Saving Accelerometer data to SD card via SPI interface

Using Arduino Storage
4 
i connect
vcc(sd) -> 5V
vcc(accelermeter) -> 3.3V
mosi(sd、accelermeter) -> d11(mosi)
miso(sd、accelermeter) -> d12(miso)
sclk(sd、accelermeter) -> d13(sclk)
gnd(sd、accelermeter) -> gnd

not seeing CS, Chip Select. most people use pin 10, but any digital pin will work.

set (pinMode(CS, OUTPUT); and digitalWrite(CS, LOW); to interact with the card. set digitalWrite(CS, HIGH); when you are at "mischief managed"