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BangleApps/apps/magnav
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Anton 2a10df7f45 Bump app versions 2024-03-04 22:32:06 +01:00
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ChangeLog Bump app versions 2024-03-04 22:32:06 +01:00
README.md add screenshot and update readme 2021-11-20 10:45:21 +00:00
lib.js magnav: Outsource tilt compensation to library 2023-01-22 10:10:29 +01:00
magnav-icon.js Add files via upload 2020-06-09 12:08:14 +01:00
magnav.png Add files via upload 2020-06-09 12:08:14 +01:00
magnav_b1.js Fix no-unused-vars in existing apps 2024-03-04 21:34:50 +01:00
magnav_b2.js Fix no-unused-vars in existing apps 2024-03-04 21:34:50 +01:00
metadata.json Bump app versions 2024-03-04 22:32:06 +01:00
screenshot-b2.png add screenshot and update readme 2021-11-20 10:45:21 +00:00
screenshot-light-b2.png rename 2021-11-20 11:00:10 +00:00
screenshot.jpg Add files via upload 2020-06-09 12:08:14 +01:00
tilt.js Fix magnav font size 2020-12-09 15:10:06 +00:00

README.md

Navigation Compass

This is a tilt and roll compensated compass with a linear display. The compass will display the same direction that it shows when flat as when it is tilted (rotation around the W-S axis) or rolled (rotation around the N-S) axis. Even with compensation, it would be beyond foolish to rely solely on this app for any serious navigational purpose.

Calibration

Correct operation of this app depends critically on calibration. When first run on a Bangle, the app will request calibration. This lasts for 20 seconds during which you should move the watch slowly through figures of 8. It is important that during calibration the watch is fully rotated around each of it axes. If the app does give the correct direction heading or is not stable with respect to tilt and roll - redo the calibration by pressing BTN2. Calibration data is recorded in a storage file named magnav.json.

Note: Charging your Bangle due to the magnetic connector clamp seems to require recalibration afterwards for accurate readings.

Controls

BTN1 - marks the current heading with a blue circle - see screen shot. This can be used to take a bearing and then follow it.. (Swipe UP on Bangle 2)

BTN2 - invokes calibration ( can be cancelled if pressed accidentally). (BTN1 on Bangle 2)

BTN3 - cancels the marker (blue circle not displayed) (swipe DOWN on Bangle 2)

Support

Please report bugs etc. by raising an issue here.