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Prying Eyes: Dissecting Google Glass

16 Jul 2013  | Scott Torborg, Star Simpson

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Behind-ear module

To keep the unit's weight distributed more evenly, Glass keeps its battery in a rounded bit behind the wearer's ear. We stripped this area open, again applying destructive force to tear the plastic.

The single-cell Lithium Polymer battery sits at the end of the flexprint PCB and is marked as having a capacity of 2.1Wh (roughly 570mAh). It is not user-replaceable, not even a little bit.

Google Glass behind the ear module


Just forward of the battery pod is a bone conduction speaker, which seems to double as a tactile switch.

Google Glass speaker

Display assembly

Another flex PCB, this one much more intricate, connects the main logic board to an assembly containing the display, camera, and some other sensors. It wraps around and through the frame holding those components. We gently pulled it off its connectors and extricated it.

Google Glass display assembly

Among other things, the flexprint PCB holds Glass' inertial sensor, an InvenSense MPU-9150.

Google Glass flexprint PCB

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