A spatial augmented reality based circuit experiment and comparative study with the conventional one

How to intuitively illustrate phenomena while retaining good operation experiences is a key issue in experimental learning. Virtual experiments with desktop environments, handheld devices, or headsets can show invisible phenomena for students. However, they are either visuo‐tactile inconsistent in space or with heavy physical burdens, causing bad experiences. A spatial augmented reality (SAR) based circuit experiment is developed. It allows students to interact with 3D (three dimensional) printed tangible objects without wearing any devices, having low physical burdens. Objects' poses are tracked using Microsoft Azure Kinect and inertial measurement unit. Virtual phenomena are projected onto the tangible objects and tabletop accordingly. Physical input and virtual output space are completely fused from students' view. It also offers efficient operation manners to students. A questionnaire comparing user experiences between the SAR and conventional experiment reveals that the former has a better learning experience. A spatial augmented reality (SAR) based circuit experiment is proposed. It allows students to interact with 3D (three dimensional) printed tangible objects without wearing any devices, having low physical burdens. Physical input and virtual output space are completely fused from students' view. A questionnaire comparing user experiences between the SAR and the conventional experiment revealed that the former has a better learning experience.