No compass/heading (magnetometer). Angles are tracked with gyroscope + gravity; re-zero anytime to remove drift.
Choose mode
Pick Wheel on the wheel phone (it will show a QR to pair the steering phone).
Idle
Requires HTTPS (or localhost). iOS Safari needs permission via a button tap.
WS Base URL
Kingpin / Main Axis Angle (relative)
--°
Fix the phone to the wheel/knuckle. Calibrate the steering (kingpin) axis by wiggling, then this shows the angle about that axis.
Tip: These buttons can be remote controlled from the Steering Wheel phone once paired.
Pair steering phone
Scan this QR on the steering phone to open the site already paired as Steering Wheel.
Pair URL
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Axis tilt from vertical
--°
Axis (device frame)
--
Device pose (3D phone in world cube)
Steps: (1) Wheels straight → Set Straight. (2) Calibrate Axis → wiggle left/right for 2–3s → Finish.
Angle is gyroscope-tracked; re-zero anytime to remove drift.
Steering Wheel Angle (relative)
--°
Angle about the calibrated steering wheel axis.
Axis tilt from vertical
--°
Axis (device frame)
--
Wheel angle (from wheel phone)
--°
Steps: (1) Wheels straight → Set Straight. (2) Calibrate Axis → wiggle left/right for 2–3s → Finish.
The angle is tracked by the gyroscope; re-zero anytime to remove drift.