Difference between revisions of "Melty Brain"

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[[File:MeltyB.jpg|thumb|Melty Brain Beetleweight]]
  
 
The '''Melty Brain''' robot is a modified Thwack Bot that allows 100% of the bots mass to spin, but unlike a traditional Thwack bot that spins in place, the Melty Brain robot adjusts the wheel speed on each rotation allowing it to effectively drive around the arena.  
 
The '''Melty Brain''' robot is a modified Thwack Bot that allows 100% of the bots mass to spin, but unlike a traditional Thwack bot that spins in place, the Melty Brain robot adjusts the wheel speed on each rotation allowing it to effectively drive around the arena.  
  
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1-wheeled robots: Although the design may seem counter-intuitive, there are advantages to using a single large motor to spin the robot. In addition to the increased power and durability of a single motor, tuning a single wheel to control the robots movement is generally easier.
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2 wheeled robots: These melty brain robots have a more typical design with two wheels to balance the weight of the robot as it goes through it's rotation. Although these can be just as effective as 1-wheeled robots, the additional friction from the second wheel as well as weight-differences between the two wheels can make tuning the melty-brain more difficult. One advantage of a two-wheeled Meltybrain robot is that it can revert to (more usual) tank-drive steering, e.g. to escape from corners.
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Mechanical Melty Brain: Although not a true Melty Brain, there have been examples where a small amount of weight is dedicated to a central 'directional' bot that maintains contact with the ground and uses a cam to adjust the wheel angle during the robots rotation. (Y-Pout)
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{{#ev:youtube|https://youtu.be/WMLEQafT7-Y}}
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Rich Olson over at Nothing Labs has an open source melty brain project and has successfully used his approach with a variety of weight-classes.
 
http://www.nothinglabs.com/openmelt/
 
http://www.nothinglabs.com/openmelt/
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See also https://en.wikipedia.org/wiki/Translational_drift

Latest revision as of 03:07, 27 November 2021

Melty Brain Beetleweight

The Melty Brain robot is a modified Thwack Bot that allows 100% of the bots mass to spin, but unlike a traditional Thwack bot that spins in place, the Melty Brain robot adjusts the wheel speed on each rotation allowing it to effectively drive around the arena.

1-wheeled robots: Although the design may seem counter-intuitive, there are advantages to using a single large motor to spin the robot. In addition to the increased power and durability of a single motor, tuning a single wheel to control the robots movement is generally easier.

2 wheeled robots: These melty brain robots have a more typical design with two wheels to balance the weight of the robot as it goes through it's rotation. Although these can be just as effective as 1-wheeled robots, the additional friction from the second wheel as well as weight-differences between the two wheels can make tuning the melty-brain more difficult. One advantage of a two-wheeled Meltybrain robot is that it can revert to (more usual) tank-drive steering, e.g. to escape from corners.

Mechanical Melty Brain: Although not a true Melty Brain, there have been examples where a small amount of weight is dedicated to a central 'directional' bot that maintains contact with the ground and uses a cam to adjust the wheel angle during the robots rotation. (Y-Pout)

Rich Olson over at Nothing Labs has an open source melty brain project and has successfully used his approach with a variety of weight-classes. http://www.nothinglabs.com/openmelt/

See also https://en.wikipedia.org/wiki/Translational_drift