H3LIS331DL Accelerometer Breakout Hookup Guide
SFUptownMaker 
Hardware Overview
The H3LIS331DL breakout is fairly simple.
H3LIS331DL Sensor IC - This is the sensor IC. Its operating voltage only extends up to 3.6V, so to use it with a 5V Arduino or Arduino clone, you'll need some kind of voltage translation! It is perfectly centered on the PCB.
I2C Pull-up Resistors - The board includes pull-up resistor so you don't need to add them externally.
I2C Pull-up Resistor Isolation Jumper - If necessary, the I2C pull-up resistors can be removed from the circuit by removing the solder from this jumper.
SparkFun Standard I2C Header - Most boards which can be communicated to via I2C use this pinout, making it easy to stack them or connect them in a daisy chain.
SA0 Jumper - Closing this jumper changes the I2C address of the sensor from 0x19 to 0x18.
CS Jumper - Removing the solder from this jumper enables SPI mode. When the part's CS line is low at boot, it enables SPI mode.
SA0 Pin - When the chip is in SPI mode, this goes from being the address select pin to being the MISO pin.
CS Pin - Chip select for SPI mode. Unused in I2C mode.
Interrupt Pins - These pins are tied to interrupts that can be setup by the software library to trigger on various conditions.
