2023-04-10 (M) GrinderCompass First functioning haptic compass

I revised the central spinner to be shorter and expose the magnets, and then I drafted a peculiar-looking bracket to suspend a brass machine screw over the bare magnets. I drew it with many flexures to encourage a bouncing motion. Cutting was difficult, and the product was so fragile that I broke the first one during extraction. The rest survived but took a long time to free with a steady hand and scalpel. The design was too rigid to allow much tapping, but in the picture, you can see where a brass screw's head rests gently on the exposed magnets. If I swing the compass so the case points between east and west, I can feel and hear the screw and spinner colliding! The device is technically a haptic compass, but I want to increase the feedback sensation.
Brass screw held by spring

The rest of the posts for this project have been arranged by date.
First time here?

Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8

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