JoBo: Our FLL Robot

This robot is based on the DroidBot M design and focuses heavily on flexibility, accessibility, and precision. It features a modular fixture system, allowing attachments to be swapped quickly and easily depending on the task, which makes the overall design adaptable and future-proof. The build supports multiple types of sensors, even though none were used in this specific configuration, leaving plenty of room for expansion later on. The SPIKE Prime hub is conveniently mounted on the top of the robot, making it easy to access buttons, ports, and the screen without disassembling anything, which is a huge win for usability during testing and debugging. For movement accuracy, the robot uses a LEGO Technic edge belt wheel, helping improve precision and consistency, especially during controlled maneuvers. Power-wise, the robot is equipped with two drive motors for movement and two additional motors for attachments, all controlled through the SPIKE Prime hub, resulting in a clean, efficient, and well-balanced setup that’s both reliable and easy to work with.

This robot is split up into a front, middle, and back, similar to the anatomy of an insect. In it’s front, it has a gear to it’s left that’s facing up, so that fixtures can easily slide in and connect to the main motor, just underneath it. Above the middle of the motor is a square, connected to the face and the middle of the robot, securely locking the motor in place. The face of the robot is a few layers of beams, to provide a smooth front, and protection of the motor. The front block is the same size as a large square piece which is hollow, which is an 11 x 7 stud Technic piece. On the sides of the front are two white wheels without tires that prevent gripping the board when turning, and can allow sliding. It all connects to the middle of the robot, where the SPIKE Prime Hub is, facing its interface up, allowing for an easier view of the challenge numbers, and easier access to the buttons. On the sides of the Hub are beams overlaying the motors sticking out that connect to the large wheels. They are in blue tires to provide grip when turning, and are perfectly symmetrical to each other on different sides. Just connecting to the middle is the back, which is a flipped mirror of the front, with the gear on the right side.

If you are interested in reusing our Robot, please refer to the Photos and 3D Model of the Robot page.