In our Dev Phone 1 excitement last week, we somehow overlooked phoneWreck’s teardown of the T-Mobile G1. The complex slider mechanism is certainly worth looking out. One of the major oddities they point out is the inclusion of two vibration motors. One is mounted next to the SIM on the mainboard. While the other is mounted in the frame next to the earpiece. We wonder what was gained/solved by using two. The phone also includes a digital compass module. We’d like a more detailed explanation of how the Xilinx CPLD is used. From this article in 2006, it seems HTC uses them to generate custom clock signals and switching off devices for power management.

surprised about the compass. those can be pretty expensive. neat article.

From my experience with compasses they do not work very well inside buildings… or just my engineering building…

Why two? How about realigning the resulting vibration as the sum of the two vibration vectors, preserving the integrity of the device.

goood

very much

good ? How about realigning the resulting vibration as the sum of the two vibration vectors, preserving the integrity of the device

? How about realigning the resulting vibration as the sum of the two vibration vectors, preserving the integrity of the device

How about realigning the resulting vibration as the sum of the two vibration vectors, preserving the integrity of the device

? How about realigning the resulting vibration as the sum of the two

how realigning sum…what???!!

realigning the resulting vibration as the sum of the two vibration vectors, preserving the integrity of the device