Head tracker release notes

Firmware images

image-0.07 (2019-08-23)

  • experimental build of a work-in-progress.
  • completely rewritten processing pipeline: fixes wander caused by complex head movements.
  • new magnetometer calibration required.
  • a few known issues to be fixed and features to be documented.

image-0.06 (2019-07-09)

  • suppresses the first two samples of data from each sensor, as it’s always bad data.
  • upped gyroscope activity threshold to attempt to fix drift seen in unit 03W.
  • output is now in the range 0..2π for yaw, pitch, and roll.

image-0.05 (2019-06-25)

  • tightened up filters to improve responsiveness.
  • changed internal calculation of pitch and roll orientation.
  • further magnetometer performance improvements.
  • vestiges of 6DOF pipeline used to tighten up accelerometer data.

image-0.04 (2019-06-13)

  • improved the magnetometer and gyroscope logic by making angular compensation work a little better.
  • improved handling of magnetometer on/off toggling.
  • bug fix: gyroscope drift correction (it now works in both directions).

image-0.03 (2019-06-12)

  • bug fix: Holds off sending output and zeros head tracker first, to prevent erratic behaviour.

image-0.02 (2019-06-10)

  • first release.

Supperware Firmware Tool

sft-1.00 (2019-06-20)

  • first release.