School students build the world's smallest humanoid robot — 5.5 inches tall

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Measuring just 141 mm in height, the robot featured acrylic panels, and 3D-printed parts developed in-house at the school's robotics lab.

Four members of the robotics team at Diocesan Boys' School in Hong Kong have achieved an extraordinary engineering feat. They have successfully created the world's smallestStanding at a mere 141 mm in height, this robot is shorter than a standard ballpoint pen by 11.3 mm . The innovative team behind this creation includes students Aaron Ho Yat Fung, Isaac Zachary To, Justin Wang Tou Duong, and Ngo Hei Leung.

The journey commenced with the students employing computer-aided design to craft the blueprint of their diminutive marvel meticulously. Upon finalizing the technical specifications and necessary components, they enlisted the expertise of a factory to manufacture servo motors tailored to their requirements.

Subsequently, attention shifted to the assembly of the arms, with servos being utilized to enable articulation at the shoulders and elbows. Concurrently, the team tested the positioning of the battery and control board. Initially, their chosen battery unit proved insufficient for the robot's stature, prompting a substitution with a more compact 7.4V lithium-ion battery.

 

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