches when it sees food? Create the pet you’d love to have. In your submission, be sure to tell us your pet’s name! 


Start date: January 1, 2015
Due date: January 31, 2015

Rules: Use a WeDo motor and a sensor to make a pet that responds in some way. You can only use the sensors and motors from the WeDo kit. However, you are welcome to use multiple WeDo kits, additional LEGO pieces, and non-LEGO materials. Tips for using WeDo motors can be found here: Design for Motion. For tips on using sound with the WeDo program, check out this snippet: Programming Sound.


Submissions for WeDo Pet


Eva and Marina have built a very special pet, a bird that moves its wings when the movement sensor detects some movement. They use some gears to produce the wings movement. A beautiful bird.   This is Coco, the pet built by Marina and Eva for the Dr. E Challenges (

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The 4×4 pet

Izan is 6 years old and has invented a very strange pet, the 4×4 pet. This pet has four eyes, two arms and Max can ride it. Izan has used gears for the arms movement. Very good work.   This is the 4×4 pet built by Izan for the Dr. E Challenges (

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The gorilla pet

Javier and Isabel have built an unusual pet, a gorilla. Have you ever known a person with a gorilla as a pet? Javier and Isabel have one and it’s very special. They have used gears for the paws movement.   This is a gorilla pet built by Javier and Isabel with Lego Wedo for the […]

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The robot dog

Diego is 6 years old and has built a special dog that moves its head. He has a lot of imagination and it’s very intelligent. This a pet built by Diego Martín, for Dr. E Challenges ( This is for the WeDo Pet Challenge.

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Trained Wedo Dog

This robot dog named Twitchy, is a well trained pet you don’t have to feed or walk. He responds to voice and hand commands, but can be a bit grumpy if you touch his tail!  This is Twitchy when he sits. I can make him lie down, and bark.  His eyes glow red like this […]

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