Home Technology This Tool Lets You Make Your Own Robot ‘Puppy’

This Tool Lets You Make Your Own Robot ‘Puppy’

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Scientists have created a new interactive design tool that makes it possible for novices and experts to create custom robots with 3D-printed parts and consumer-level actuators.

Using a familiar drag-and-drop interface, individuals can choose from a library of components and place them into the design. The tool suggests components that compatible with each other, offers potential placements of actuators, and can automatically generate structural components to connect those actuators.

Once the design is complete, the tool provides a physical simulation environment to test the robot before fabricating it, enabling users to iteratively adjust the design to achieve a desired look or motion.

“The process of creating new robotic systems today is notoriously challenging, time-consuming and resource-intensive,” says Stelian Coros, assistant professor of robotics at Carnegie Mellon University. “In the not-so-distant future, however, robots will be part of the fabric of daily life and more people—not just roboticists—will want to customize robots. This type of interactive design tool would make this possible for just about anybody.”

Coros’ team designed a number of robots with the tool and verified its feasibility by fabricating two—a wheeled robot with a manipulator arm that can hold a pen for drawing, and a four-legged “puppy” robot that can walk forward or sideways.

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“The system makes it easy to experiment with different body proportions and motor configurations, and see how these decisions affect the robot’s ability to do certain tasks,” says Ruta Desai, a doctoral student in robotics who helped developed the tool with Coros.

“For instance, we discovered in simulation that some of our preliminary designs for the puppy enabled it to only walk forward, not sideways. We corrected that for the final design. The motions of the robot we actually built matched the desired motion we demonstrated in simulation very well,” she adds.

The research team developed models of how actuators, off-the-shelf brackets, and 3D-printable structural components can be combined to form complex robotic systems. The iterative design process enables users to experiment by changing the number and location of actuators and to adjust the physical dimensions of the robot.

The tool includes an auto-completion feature that allows it to automatically generate assemblies of components by searching through possible arrangements.

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“Our work aims to make robotics more accessible to casual users,” Coros says. “This is important because people who play an active role in creating robotic devices for their own use are more likely to have positive feelings and higher quality interactions with them. This could accelerate the adoption of robots in everyday life.”

Desai will present a report on the design tool at the IEEE International Conference on Robotics and Automation (ICRA 2017) in Singapore. The National Science Foundation supported this research.

Source: Carnegie Mellon University

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