This project showcases a 3D-printed robotic Minion equipped with an ultrasonic sensor, servo motors, and a DFPlayer Mini for interactive movement and sound. The Minion detects obstacles and adjusts its direction accordingly, while playing sound effects. Motion is controlled via two 360-degree servo motors, all managed through an Arduino microcontroller.
The 3D-printed body, made from PETG and PLA, provides a sturdy frame for component integration. The ultrasonic sensor enables obstacle detection, triggering directional changes and sound playback. The DFPlayer Mini is responsible for audio output, enhancing the interactive experience.
The Minion’s body was designed and 3D-printed using PETG and PLA materials, ensuring durability and proper housing for the electronics. Motion is achieved through two 360-degree servo motors, allowing it to move forward, turn, and react dynamically to its surroundings. The ultrasonic sensor detects obstacles and triggers corresponding movements, while the DFPlayer Mini plays preloaded sound effects, making the Minion more interactive and engaging.
During development, multiple iterations were required to refine the positioning of components and optimize the synchronization between motor movements and sound playback. Adjustments were also made to enhance the responsiveness of the ultrasonic sensor. The final implementation successfully combines robotics and interactive technology, offering a foundation for further improvements, such as AI-driven movement patterns, voice command integration, or wireless control through a mobile app.
