2023-03-28 (Tu) GrinderCompass First sketch

Ages ago, I tried to build a haptic compass without electronics, but I failed. I had another idea. The concept is that I make a compass from a couple of stacks of disc magnets spinning on a platform. The platform should always face north, and I will attach a pendulum to one side. I will place a "drum" on one side of the case so that when the case faces north, the pendulum can cause reverberations.

I designed the apparatus to be large enough to make pieces with my laser cutter, and if it works, I can worry about miniaturizing. There are two arrow-shaped units with a hole in the center and rectangles on the sides. The intention is to run a non-ferrous bolt through the holes and use the pieces to clamp the magnet stacks. I added hex shapes to insert brass nuts to balance the unit. The wrench-shaped parts are my pendulum, which I will fasten together with a gap in the center and add a brass hex nut to the end where it can strike the drum.
Compass spinner and pendulum

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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