App note: Multiplexing Tri-Axis accelerometer outputs

App note from Kionix on reading multiple accelerometer by a single ADC using off the shelf chip or accelerometer built-in multiplexer. Link here (PDF) A Kionix tri-axis accelerometer with analog outputs provides three output voltages (Xout,Yout, Zout) which are proportional to the respective accelerations in those directions. However, with three analog outputs to digitize, it […]

Video: Multiplexed Wired Attack Surfaces

In this presentation from the recent Toorcon 15 in San Diego, CA, Michael Ossmann and Kyle Osborn detail their efforts in hacking cellphones via multiplexed USB signals. Manufacturers of mobile devices often multiplex several wired interfaces onto a single connector. Some of these interfaces, probably intended for test and development, are still enabled when the […]