Technical notes
Sensor placement
An IMU observes movement at its mounting point. Position and orientation therefore affect the signal being examined, which is an important consideration when relating motion to breathing.
Acquisition and review
I2C and UART support acquisition and data review, with the communication path kept distinct from the motion signal.
Measurement limits
The project concerns motion observation and analysis. Understanding that signal is a different task from establishing medical accuracy or diagnosing a condition; this work is an engineering exploration of movement.