🎯 Sensor Calibration Laboratory
Zero out mechanical tilt biases, hard-iron magnetic distortion, ambient noise floors, and barometric elevation baselines before launching applications.
Place board flat and motionless on table. Samples 100 frames to nullify zero-rate gyro drift and align gravity vector exactly to 1.000g.
Slowly rotate the board in a 3D figure-8 to sample spherical field envelopes. Extracts hard-iron PCB offsets $[V_x, V_y, V_z]$ and soft-iron scales.
Remain quiet for 3 seconds. Measures room acoustic noise floor mean ($\mu$) and standard deviation ($\sigma$) to dynamically establish the tap and voice threshold.
Establishes local reference atmospheric pressure ($P_0$) so subsequent room piston air displacements are measured relative to true $\Delta P = 0.00\text{ Pa}$.
Ensure no hand or object is directly above the sensor. Calibrates clear-air ambient photon reflection baseline and dark-current ambient subtraction.
Ensures still air with no breeze. Measures the natural steady-state CPU self-heating differential ($\Delta T_0 = T_{\text{die}} - T_{\text{ambient}}$) under active load.
11 Breakthrough First-Principles Applications
Now that your sensors are calibrated, all algorithms calculate from true physical baselines. Explore each application via direct USB hardware or the interactive multi-physics sandbox.