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.

Over 200 University of Central Florida students admitted to cheating on a midterm exam after their professor figured out at least a third of his class had cheated. In a lecture posted on YouTube, Professor Richard Quinn told the students that he had done a statistical analysis of the grades and was using other methods to identify the cheats, but instead of turning the list over to the university authorities he offered the following deal: "I don't want to have to explain to your parents why you didn't graduate, so I went to the Dean and I made a deal. The deal is you can either wait it out and hope that we don't identify you, or you can identify yourself to your lab instructor and you can complete the rest of the course and the grade you get in the course is the grade you earned in the course."