SunFounder Digital Accelerometer ADXL345 Module for Arduino and Raspberry Pi The ADXL345 is a small, thin, low power, three-axis accelerometer with high resolution (13-bit) measurement up to 16 g. Digital output data is formatted as 16-bit twos complement and is accessible through either an SPI (3- or 4-wire) or I2C digital interface Flexible interrupt modes  Any interrupt mappable to either interrupt pin 32 level output data FIFO minimizes the load of the host processor Measurement ranges selectable and bandwidth selectable via serial command Working voltage: 3.3v-5v; PCB size: 1.3 x 2.3 cm