I have another question if I can make it here... 
What is the difference between this http://www.robot-italy.com/it/triple-axis-accelerometer-breakout-adxl335.html accelerometer and these 4 http://www.digikey.it/product-search/it/sensors-transducers/accelerometers/1966355?k=ADXL335&stock=1&pbfree=1&rohs=1? I would like to buy it from the digikey store (the second one), but I can't see images and I can't decrypt the datasheets. Could you tell me what is the equivalent of the 1st accelerometer in the digikey store? Thanks a lot!!
Jymmy097