*01.00* About Welcome to quaternion.cafe! A portal into the world of sensor fusion with quaternions. This vim-inspired tutorial has interactive code editors and 3D visualizations scattered throughout. The content is centered around fusing and integrating a gyroscope with an accelerometer, and explains (with code) how to accomplish this task. All the visualization use real datasets from an actual IMU to illustrate some of the concepts. I spent the last 5 years making this IMU-based telescope acce...