Stap 15 vertalen
Stap 15
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To read the turning of the bezel, the Galaxy Watch uses a different approach than the optical encoder of the Apple Watch.
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There are three hall sensors (Seiko Instruments) on the small PCB, at the same distance from each other as the grooves on the bezel.
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And every third groove has a small magnet inside.
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When the bezel is turned, two of the three sensors read a change in their magnetic field (either on/off or off/on). The third sensor does not read a change. With this method, it can be clearly determined in which direction the bezel is rotated.
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