How does an optical mouse’s sensor know you’re moving it a certain direction?
In: 5
This sensor is a camera that takes pictures with amazing speed. If you take picture A and then picture B after 0.01 sec and compare them, they’ll have some common part. This part’s offset will be equal to the mouse offset.
Imagine a flipbook with the same shape on every page, but on different positions. You can tell that the shape is moving and determine direction by looking at static pictures.
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