VEX Design Challenge

Entry: Bear Bot

Challenge Summary

VRDCThe FUTURE Foundation exists to advance robotics and technology through education. One of the most promising areas in robotics engineering for the next generation will be in using robotics for entertainment and amusement. The FUTURE Challenge for 2011 is to design and build a robot or robotic machine using VEX components that entertains and/or amuses. Your robot may either be an entertaining machine itself or it can be a working scale VEX prototype of a larger machine. An elegant and entertaining engineering solution demonstrated using VEX is the goal of this challenge.

Entry Detail

Team 4542 (Ursa Major)ís robot built for the 2011 Future Foundation Design Challenge is called
Bear_Bot. It entertains and amuses by performing tasks such as dancing and playing
the piano. It can also mimic the arm movements of a user who is holding the VexNet
joystick. BearBot is a humanoid with a holonomic drive base in place of legs. It has full
range of motion in both arms and two planes of motion in its head. It can bend at the
waist, and strafe or turn in any direction. Bear_Bot is powered by 8 servos and 5 motors.
There are 4 servos on each arm and 2 servos on the head. There is one motor on each of
the 4 wheels of the holonomic drive, and there is one high strength motor used to control
the waist. Since this is too many motors for one cortex to handle, a modified a PWM
wire was used to interface two cortexes and make them work together.

Entry Files

  • Top view
    Top view
    file type: JPEG Image (image/jpeg)
    file name: P1020374.JPG
    file size: 5.03 MB
    download file
    (right click, save as)
  • Bottom view
    Bottom view
    file type: JPEG Image (image/jpeg)
    file name: P1020377.JPG
    file size: 3.86 MB
    download file
    (right click, save as)
  • Side view
    Side view
    file type: JPEG Image (image/jpeg)
    file name: P1020378.JPG
    file size: 4.86 MB
    download file
    (right click, save as)
  • front view
    front view
    file type: JPEG Image (image/jpeg)
    file name: P1020403.JPG
    file size: 5.02 MB
    download file
    (right click, save as)
  • Front internal view
    Front internal view
    file type: JPEG Image (image/jpeg)
    file name: P1020402.JPG
    file size: 4.8 MB
    download file
    (right click, save as)
  • Bear_Bot
    A video with the demonstrations of Bear_Bot dancing, playing the piano, and entertaining older siblings.
    file type: YouTube Video (youtube)
    file URL: http://www.youtube.com/watch?v=Y5tPkMS1_h8

User Details


Team Number: 4542
Joined: 01-01-1970 12:00 AM
Challenge Entries: 3 entries

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User Comments (6)

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  • Efthemi Hatzis
    02-28-2011 10:48 PM
    lol that's our team uniform
  • greyhybrid
    02-22-2011 09:30 PM
    The only problme I see with this is how there is a motor sticking out of the bear's head and how the wiring is not well spread out.. but it seems you are using 2 cortex's which seems pretty interesting
  • Efthemi Hatzis
    02-18-2011 06:34 PM
    It may be because the shirt blocks your view a little, but it has full movement in both arms. We are still adding to the routine of the robot and we will be posting new routines constantly, without the shirt next time to prove that its movement is not limited.
  • prschick
    02-16-2011 02:36 PM
    Love it - great video
  • Efthemi Hatzis
    02-14-2011 06:53 PM
    I love this thing!!
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