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

Table-cleaner cleaning mess made by Robocat

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Pavlinka made two robots - walking Robocat (that made mess on the table) and a table-cleaner able to clean it. To make Robocat walking, it was necessary to increase power of the robot on the expense of speed. Moreover, Robocat uses a motion sensor to stop walking.
The table-cleaner is inspired by the project Moon Base. At the beginning, the table-cleaner was also too weak to push the sponge. Pavlinka used the similar approach as in the case of Robocat - she geared it down. The table-cleaner uses motion sensor to detect end of the table, subsequently it turns and continues to clean the table.
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Robocat walks until it sees something in front of it, it stops and miaows.

 

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The table-cleaner cleans the table until it sees end of the table. It stops, its motor turns in opposite direction which causes that the table-cleaner turns.

 

1 Comment

  1. bbratzel

    Your table-cleaning tool is the perfect solution to messy sauces like ketchup! You made excellent use of a sensor to keep it from driving off the table.And Robocat is wonderful! The walking mechanism is really clever!

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