Students at Stanford University introduced the four-legged robot Doggo designed for self-Assembly. If desired, it can collect anyone using commercially available components, open software and the documentation, which the authors have published on GitHub. In the current version of the robot allows it to perform very interesting acrobatic stunts, including a backflip. In addition, the robot has excellent jumping ability that allow it to bypass the other robots of similar design and higher cost.
In General, the robot Doggo copies the design of other four-legged machines, but what makes it unique is the cost and availability of self-Assembly. While comparable robots can do in the Assembly, tens of thousands of dollars, the creators of Doggo from the Extreme Mobility Lab at Stanford University say that the cost of all components Doggo is less than $ 3,000.
“We have often seen, like quadruped robots are being used for various studies, but they all looked bulky and expensive, not like machines that you can take with you to the lab and use in their own projects. We originally wanted to do Doggo as a project with an open architecture so you can collect it yourself, even not having a large budget,” says Nathan KAU, the head of the Extreme Mobility Lab.
Size Doggo is 42 centimeters in length and 20 centimeters in width, and weighs less than five pounds. When developing engineers started from the availability of the components and relative simplicity of the Assembly robot.
Despite the fact that the robot is relatively cheap to produce, it is able to perform stunts no worse, and in some cases even better than its more expensive to gather. All thanks to the improved design of his ankle mechanisms and more efficient use of motors. Torque the last Doggo higher than in the same robot Minitaur from the Ghost Robotics (the cost is 11 $ 500), moreover, it is able to jump better than significantly more expensive in the production of the robot 3. from the Massachusetts Institute of technology.
Each leg of the machine consists of four main segments that are linked together. At the base of the feet have two motor, which through a reducing belt drive associated with a particular shaft for the articulation of the two upper elements of the feet. This architecture allows you to control the motion of the leg in any direction (within one plane). Furthermore, an additional advantage of this design is that it allows you to use motors as sensors of the load. Thanks to this the robot can do without the shock-absorbing elements. Strikes landing are mitigated by their active suppression engines.
After Assembly Doggo required controller firmware motors, as well as the Central microcontroller. To control the robot remotely by giving it a command for walking, jumping and other actions.
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