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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.
| [* black] To read the turning of the bezel, the Galaxy Watch uses a different approach than the [guide|113044|optical encoder of the Apple Watch|stepid=216189|new_window=true]. | |
| - | [* black] There are three [https://en.wikipedia.org/wiki/Hall_effect_sensor|hall sensors|new_window=true] on the small PCB, at the same distance from each other as the grooves on the bezel. |
| + | [* black] There are three [https://en.wikipedia.org/wiki/Hall_effect_sensor|hall sensors|new_window=true] (Seiko Instruments) on the small PCB, at the same distance from each other as the grooves on the bezel. |
| [* black] And every third groove has a small magnet inside. | |
| [* black] 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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