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June 22, 2021 01:25 am

Engineer Builds Self-Balancing Autonomous Bicycle In Spare Time

Hardware engineer Zhi Hui Jun built a bicycle that avoids obstacles and self-balances. Interesting Engineering reports: The engineer, who worked on the bicycle project in his spare time over the course of four months, crafted a self-balancing bicycle using an accelerometer and gyroscope sensors that allow the bike's front wheel to compensate and quickly change direction if it's going to fall. The system generates just the right amount of angular momentum in the right direction to stop the bike from falling. Impressively, the bike's motion, as seen in Zhi Jui Jun's video is actually quite smooth, and it doesn't look like it provides the janky ride we expected on first hearing about the project -- the almost imperceptible changes made to the bike's balance make it feel like it's being ridden by a ghost. For the obstacle detection and avoidance system, Zhi Hui Jin designed an automatic control system -- that uses a customized perception and control algorithm -- that he linked to the sensors and a chip. Zhi Hui Jun used 3D printing and machine tool processing to craft some of the required parts for his bicycle. As well as the accelerometer and gyroscope, the bicycle is equipped with two brushless motors and a steering gear, as well as an RGBD depth camera, and a LiDAR sensor -- as used by driverless cars to detect their surroundings. The bicycle also uses 6S model power lithium battery, which has approximately three hours of battery life.

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