Bagaimana cara selfie stick mengambil gambar dari headphone jack?

Selfie stick

Ternyata begini caranya tombol capture pada selfie stick alias tongsis mengambil gambar:

iOS implements a feature to allow the user to take a photo by pressing the volume up/down button on the earphone remote. The selfie stick simply recreates this button press by shorting out pin 4 (microphone) and pin 3 (ground).

Penjelasan lengkapnya di sini.

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