ADXL345 Tilt Sensor Accelerometer Module for Arduino Projects

Easy to use Analogue Accelerometer

This Accelerometer module is based on the popular Freescale MMA7361 three-axis analog accelerometer IC which reads off the X, Y and Z acceleration as analog voltages. The accelerometer is very easy interface to an Arduino Microcontroller using 3 analog input pins, and can be used with most other microcontrollers, such as the PIC or AVR. 
This module comes complete with 0.1" pitch pin headers soldered on, so it fits directly into a breadboard or prototype shield. This module's onboard voltage regulator allows for convenient operation at either 3.3 volts or 5 volts - a feature not found on the competitor's modules. No additional external components are required for operation.

Features:

• 2x5 pin 0.1" pitch pin headers
• Two sensitivity modes ±1.5G and ±6G
• 5VDC & 3.3VDC operation
• 0G detect pin (for linear Free-Fall detection)
• Sleep Mode to save on power
• Integrated 1 pole low pass filter
• Temperature Compensation
• Self Test Mode for easy troubleshooting

Applications:

3D Gaming: Tilt and Motion Sensing, Event Recorder
HDD MP3 Player: Freefall Detection
Laptop PC: Freefall Detection, Anti-Theft
Cell Phone: Image Stability, Text Scroll, Motion Dialing, E-Compass
Pedometer: Motion Sensing / PDA: Text Scroll
Navigation and Dead Reckoning: E-Compass Tilt Compensation
Robotics: Motion Sensing

Sample Sketch

int x; // x axis variable
int y; // y axis variable
int z; // z axis variable
void setup()
{ 
   Serial.begin(9600); // opens serial port, sets data rate to 9600 bps
}
void loop()
{
  x = analogRead(5); // read A5 input pin
  y = analogRead(4); // read A4 input pin
  z = analogRead(3); // read A3 input pin
  Serial.print("X = "); // print x adc value
  Serial.println(x);
  Serial.print("Y = "); // print y adc value
  Serial.println(y);
  Serial.print("Z = "); // print z adc value
  Serial.println(z);
  delay(100);
}