The MMA8452Q is a tiny and low-power three-axis accelerometer. This library implements a simple interface to access most of the accelerometer functionality from an Arduino.

• Normal and fast raw axes values reading
• Scale configuration (allowed 2g, 4g and 8g scales)
• Custom offset calibration
• Low noise mode
• Orientation detection (portrait/landscape and back/front)
• Auto-WAKE/SLEEP mode and detection

#include <MMA8452Q.h>
#include <Wire.h> /* so the Arduino IDE auto-detects the dependency */

MMA8452Q accel;

int axes[3];

void setup() {
  Serial.begin(9600);

  if (accel.begin())
    while (1); /* error */
}

void loop() {
  /* get and print raw axes values */
  accel.axes(axes);

  Serial.print("x: ");
  Serial.print(axes[0]);
  Serial.print(", y: ");
  Serial.print(axes[1]);
  Serial.print(", z: ");
  Serial.println(axes[2]);

  delay(1000);
}

See the API reference for more information.

• Motion and freefall detection
• Single and double tap detection
• Interrupts configuration

The only dependency is the standard Wire Arduino library.

Just clone the repository into your user libraries directory.

For more info, have a look at the Arduino guide page.

Copyright (C) 2013 Alessandro Ghedini <[email protected]>

See COPYING for the license.