Problem with Arduino UNO + Sparkfun ADXL362

Hi all, I'm trying to implement the Arduino UNO with the Sparkfun ADXL362 Accelerometer. I followed this tutorial: http://ez.analog.com/docs/DOC-2222 and installed the proper library: http://annem.github.io/ADXL362/

But the reading in the serial monitor are all the time zero:

XDATA = 0 YDATA = 0 ZDATA = 0 Temperature = 0 XDATA = 0 YDATA = 0 ZDATA = 0 Temperature = 0 XDATA = 0 YDATA = 0 ZDATA = 0 Temperature = 0 etc....

Every connection is double checked. Can anyone give some clue on what could be wrong?

Thanks a lot!

This Sparkfun breakout board ? https://www.sparkfun.com/products/11446

That is a 3.3V sensor, and the Arduino Uno is a 5V board. How did you connect that ?

Arduino UNO has both, 5v and 3.3v I guess:

5V.This pin outputs a regulated 5V from the regulator on the board. The board can be supplied with power either from the DC power jack (7 - 12V), the USB connector (5V), or the VIN pin of the board (7-12V). Supplying voltage via the 5V or 3.3V pins bypasses the regulator, and can damage your board. We don't advise it. 3V3. A 3.3 volt supply generated by the on-board regulator. Maximum current draw is 50 mA.

or am I misreading it?

You should power that sensor board (Sparkfun accelerometer breakout board) with the 3.3V output of the Arduino Uno. But how did you connect the 5V SPI signals from the Arduino Uno to the 3.3V SPI signals of the sensor board ? The sensor might be damaged by now.