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I pulled off both the Arduino and the MPU9150. The Arduino worked fine stand alone. I put it on the tracker PCB and it also worked fine and programmed. When I put the 9150 on, it started failing again. I don't know if I can lift things again without starting to lose pads. My original order was 54841...

Thanks for the information although there are a few things that have a little me confused as to what the problem could be... The red LED between RX1 and GND flashes for 5-10 seconds I believe the LED you are referring to is the power LED. It's connected permanently across the 5V (VCC) supply and so...

Hi - I just built a headtracker (HCKITS0021-HCKITS0021C) with the EDTracker rev 2.0 board. The red LED between RX1 and GND flashes for 5-10 seconds when I connect a USB cable (multiple tried). VCC->GNDreads ~1.24V to all three grounds. RAW->GND reads 1.7V. With drivers installed, I don't see anythin...