Apple Pencil 拆解

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Taking a nosedive into the Pencil, we start at the nib, which comes off quietly with a few quick twists.
A peek inside reveals a tiny metal bit sunk deeply into the tip, presumably to get as close to the screen as possible.
This likely connects to one of the two emitters in the tip that allow the iPad Pro to determine the Pencil's angle and orientation relative to the display, and adjust the pen stroke accordingly.
The digitizer on an iPad Pro should be able to determine the distance from each emitter to the screen—and from that calculate the angle of the Pencil relative to the iPad.

	[* black] Taking a nosedive into the Pencil, we start at the nib, which comes off quietly with a few quick twists.
	[* black] A peek inside reveals a tiny metal bit sunk deeply into the tip, presumably to get as close to the screen as possible.
-	[* icon_note] This likely connects to one of the two ~~[https://youtu.be/iicnVez5U7M?t=72\|~~emitters~~\|new_window=true]~~ in the tip that allow the iPad Pro to determine the Pencil's angle and orientation relative to the display, and adjust the pen stroke accordingly.
+	[* icon_note] This likely connects to one of the two emitters in the tip that allow the iPad Pro to determine the Pencil's angle and orientation relative to the display, and adjust the pen stroke accordingly.
	[* black] The digitizer on an iPad Pro should be able to determine the distance from each emitter to the screen—and from that calculate the angle of the Pencil relative to the iPad.

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